CN208060982U - A kind of switching value output circuit - Google Patents
A kind of switching value output circuit Download PDFInfo
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- CN208060982U CN208060982U CN201820423425.7U CN201820423425U CN208060982U CN 208060982 U CN208060982 U CN 208060982U CN 201820423425 U CN201820423425 U CN 201820423425U CN 208060982 U CN208060982 U CN 208060982U
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Abstract
The utility model discloses a kind of switching value output circuits, including：Control unit, described control unit includes first input end, the second input terminal, the first output end and second output terminal, for being connected with host computer to receive the drive signal from host computer, control unit is used to export control signal from first output end and second output terminal according to the drive signal for the first input end and the second input terminal；And output unit, it is connected with the first output end and second output terminal of control unit, the control signal for being exported according to control unit corresponds to output high level or low level.The utility model switching value output circuit can export high level but also export low level, meets the needs of different clients, the demand that different clients need not be directed to again is customized exploitation, the compatibility and adaptability for improving the switching value output circuit avoid low production efficiency and the higher problem of cost caused by due to using two sets of circuits of toggle switch circuit or design.
Description
Technical field
The utility model is related to digital output modul fields, relate more specifically to a kind of switching value output circuit.
Background technology
Currently, all electronic products are almost required for switching value output circuit module, general output switch parameter in the market
Circuit module can only export high level effectively or output low level is effective, may need switching value output circuit in face of some clients
Module output high level is effective, and some clients may need switching value output circuit module to export the effective demand of low level,
The switching for usually carrying out low and high level by designing two sets of circuits of toggle switch circuit or design in the prior art, so that the switch
Amount output circuit module can not only export high level effectively and can to export low level effective, without producing more moneys switches
Output circuit module is measured to cope with the demand of different clients, improves the compatibility of the switching value output circuit module.However, when adopting
When realizing that switching value output circuit module output low and high level is effective, Manufacturing Worker is needed to adjust dial-up manually with toggle switch
Switch, troublesome in poeration, production efficiency is relatively low, especially when Manufacturing Worker forgets to adjust toggle switch, is easy to cause product and returns
Work, meanwhile, it needs Manufacturing Worker to stare at operation progress often, substantially increases cost of labor.When by design two sets of circuits come
When realizing that switching value output circuit module output low and high level is effective, two sets of circuits of design can greatly increase output switch parameter electricity
The component of road module greatly improves so as to cause its production cost, while the circuit for also be easy to causeing the module is chaotic, may
It will appear the serious consequences such as connection error.
Therefore, how to design and switching value output circuit a kind of simple in structure and can exporting low and high level is provided, so that its
The actual demand that different clients can be met, the demand without being directed to different clients again are customized exploitation, can improve institute
The compatibility and adaptability for stating switching value output circuit avoid caused by due to using two sets of circuits of toggle switch and design
Low production efficiency and the higher problem of production cost are those skilled in the art's technical problems urgently to be resolved hurrily.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of switching value output circuits, can meet different clients
Actual demand while, improve the compatibility and adaptability of the switching value output circuit, avoid because using toggle switch
And design two sets of circuits and caused by low production efficiency and the higher problem of production cost.
In order to solve the above-mentioned technical problem, the utility model provides a kind of switching value output circuit, including：Control unit,
Described control unit includes first input end, the second input terminal, the first output end and second output terminal, the first input end and
For being connected with host computer to receive the drive signal from host computer, described control unit is used for according to second input terminal
Drive signal exports control signal from first output end and second output terminal；And output unit, it is single with the control
First output end of member is connected with second output terminal, and it is high that the control signal for being exported according to described control unit corresponds to output
Level or low level.
In switching value output circuit provided by the utility model, the output unit includes the first output unit and the
The control terminal of two output units, first output unit is connected with the second output terminal, input termination power end, defeated
Outlet is connected defeated using the output end as the switching value output circuit, described first with the input terminal of second output unit
Go out unit for exporting high level when receiving the control signal exported in the second output terminal；Second output unit
Control terminal be connected with first output end, output end ground connection, second output unit is used for when receiving described the
Low level is exported when the control signal exported in one output end.
In switching value output circuit provided by the utility model, first output unit include first switch pipe and
First resistor, a termination power end of the first resistor, the other end are connected with the control terminal of the first switch pipe to make
For the control terminal of first output unit, the input of the input terminal of the first switch pipe as first output unit
End, output end of the output end as first output unit；Second output unit includes second switch pipe and
Two resistance, one end ground connection of the second resistance, the other end are connected with the control terminal of the second switch pipe using as described
The control terminal of second output unit, the input terminal of the input terminal of the second switch pipe as second output unit are defeated
Output end of the outlet as second output unit.
In switching value output circuit provided by the utility model, described control unit includes a light-coupled isolation unit, institute
Drive signal output control signal of the light-coupled isolation unit for being inputted with the first input end according to power end is stated to control
The second output unit conducting is made, the switching value output circuit exports low level when second output unit is connected；
And the drive signal output control signal inputted according to the first input end and second input terminal is to control
The conducting of the first output unit is stated, the switching value output circuit exports high level when first output unit is connected.
In switching value output circuit provided by the utility model, the light-coupled isolation unit includes an opto-coupler chip, institute
It includes multiple two-way optocouplers to state opto-coupler chip, wherein an input pin of the first two-way optocoupler connects power end, another input pin
It is connected with the first input end, the input terminal phase of an output pin of the first two-way optocoupler and first output unit
Even, another output pin is connected to the control terminal of second output unit as first output end；Second two-way optocoupler
An input pin be connected with the first input end, another input pin is connected with second input terminal, this is second two-way
One output pin of optocoupler is connected to the control terminal of first output unit, another output pin as the second output terminal
It is connected with the output end of second output unit.
In switching value output circuit provided by the utility model, the light-coupled isolation unit further includes a diode, institute
The anode for stating diode is connected with the first input end, and cathode is connected with an input pin of the described second two-way optocoupler,
The diode is for preventing the described first two-way optocoupler and the second two-way optocoupler from simultaneously turning on.
In switching value output circuit provided by the utility model, described control unit includes the first control unit and the
Two control units, first control unit are used to receive the drive signal inputted from the first input end, and according to institute
The drive signal for stating first input end input exports control signal to control the second output list from first output end
Member conducting, when second output unit is connected, the switching value output circuit exports low level；Second control unit
For receiving the drive signal inputted from second input terminal, and according to the drive signal of second input terminal input from
Output control signal is connected with controlling first output unit in the second output terminal, when first output unit is connected
Shi Suoshu switching value output circuits export high level.
In switching value output circuit provided by the utility model, first control unit include the first triode and
The control terminal of second triode, first triode is connected with the first input end, input terminal and the two or three pole
The control terminal of pipe is connected and is connected to power end, output end ground connection, the input terminal of second triode and described first defeated
Go out unit input terminal be connected, output end as first output end be connected to the control terminal of second output unit with
Export the control signal；Second control unit includes third transistor and the 4th triode, the third transistor
Control terminal be connected with second input terminal, input terminal is connected with the control terminal of the 4th triode and is connected to power supply
The input terminal at end, output end ground connection, the 4th triode is connected to the first output list as the second output terminal
To export the control signal, output end is connected the control terminal of member with the output end of second output unit.
In switching value output circuit provided by the utility model, described control unit includes a driving unit and a choosing
Unit is selected, the driving unit is used to receive the drive signal inputted from the first input end, and defeated according to described first
The drive signal for entering end input drives the selecting unit；The selecting unit is inputted for receiving from second input terminal
Drive signal, and first output unit is connected according to the drive signal selection of second input terminal input or selection connects
Connect second output unit.
In switching value output circuit provided by the utility model, the driving unit includes the 5th triode, and described the
The control terminal of five triodes is connected with the first input end, and input terminal is connected and connect with the input terminal of the selecting unit
To power end, output end ground connection；The selecting unit is driven when the first input end input low level drive signal；Institute
It includes switcher chip to state selecting unit, and the selection end of the switcher chip is connected with second input terminal, one
Output end is connected to first output unit as second output terminal, and another output end is connected to institute as the first output end
State the second output unit；When the second input terminal input low level drive signal, the input terminal of the switcher chip
It is connect with the second output terminal and exports the control signal；When the second input terminal input high level drive signal,
The input terminal of the switcher chip connect with first output end and exports the control signal.
Compared with prior art, a kind of switching value output circuit provided by the utility model by design a control unit with
And an output unit, described control unit can export control signal according to the drive signal, the output unit can root
The control signal control output high level or output low level exported according to described control unit, to meet the reality of different clients
Border demand, the demand that need not be directed to different clients again are customized exploitation, improve the compatibility of the switching value output circuit
Property and adaptability, solve because using toggle switch or design two sets of circuits due to caused by low production efficiency and production cost
Higher problem.
By description below and in conjunction with attached drawing, the utility model will become more fully apparent, these attached drawings are for explaining this
The embodiment of utility model.
Description of the drawings
Fig. 1 is a kind of structure diagram of switching value output circuit provided by the utility model；
Fig. 2 is a kind of frame principle figure of the first embodiment of switching value output circuit provided by the utility model；
Fig. 3 is a kind of physical circuit figure of the first embodiment of switching value output circuit provided by the utility model；
Fig. 4 is a kind of frame principle figure of the second embodiment of switching value output circuit provided by the utility model；
Fig. 5 is a kind of physical circuit figure of the second embodiment of switching value output circuit provided by the utility model；
Fig. 6 is a kind of frame principle figure of the 3rd embodiment of switching value output circuit provided by the utility model；
Fig. 7 is a kind of physical circuit figure of the 3rd embodiment of switching value output circuit provided by the utility model.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground describes, and similar reference numerals represent similar component in attached drawing.Obviously, will be described below embodiment is only this practicality
Novel a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without creative efforts belongs to the model of the utility model protection
It encloses.
It should be appreciated that ought use in this specification and in the appended claims, term " comprising " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded
Body, step, operation, element, component and/or its presence or addition gathered.
It is also understood that herein term as used in this specification merely for the sake of description specific embodiment purpose and
It is not intended to limit the present invention.As description of the invention and it is used in the attached claims, unless context
Other situations are clearly indicated, otherwise " one " of singulative, "one" and "the" are intended to include plural form.
It will be further appreciated that the term "and/or" used in this specification and in the appended claims refers to phase
Any combinations and all possible combinations of one or more of item listed are associated with, and include these combinations.
A kind of switching value output circuit 100 provided by the utility model is used to transmit the drive signal exported from host computer
Control signal is exported to control unit, and according to the drive signal, the output unit is received to be exported from control unit
Control signal after according to the control signal export high level or output low level.The switching value output circuit 100 includes one
Control unit 11 and an output unit 12, described control unit are used for defeated from the first output end and second according to the drive signal
Different control signals is exported in outlet；The control signal pair that the output unit 12 is used to be exported according to described control unit
High level or low level should be exported, which can export high level but also export low level, can meet
The demand of different clients, the demand that need not be directed to different clients again are customized exploitation, improve the output switch parameter electricity
The compatibility and adaptability on road solve low production efficiency caused by due to using two sets of circuits of toggle switch circuit or design
And the higher problem of production cost, production efficiency can also be improved and reduce artificial and maintenance cost.
Fig. 1 is referred to, is a kind of structure diagram of switching value output circuit provided by the utility model, the switching value
Output circuit 100 is connected between host computer and the leading-out terminal 13 of switching value output circuit 100, the switching value output circuit
100 leading-out terminal 13 can not only export high level but also can export low level.The switching value output circuit 100 includes control
Unit 11, output unit 12 and leading-out terminal 13, wherein described control unit 11 includes first input end 11a, the second input
Hold 11b, the first output end 11c and second output terminal 11d, the first input end 11a and the second input terminal 11b be used for it is upper
To receive the drive signal from host computer, described control unit 11 is used for according to the drive signal from described first for machine connection
Output control signal in output end 11c and second output terminal 11d；Output unit 12 be used for it is the first of described control unit 11 defeated
Outlet 11c is connected with second output terminal 11d, and the control signal for being exported according to described control unit 11 corresponds to the high electricity of output
Flat or low level.In some feasible embodiments, such as in the present embodiment, the host computer includes digital processing unit DSP.
Described control unit 11 simultaneously with the power end of the switching value output circuit 100, ground terminal, host computer and described defeated
Go out unit 12 to be connected, the driving which can be received according to the first input end 11a and the second input terminal 11b
Signal exports corresponding control signal from the first output end 11c and second output terminal 11d, wherein the drive signal
Including the first drive signal and the second drive signal, first and second described drive signal is handled by host computer and is exported, example
Such as, in some feasible embodiments, the host computer is digital processing unit DSP, which is number
Amount, when first drive signal of output is low level drive signal, second drive signal of output is then high electricity
Flat drive signal.In other feasible embodiments, the host computer is digital processing unit DSP, first and second driving
Signal is digital quantity, when first drive signal of output is low level drive signal, the second driving letter of output
Number can be high level drive signal may be low level drive signal.Wherein, when the first input end 11a or second is defeated
The voltage value for entering the drive signal for holding 11b to be received is equal to power supply terminal voltage value, then first input end 11a or the second input terminal
The drive signal that 11b is received is high level drive signal, when the first input end 11a or the second input terminal 11b are received
The voltage value of drive signal when being 0V, then first input end 11a or the second input terminal 11b are received drive signal is low
Level drive signal.If for example, the power end of the switching value output circuit 100 is 12V, as the first input end 11a or
When the voltage value for the drive signal that second input terminal 11b is received is equal to 12V, then the drive signal is high level drive signal.
The control signal includes first control signal and second control signal, wherein the first control signal and described second
Control signal can not export simultaneously, i.e., described control unit 11 is believed according to institute's input drive signal control output first control
Number the second control signal is exported to the output unit 12 to the output unit 12 or control.The output unit 12 is same
When be connected with the first output end 11c and second output terminal 11d of control unit 11, power end, ground terminal and output switch parameter electricity
The leading-out terminal 13 on road 100 is connected, wherein the output end of the output unit 12 is as the switching value output circuit 100
Leading-out terminal 13, the control signal for being exported according to described control unit 11 correspond to output high level or low level.One
In a little feasible embodiments, the power end of the switching value output circuit 100 is usually 5V, 12V, the switching value output circuit
100 can be applied in the electronic product of switching value output module in need.
Fig. 2 and Fig. 3 is referred to, Fig. 2 is a kind of first embodiment of switching value output circuit provided by the utility model
Frame principle figure, Fig. 3 are a kind of physical circuit figures of the first embodiment of switching value output circuit provided by the utility model.Institute
It includes control unit 11, output unit 12 and leading-out terminal 13 to state switching value output circuit 100, wherein described control unit
Including a light-coupled isolation unit 111, the output unit 12 includes the first output unit 121 and the second output unit 122.
The light-coupled isolation unit 111 simultaneously with the power end of the switching value output circuit 100, host computer and described defeated
Go out unit 12 to be connected, wherein an output end of the light-coupled isolation unit 111 is connected to described the as the first output end 11c
Two output units 122, the first control of the first drive signal output for being inputted according to power end and the first input end 11a
Signal processed is to second output unit 122；Another output end of the light-coupled isolation unit 111 is as second output terminal 11d
Be connected to first output unit 121, for according to the first input end 11a and the second input terminal 11b institutes
First and second drive signal of input exports second control signal to first output unit 121.The light-coupled isolation list
Member 111 is additionally operable to that the first control signal and the second control signal cannot be exported simultaneously, i.e., for preventing described the
One output unit 121 and the second output unit 122 simultaneously turn on, to avoid 100 short circuit of switching value output circuit.Its
In, first and second described drive signal is handled by host computer and is exported, and in the present embodiment, the host computer is digital processing
Device DSP, first and second drive signal are digital quantity, when first drive signal of output is low level drive signal
When, it may be low level drive signal that second drive signal of output, which can be high level drive signal,.
Specifically, the light-coupled isolation unit 111 is used for according between power end and the voltage of first drive signal
Determine whether the first output end 11c can export the first control signal with the presence or absence of voltage difference, if the power end
There are voltage difference between the voltage of first drive signal, i.e., the first driving that the described first input end 11a is received is believed
Number be low level drive signal, then the first output end 11c can export the first control signal to it is described second output singly
Member 122 is connected with controlling second output unit 122, when the then output switch parameter is connected in second output unit 122
The leading-out terminal 13 of circuit 100 exports low level, can meet client and need switching value output module output low level effective
Demand, at this point, no matter the second drive signal that the second input terminal 11b is received is high level drive signal or low level
Drive signal, the second output terminal 11d can not export the second control signal；Conversely, working as power end and described first
Voltage difference is not present between the voltage of drive signal, i.e., the first drive signal that the described first input end 11a is received is high electricity
When flat drive signal, the first output end 11c can not export the first control signal, and second output unit 122 closes
It is disconnected；And according between the voltage and the voltage of second drive signal of the first drive signal inputted whether there is voltage
Difference determines whether that the second control signal can be exported, specifically, the first driving letter that the first input end 11a is received
Number be high level drive signal, the second drive signal that the second input terminal 11b is received be low level drive signal, it is described
There are voltage difference between the voltage of first drive signal and the voltage of second drive signal, the second output terminal 11d is defeated
Go out the second control signal to first output unit 121 and be connected with controlling first output unit 121, when described the
The leading-out terminal 13 that the then switching value output circuit 100 is connected in one output unit exports high level, can meet client's needs
Switching value output module exports the effective demand of high level；Conversely, when first drive signal and second drive signal
Voltage between voltage difference is not present, the second output terminal 11d can not export the second control signal, first output
Unit 121 turns off.
The light-coupled isolation unit 111 includes an opto-coupler chip 1111, and the opto-coupler chip 1111 is two-way opto-coupler chip,
Including multiple two-way optocoupler An, can be applied to the input port of switching value output module can not only make positive input mouth but also can
To make all platforms of reverse input end mouth, wherein an input pin 1 of the first two-way optocoupler A1 connects power end, another input
Pin 2 is connected with the first input end 11a, an output pin 16 of the first two-way optocoupler A1 and first output unit
121 input terminal is connected, and another output pin 15 is connected to second output unit 122 as the first output end 11c
Control terminal；An input pin 3 of second two-way optocoupler A2 is connected with the first input end 11a, another input pin 4 and institute
It states the second input terminal 11b to be connected, an output pin 14 of the second two-way optocoupler A2 is connected to as the second output terminal 11d
The control terminal of first output unit 121, another output pin 13 are connected with the output end of second output unit 122.
The opto-coupler chip 1111 is used for true according to coming with the presence or absence of voltage difference between power end and the voltage of first drive signal
It is fixed whether to export the first control signal；And according to the voltage of first drive signal and second drive signal
Determine whether to export the second control signal with the presence or absence of voltage difference between voltage, is additionally operable in the light-coupled isolation unit
Play the role of light-coupled isolation between 111 other components and the output unit 12 so that other described components with it is described defeated
Go out between unit 12 without directly electrical connection.
Specifically, when the power end is 5V, if the electricity for the first drive signal that the first input end 11a is inputted
Pressure is 5V, then voltage difference is not present between the power end and the voltage value of first drive signal, by the electricity of two-way optocoupler
Road operation principle is it is found that the light emitting diode of the first two-way optocoupler A1 is not turned on, the phototriode shutdown, and described the
One two-way optocoupler A1 is not turned on, and the opto-coupler chip 1111 can not export the first control signal；And when first input
When the voltage for the first drive signal that end 11a is inputted is 5V, if the second drive signal that the second input terminal 11b is inputted
Voltage be 0V, then between the voltage of first drive signal and the voltage of second drive signal there are voltage difference, by
The circuit operation principle of two-way optocoupler it is found that the second two-way optocoupler A2 LEDs ON, the phototriode
Conducting, the second two-way optocoupler A2 conductings, the opto-coupler chip 1111 export the second control signal.The light-coupled isolation
Unit 111 further includes a diode 1112, and the diode 1112 has self-locking function, for preventing the described first two-way optocoupler
A1 and the second two-way optocoupler A2 are simultaneously turned on, i.e., for preventing the output of the first output unit 121 and second single
Member 122 simultaneously turns on, to avoid 100 short circuit of switching value output circuit.
The diode 1112 has self-locking function, specifically, when the power end is 5V, if the first input end
The voltage of first drive signal of 11a inputs is 0V, meets the condition of the first two-way optocoupler A1 conductings, the opto-coupler chip 1111
The first control signal is exported, and when the voltage of the first drive signal of first input end 11a inputs is 0V, this
When, since the light-coupled isolation unit 111 further includes a diode 1112 with self-locking function, the second input terminal 11b
The voltage of second drive signal of input can be that 0V may be 5V, and the reversed cut-off of the diode 1112, second is two-way
The light emitting diode of optocoupler A2 is not turned on, and the phototriode shutdown, the opto-coupler chip 1111 can not export described second
Signal is controlled, first output unit 121 turns off, and second output unit 122 is connected.
In some feasible embodiments, for example, in the present embodiment, the opto-coupler chip 1111 is two-way opto-coupler chip,
The model TLP290-4 of the opto-coupler chip, in other feasible embodiments, the opto-coupler chip 1111 can be unidirectional
Opto-coupler chip may include multiple unidirectional optocouplers.
The light-coupled isolation unit 111 further include 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6,
7th resistance R7, the 8th resistance R8, the first capacitance C1 and the second capacitance C2, above-mentioned all resistance are used to partial pressure current limliting, i.e.,
Partial pressure current-limiting function can be provided for each optocoupler in the opto-coupler chip 1111 so that each optocoupler can work normally；
Above-mentioned all capacitances are used to filter, wherein the 3rd resistor R3, the 4th resistance R4, the 5th resistance R5 are used to be described the
One two-way optocoupler A1 divides current limliting, for example, in the present embodiment, when the power end is 5V, due to first bi-directional light
The normal working voltage of coupling A1 is 1.2V, running current 5-20mA, then can calculate the 3rd resistor R3, the 4th electricity
The resistance value of resistance R4 and the 5th resistance R5 is divided, current limliting is so that the first two-way optocoupler A1 can be worked normally.Described
Six resistance R6, the 7th resistance R7 and the 8th resistance R8 are used to divide current limliting for the described second two-way optocoupler A2.
Specifically, one end of the 3rd resistor R3 is connected with the first input end 11a, the other end and the 4th electricity
One end of resistance R4 is connected and is connected to another input pin 2 of the described first two-way optocoupler A1, and the 4th resistance R4's is another
It holds and is connected and is connected to the power end with an input pin 1 of the described first two-way optocoupler A1, the one of the 5th resistance R5
End is connected with an output pin 16 of the described first two-way optocoupler A1, the input terminal of the other end and first output unit 121
It is connected, one end of the 6th resistance R6 is connected with the second input terminal 11b, one end of the other end and the 7th resistance R7
It is connected and is connected to another input pin 4 of the described second two-way optocoupler A2, the other end of the 7th resistance R7 and described the
Two two-way optocoupler A2, mono- input pins 3 are connected and are connected to the cathode of the diode 1112, one end of the 8th resistance R8
It is connected with an output pin 13 of the described second two-way optocoupler A2, the output end phase of the other end and second output unit 122
Even, one end of the first capacitance C1 is connected with an input pin 1, and the other end is connected with another input pin 2, institute
The one end for stating the second capacitance C2 is connected with an input pin 3, and the other end is connected with another input pin 4.
The output unit 12 includes the first output unit 121 and the second output unit 122, and the output unit 12 wraps
Include discrete component and integrated form chip.The control terminal of first output unit 121 is exported with described control unit 11
The second output terminal 11d of the second control signal is connected, i.e., is connected with an output pin 14 of the opto-coupler chip 1111,
Input terminal is connected with power end, and output end is connected with the input terminal of second output unit 122 using as the switching value
The terminal 13 of 100 output signal of output circuit, first output unit 121, which is used to work as, receives the second control signal
When, first output unit 121 is connected, and exports high level useful signal；The control terminal of second output unit 122 and institute
It states control unit 11 and exports the first output end 11c of the first control signal and be connected, i.e. one with the opto-coupler chip 1111
Output pin 15 is connected, output end ground connection, and second output unit 122, which is used to work as, receives the first control signal
When, second output unit 122 is connected, and exports low level useful signal.
Wherein, first output unit 121 includes first switch pipe T1 and first resistor R1, the first resistor R1
One end be connected with the power end, the other end is connected with the control terminal of the first switch pipe T1 using defeated as described first
Go out the control terminal of unit 121, the input terminal of the input terminal of the first switch pipe T1 as first output unit 121,
Output end of the output end as first output unit 121；Second output unit 122 include second switch pipe T2 and
One end of second resistance R2, the second resistance R2 is grounded, the other end be connected with the control terminal of the second switch pipe T2 with
As the control terminal of second output unit 122, the input terminal of the second switch pipe T2 is as second output unit
122 input terminal, output end of the output end as second output unit 122.
In some feasible embodiments, such as in the present embodiment, the first switch pipe T1 and the second switch pipe
T2 is opposite polarity discrete part, for example, the first switch pipe T1 can be P-channel mos pipes, the second switch pipe
T2 can be N-channel mos pipe, and the control terminal of the grid Gs of P-channel mos pipes as the first switch pipe T1, source level S makees
For the input terminal of the first switch pipe T1, output ends of the drain D as first switch pipe T1, the grid of N-channel mos pipes
Control terminals of the G as the second switch pipe T2, input terminals of the drain D as the second switch pipe T2, source level S conducts
The output end of the second switch pipe T2.In another example the first switch pipe T1 may be PNP triode, described second opens
It may be NPN triode to close pipe T2.
In other feasible embodiments, the first switch pipe T1 can also be integrated in the second switch pipe T2
It recommends in class pio chip.
In the above-described embodiments, design, which provides one kind, can export high level but also the low level output switch parameter of output
Circuit 100, the program can be according to a light-coupled isolation units 111 of design to realize that the switching value output circuit 100 can be defeated
Go out high useful signal, and the function of low useful signal can be exported, and in the output being electrically connected by opto-coupler chip 1111
Play the role of light-coupled isolation between unit 12 and other components of control unit 11.The switching value output circuit 100 uses
Component it is less, circuit is simple, so as to effectively simplify circuit, reduce circuit devcie, reduces and manufacturing cost and subsequently sets
Standby maintenance cost；The compatibility and adaptability of the switching value output circuit 100 can also be improved, difference need not be directed to again
The demand of client is customized exploitation, meets the actual demand of different clients, so as to effectively solve due to selecting dial-up to open
Powered-down road or design two sets circuits with realize take into account height effectively export and caused by low production efficiency and production cost it is higher
The problem of.
Fig. 4 and Fig. 5 is referred to, Fig. 4 is 100 second embodiment of a kind of switching value output circuit provided by the utility model
Frame principle figure, Fig. 5 are a kind of physical circuit figures of 100 second embodiment of switching value output circuit provided by the utility model.
The switching value output circuit 100 includes control unit 11, output unit 12 and leading-out terminal 13.Wherein, the control is single
Member 11 includes one first control unit 112 and one second control unit 113, and the output unit 12 includes the first output unit
121 and second output unit 122.
First control unit 112 is connected with power end, DSP and the output unit 12 simultaneously, specifically, described
First control unit 112 is connected with DSP by the first input end 11a for receiving first drive signal, and described
One control unit 112 is used to export the control of the first output end 11c and second output unit 122 of the first control signal
End processed is connected, and first control unit 112 is used to receive first drive signal, and defeated according to first drive signal
Go out the first control signal to second output unit 122 and be connected with controlling second output unit 122, when described the
Then the switching value output circuit 100 exports low level useful signal to the conducting of two output units 122, can meet client and need to open
It measures output module and exports the effective demand of low level in pass.Second control unit 113 simultaneously with power end, DSP and described
Output unit 12 is connected, and specifically, second control unit 113 and DSP passes through for receiving second drive signal
Second input terminal 11b is connected, and second control unit 113 is used to export the second output terminal of the second control signal
11d is connected with the control terminal of first output unit 121, and second control unit 113 is for receiving second driving
Signal, and the second control signal is exported to first output unit 121 to control according to second drive signal
The conducting of the first output unit 121 is stated, when then the switching value output circuit 100 exports height for first output unit 121 conducting
Level useful signal can meet client and switching value output module is needed to export the effective demand of high level.Wherein, described first
And second drive signal handled and export by host computer, in the present embodiment, the host computer is digital processing unit DSP, this
One and second drive signal be digital quantity, when first drive signal of output be low level drive signal when, the institute of output
It is high level drive signal to state the second drive signal.First control unit 112 and second control unit 113 are also used
In the first control signal and the second control signal cannot be exported simultaneously, i.e., for preventing first output unit
121 and second output unit 122 simultaneously turn on, to avoid 100 short circuit of the switching value output circuit.
First control unit 112 includes the first triode Q1 and the second triode Q2, the first triode Q1
Control terminal be connected with the first input end 11a, input terminal is connected and connect with the control terminal of the second triode Q2
To power end, output end ground connection, the input terminal phase of the input terminal and first output unit 121 of the second triode Q2
Even, output end is connected as the first output end 11c with the control terminal of second output unit 122 to export first control
Signal processed is connected to control second output unit 122；Second control unit 113 include third transistor Q3 with
And the 4th triode Q4, the control terminal of the third transistor Q3 are connected with the second input terminal 11b, input terminal with it is described
The control terminal of 4th triode Q4 is connected and is connected to power end, output end ground connection, the input terminal of the 4th triode Q4
It is connected with the control terminal of first output unit 121 as second output terminal 11d to export the second control signal, to
It controls first output unit 121 to be connected, output end is connected with the output end of second output unit 122.Specifically,
When the drive signal that the first input end 11a is received is low level drive signal, the first triode Q1 shutdowns will
Power end is socketed on the input terminal of the first triode Q1, the second triode Q2 is connected, and the first output end 11c is defeated
Go out the first control signal, it is described since the second input terminal 11b drive signals received are high level drive signal
Third transistor Q3 conducting, the input terminal drop-down ground connection of the 4th triode Q4, the 4th triode Q4 shutdowns, described the
Two output end 11d can not export second control signal, and second output unit 122 is connected, the switching value output circuit 100
Leading-out terminal 13 export low level useful signal；When the drive signal that the second input terminal 11b is received drives for low level
When dynamic signal, the third transistor Q3 shutdowns will socket power end in the control terminal of the 4th triode Q4, and the described 4th
Triode Q4 conductings, the second output terminal 11d exports the second control signal, since the first input end 11a is connect
The drive signal of receipts is high level drive signal, the first triode Q1 conductings, under the input terminal of the second triode Q2
Ground, the second triode Q2 shutdowns are socketed, the first output end 11c can not export first control signal, and described first is defeated
Go out the conducting of unit 121, the leading-out terminal 13 of the switching value output circuit 100 exports high level useful signal.
First control unit 112 further includes the 9th resistance R9, the tenth resistance R10 and eleventh resistor R11, described
One end of 9th resistance R9 is connected with the first input end 11a, and the other end is connected with the control terminal of the first triode Q1,
One end of the tenth resistance R10 is connected with the power end, and the other end is connected with the input terminal of the first triode Q1, institute
The one end for stating eleventh resistor R11 is connected with the input terminal of the second triode Q2, the other end and first output unit
121 input terminal is connected；Second control unit 113 further includes twelfth resistor R12, thirteenth resistor R13 and the tenth
Four resistance R14, one end of the twelfth resistor R12 are connected with the second input terminal 11b, the other end and the three or three pole
The control terminal of pipe Q3 is connected, and one end of the thirteenth resistor R13 is connected with power end, the other end and the third transistor Q3
Input terminal be connected, one end of the 14th resistance R14 is connected with the output end of the 4th triode Q4, the other end and institute
The output end for stating the second output unit 122 is connected；Above-mentioned all resistance are used to as first control unit 112 and described
Second control unit 113 provides partial pressure, the function of current limliting.
The output unit 12 includes the first output unit 121 and the second output unit 122, and the output unit 12 wraps
Include discrete component and integrated form chip.The control terminal of first output unit 121 is exported with described control unit 11
The second output terminal 11d of the second control signal is connected, i.e., defeated with the 4th triode Q4 of second control unit 113
Enter end be connected, input terminal is connected with the power end, output end be connected with the input terminal of second output unit 122 with
As the terminal 13 of 100 output signal of the switching value output circuit, first output unit 121 is used for described when receiving
When second control signal, first output unit 121 is connected, and exports high level useful signal；Second output unit 122
Control terminal export the first output end 11c of the first control signal with described control unit 11 and be connected, i.e., with described first
The output end of second triode Q2 of control unit 112 is connected, and output end ground connection, second output unit 122 is for working as
When receiving the first control signal, second output unit 122 is connected, and exports low level useful signal.
In the above-described embodiments, design, which provides one kind, can export high level but also the low level output switch parameter of output
Circuit 100, the program can be according to one first control units 112 of design and one second control unit 113 to realize that this is opened
Pass amount output circuit 100 can export the function of high useful signal and the low useful signal of output.The switching value output circuit
100 use component it is less, circuit is simple, so as to effectively simplify circuit, reduce circuit devcie, reduce manufacturing cost and
Follow-up equipment maintenance cost；The compatibility and adaptability of the switching value output circuit 100 can also be improved, it need not needle again
Demand to different clients is customized exploitation, meets the actual demand of different clients, so as to effectively solve due to selecting
Toggle switch circuit or two sets circuits of design with realize take into account height effectively export and caused by low production efficiency and be produced into
This higher problem.
Fig. 6 and Fig. 7 is referred to, Fig. 6 is 100 3rd embodiment of a kind of switching value output circuit provided by the utility model
Frame principle figure, Fig. 7 are a kind of physical circuit figures of 100 3rd embodiment of switching value output circuit provided by the utility model.
The switching value output circuit 100 includes control unit 11, output unit 12 and leading-out terminal 13.Wherein, the control is single
Member 11 include a driving unit 114 and a selecting unit 115, the output unit 12 include the first output unit 121 and
Second output unit 122.
The driving unit 114 is connected with power end, ground terminal, DSP and selecting unit 115 simultaneously, wherein the driving
The control terminal of unit 114 is connected with DSP by the first input end 11a for receiving first drive signal, input
End is connected with the input terminal of the selecting unit 115 and is connected to the power end, output end ground connection.The driving unit
114 drive the selecting unit 115 for receiving first drive signal, and according to the first drive signal received.Institute
State and selecting unit 115 while being connected with power end, ground terminal, DSP and output unit 12, wherein the selecting unit 115 it is defeated
Enter end with the input terminal of the driving unit 114 to be connected, end is selected to pass through for receiving second drive signal with DSP
Second input terminal 11b is connected, and one output end is connected to the control of first output unit 121 as second output terminal 11d
To export the second control signal, another output end is connected to the second output list as the first output end 11c at end processed
The control terminal of member 122 is to export the first control signal.The selecting unit 115 is used to receive second drive signal,
And first output unit 121 connected according to the second drive signal selection received with export the second control signal or
Person selects to connect second output unit 122 to export the first control signal, i.e., the described first control signal and institute
Stating second control signal cannot export simultaneously, for preventing first output unit, 121 and second output unit 122 simultaneously
Conducting, to avoid 100 short circuit of switching value output circuit.Wherein, first and second described drive signal is by host computer
Reason output, in the present embodiment, the host computer are digital processing unit DSP, which is digital quantity, when
When first drive signal of output is low level drive signal, second drive signal of output is high level driving letter
Number.
Specifically, the driving unit 114 includes one the 5th triode Q5, the control terminal of the 5th triode Q5 and institute
First input end 11a to be stated to be connected, input terminal is connected with the input terminal of the selecting unit 115 and is connected to the power end,
Its output end is grounded, and the first drive signal for being inputted as the first input end 11a drives when being low level drive signal
The selecting unit 115 works normally, i.e., when the voltage value of first drive signal is 0V, the 5th triode Q5 is closed
It is disconnected, socket power end on input terminal, the input terminal of the selecting unit 115 also on socket power end, and then drive the choosing
Select cell operation；And when the voltage value of first drive signal is 5V, the 5th triode Q5 conductings, input terminal phase
It is grounded when in drop-down, the input terminal of the selecting unit 115 also pulls down ground connection, and the selecting unit 115 turns off.The selection is single
Member 115 includes input terminal Z, power end VCC, selection end S, one including switcher chip a U1, the switcher chip U1
6 leads ends such as output end Y0, ground terminal GND and another output end Y1, the selection end S of the switcher chip U1 with it is described
Second input terminal 11b be connected, one output end Y0 is connected with first output unit 121, another output end Y1 with it is described
Second output unit 122 is connected, for being low level drive signal when the second drive signal of the second input terminal 11b inputs
When, the input terminal of the switcher chip U1 is connected with the output end Y0 and exports the second control signal, to
It controls first output unit 121 to be connected, so that the leading-out terminal 13 exports high level useful signal；When described second defeated
Enter to hold 11b input the second drive signal be high level drive signal when, the input terminal of the switcher chip U1 with it is described
Output end Y1 is connected and exports the first control signal, is connected to control second output unit 122, so that described
Leading-out terminal 13 exports low level useful signal.
The driving unit 114 further includes the 15th resistance R15 and the 16th resistance R16, the 15th resistance R15
One end be connected with the first input end 11a, the other end is connected with the control terminal of the 5th triode Q5；Described 16th
One end of resistance R16 is connected with power end, and the other end is connected with the input terminal of the 5th triode Q5, the 15th resistance
R15 and the 16th resistance R16 is used to provide partial pressure, the function of current limliting for the 5th triode Q5.
The output unit 12 includes the first output unit 121 and the second output unit 122, and the output unit 12 wraps
Include discrete component and integrated form chip.The control terminal of first output unit 121 is exported with described control unit 11
The second output terminal 11d of the second control signal is connected, i.e., is connected with an output end Y0 of the selecting unit 115, defeated
Enter end with the power end to be connected, output end is connected with the input terminal of second output unit 122 using as the switch
The terminal 13 of 100 output signal of output circuit is measured, first output unit 121, which is used to work as, receives the second control signal
When, first output unit 121 is connected, and exports high level useful signal；The control terminal of second output unit 122 and institute
State control unit 11 export the first control signal the first output end 11c be connected, i.e., with another output of selecting unit 115
Y1 is held to be connected, output end ground connection, second output unit 122 is used for when receiving the first control signal, described
Second output unit 122 is connected, and exports low level useful signal.
In the above-described embodiments, design, which provides one kind, can export high level but also the low level output switch parameter of output
Circuit 100, the program can be according to a driving units 114 and a selecting unit 115 for design to realize the output switch parameter
Circuit 100 can export the function of high useful signal and the low useful signal of output.What the switching value output circuit 100 used
Component is less, and circuit is simple, so as to effectively simplify circuit, reduce circuit devcie, reduces manufacturing cost and follow-up equipment
Maintenance cost；The compatibility and adaptability of the switching value output circuit 100 can also be improved, different visitors need not be directed to again
The demand at family is customized exploitation, meets the actual demand of different clients, so as to effectively solve due to selecting toggle switch
Circuit or design two sets circuits with realize take into account height effectively export and caused by low production efficiency and production cost it is higher
Problem.
Continuing with referring to Fig. 3, the following detailed description of the first of a kind of switching value output circuit 100 provided by the utility model
The operation principle of embodiment.The switching value output circuit 100 includes control unit 11, output unit 12 and output port
13.Wherein, described control unit 11 includes a light-coupled isolation unit 111, and the output unit 12 includes the first output unit 121
And second output unit 122.
It is effective to export low level：The light-coupled isolation unit 111 includes an opto-coupler chip 1111, and the opto-coupler chip is double
To opto-coupler chip comprising multiple two-way optocoupler An, can be applied to the input port of switching value output module can both make just
It can make all platforms of reverse input end mouth again to input port, wherein an input pin 1 of the first two-way optocoupler A1 connects electricity
Source, another input pin 2 are connected with the first input end 11a, an output pin 16 of the first two-way optocoupler A1 and institute
The input terminal for stating the first output unit 121 is connected, and another output pin 15 is connected to described the as the first output end 11c
The control terminal of two output units 122；An input pin 3 of second two-way optocoupler A2 is connected with the first input end 11a, another
Input pin 4 is connected with the second input terminal 11b, and an output pin 14 of the second two-way optocoupler A2 is defeated as described second
Outlet 11d is connected to the control terminal of first output unit 121, another output pin 13 and second output unit 122
Output end be connected.
According to the operation principle of the opto-coupler chip 1111 it is found that when power end and first drive signal voltage it
Between there are voltage difference, the LEDs ON of the first two-way optocoupler A1, the phototriode conducting, exportable first
Control signal is connected with controlling second output unit 122, on the contrary then do not export the first control signal, when described second
Then the switching value output circuit 100 exports low level useful signal to the conducting of output unit 122, meets client and needs switching value defeated
Go out the module output effective demand of low level.
For example, when the power supply terminal voltage value is 5V, if the first drive signal of first input end 11a inputs
Voltage is 0V, then the described first two-way optocoupler A1 conductings, export first control signal, to which second output unit 122 is led
It is logical, low level useful signal is exported, and since the light-coupled isolation unit 111 further includes a diode with self-locking function
1112, no matter the voltage of the second drive signal of the second input terminal 11b inputs drives for high level drive signal or low level
Dynamic signal, the light emitting diode of the second two-way optocoupler A2 reversely end, the second two-way optocoupler A2 shutdowns.
It is effective to export high level：According to the operation principle of the opto-coupler chip 1111 it is found that working as first drive signal
Voltage and the voltage of second drive signal between there are voltage differences, the light emitting diode of the second two-way optocoupler A2 to lead
Logical, the phototriode conducting, output second control signal is connected with controlling first output unit 121, it is on the contrary then not
The second control signal is exported, when then the switching value output circuit 100 exports high electricity for first output unit 121 conducting
Flat useful signal meets client and switching value output module is needed to export the effective demand of high level.For example, when power end electricity
When pressure value is 5V, if the voltage of the first drive signal of first input end 11a inputs is 5V, the first two-way optocoupler
A1 is turned off, and the voltage of the second drive signal of the second input terminal 11b inputs is 0V, the hair of the second two-way optocoupler A2
Optical diode is connected, and the second two-way optocoupler A2 conductings are single to control first output to export second control signal
121 conducting of member is to export high level useful signal.
Continuing with referring to Fig. 5, the following detailed description of the second of a kind of switching value output circuit 100 provided by the utility model
The operation principle of embodiment.The switching value output circuit 100 includes control unit 11, output unit 12 and leading-out terminal
13.Wherein, described control unit 11 includes one first control unit 112 and one second control unit 113, the output unit
12 include the first output unit 121 and the second output unit 122.
It is effective to export low level：First control unit 112 includes the first triode Q1 and the second triode Q2, institute
It includes third transistor Q3 and the 4th triode Q4 to state the second control unit 113, wherein the control of the first triode Q1
End is connected with the first input end 11a, and input terminal is connected with the control terminal of the second triode Q2 and is connected to power supply
End, output end ground connection, the input terminal of the second triode Q2 are connected with the input terminal of first output unit 121,
Output end is connected with the control terminal of second output unit 122 to export the first control signal, to control described
Two output units 122 are connected, i.e., when the first input end 11a input low level drive signals, in some possible embodiments
In, the voltage of the low level drive signal of the first input end 11a inputs is 0V, the first triode Q1 shutdowns, by institute
State and socket power end on the input terminal of the first triode Q1, the control terminal of the second triode Q2 also on socket power end, from
And the second triode Q2 conductings are controlled, export the first control signal is connected with controlling second output unit 122,
The leading-out terminal 13 exports low level useful signal.When the drive signal of first input end 11a inputs drives for low level
When dynamic signal, the drive signal of the second input terminal 11b inputs is high level drive signal, and the third transistor Q3 is led
Logical, the control terminal drop-down ground connection of the 4th triode Q4, the 4th triode Q4 shutdowns do not export the second control letter
Number.
It is effective to export high level：Second control unit 113 includes third transistor Q3 and the 4th triode Q4, institute
The control terminal for stating third transistor Q3 is connected with the second input terminal 11b, the control of input terminal and the 4th triode Q4
End processed is connected and is connected to power end, and output end ground connection, the input terminal of the 4th triode Q4 and first output are single
The control terminal of member 121 is connected to export the second control signal, is connected to control first output unit 121, defeated
Outlet is connected with the output end of second output unit 122, i.e. the second drive signal when the second input terminal 11b inputs
For low level drive signal when, in some possible embodiments, the low level drive signal of the second input terminal 11b input
Voltage value is 0V, third transistor Q3 shutdown, will socket power end in the control terminal of the 4th triode Q4, described the
Four triode Q4 conductings, export the second control signal to first output unit 121, first output unit 121
Conducting, the leading-out terminal 13 export high level useful signal.When the second input terminal 11b input low level drive signals
When, the drive signal of the first input end 11a inputs is high level drive signal, the first triode Q1 conductings, described
The control terminal drop-down ground connection of second triode Q2, the second triode Q2 shutdowns do not export the first control signal.
Continuing with referring to Fig. 7, the following detailed description of a kind of third of switching value output circuit 100 provided by the utility model
The operation principle of embodiment.The switching value output circuit 100 includes control unit 11, output unit 12 and leading-out terminal
13.Wherein, described control unit 11 includes a driving unit 114 and a selecting unit 115, and the output unit 12 includes the
One output unit 121 and the second output unit 122.
It is effective to export low level：The driving unit 114 includes one the 5th triode Q5, the control of the 5th triode Q5
End processed is connected with the first input end 11a, and input terminal is connected with the input terminal of the selecting unit 115 and is connected to described
Power end, output end ground connection, for being low level drive signal when the first drive signal of first input end 11a inputs
When drive the selecting unit 115, i.e., in some feasible embodiments, when the voltage of first drive signal be 0V when,
5th triode Q5 shutdown, sockets power end on input terminal, the input terminal of the selecting unit 115 also on socket power supply
End, and then drive the selecting unit work；And when the driving that the drive signal of first input end 11a inputs is high level
The selecting unit 115 is then turned off when signal, i.e., in some feasible embodiments, when the voltage of first drive signal is
When 5V, the 5th triode Q5 conducting, input terminal is equivalent to drop-down ground connection, the input terminal of the selecting unit 115 also under
Ground is socketed, the selecting unit 115 turns off.Therefore, the selecting unit 115 is driven, the first input end 11a inputs
First drive signal need to be low level drive signal.The selecting unit 115 includes a switcher chip U1, and the conversion is opened
It includes that input terminal Z, power end V, selection end S, an output end Y0, ground terminal GND and another output end Y1 etc. 6 draws to close chip U1
Foot, the selection end S of the switcher chip U1 are connected with the second input terminal 11b, and one output end Y0 is as second
Output end 11d is connected to first output unit 121, and another output end Y1 is connected to described as the first output end 11c
Second output unit 122 is used for when the second drive signal that the second input terminal 11b is inputted is high level drive signal,
I.e. in some possible embodiments, when the voltage value of second drive signal is 5V, the switcher chip U1's is defeated
Enter end to be connected with the output end Y1 and export the first control signal, be led to control second output unit 122
It is logical, so that the leading-out terminal 13 exports low level useful signal.
It is effective to export high level：The switcher chip U1 is additionally operable to the driving when the second input terminal 11b inputs
When signal is low level drive signal, i.e., in some possible embodiments, when the voltage of second drive signal is 0V, institute
The input terminal for stating switcher chip U1 is connected with the output end Y0 and exports the second control signal, to control
The conducting of the first output unit 121 is stated, so that the leading-out terminal 13 exports high level useful signal.
The utility model is described above in association with preferred embodiment, but the utility model is not limited to above take off
The embodiment shown, and the modification that various essence according to the present utility model carry out should be covered.
Claims (10)
1. a kind of switching value output circuit, which is characterized in that including：
Control unit, described control unit include first input end, the second input terminal, the first output end and second output terminal, institute
First input end and the second input terminal are stated for being connected with host computer to receive the drive signal from host computer, the control is single
Member from first output end and second output terminal for exporting control signal according to the drive signal；And
Output unit is connected with the first output end and second output terminal of described control unit, for according to described control unit
The control signal exported corresponds to output high level or low level.
2. switching value output circuit according to claim 1, it is characterised in that：The output unit includes that the first output is single
Member and the second output unit, the control terminal of first output unit are connected with the second output terminal, input termination electricity
Source, output end are connected with the input terminal of second output unit using the output end as the switching value output circuit,
First output unit when receiving the control signal exported in the second output terminal for exporting high level；Described
The control terminal of two output units is connected with first output end, and output end ground connection, second output unit is used to work as and connect
Low level is exported when receiving the control signal exported in first output end.
3. switching value output circuit according to claim 2, it is characterised in that：First output unit is opened including first
Close pipe and first resistor, a termination power end of the first resistor, the control terminal of the other end and the first switch pipe
It is connected using the control terminal as first output unit, the input terminal of the first switch pipe is as first output unit
Input terminal, output end of the output end as first output unit；Second output unit includes second switch pipe
And second resistance, one end ground connection of the second resistance, the other end are connected with the control terminal of the second switch pipe to make
For the control terminal of second output unit, the input of the input terminal of the second switch pipe as second output unit
End, output end of the output end as second output unit.
4. switching value output circuit according to claim 2, it is characterised in that：Described control unit includes a light-coupled isolation
Unit, the drive signal output control letter that the light-coupled isolation unit is used to be inputted according to power end and the first input end
It number is connected with controlling second output unit, when second output unit be connected, the switching value output circuit exports low
Level；And the drive signal output control signal inputted according to the first input end and second input terminal is to control
The first output unit conducting is made, the switching value output circuit exports high level when first output unit is connected.
5. switching value output circuit according to claim 4, it is characterised in that：The light-coupled isolation unit includes an optocoupler
Chip, the opto-coupler chip include multiple two-way optocouplers, wherein an input pin of the first two-way optocoupler connects power end, another
Input pin is connected with the first input end, and an output pin of the first two-way optocoupler is defeated with first output unit
Enter end to be connected, another output pin is connected to the control terminal of second output unit as first output end；Second pair
It is connected to an input pin of optocoupler with the first input end, another input pin is connected with second input terminal, this
One output pin of two two-way optocouplers is connected to the control terminal of first output unit as the second output terminal, another defeated
Go out pin with the output end of second output unit to be connected.
6. switching value output circuit according to claim 5, it is characterised in that：The light-coupled isolation unit further includes one or two
Pole pipe, the anode of the diode are connected with the first input end, and an input of cathode and the described second two-way optocoupler is drawn
Foot is connected, and the diode is for preventing the described first two-way optocoupler and the second two-way optocoupler from simultaneously turning on.
7. switching value output circuit according to claim 2, it is characterised in that：Described control unit includes that the first control is single
Member and the second control unit, first control unit are used to receive the drive signal inputted from the first input end,
And export from first output end according to the drive signal that the first input end inputs and control signal to control described the
Two output units are connected, and when second output unit is connected, the switching value output circuit exports low level；Described second
Control unit is for receiving the drive signal inputted from second input terminal, and the drive inputted according to second input terminal
Dynamic signal exports control signal from the second output terminal and is connected with controlling first output unit, when first output
Unit switching value output circuit output high level when being connected.
8. switching value output circuit according to claim 7, it is characterised in that：First control unit includes the one or three
The control terminal of pole pipe and the second triode, first triode is connected with the first input end, input terminal with it is described
The control terminal of second triode is connected and is connected to power end, output end ground connection, the input terminal of second triode and institute
The input terminal for stating the first output unit is connected, and output end is connected to second output unit as first output end
Control terminal is to export the control signal；Second control unit includes third transistor and the 4th triode, and described
The control terminal of three triodes is connected with second input terminal, and input terminal is connected and connects with the control terminal of the 4th triode
It is connected to power end, output end ground connection, the input terminal of the 4th triode is connected to described the as the second output terminal
To export the control signal, output end is connected the control terminal of one output unit with the output end of second output unit.
9. switching value output circuit according to claim 2, it is characterised in that：Described control unit includes a driving unit
And a selecting unit, the driving unit is for receiving the drive signal inputted from the first input end, and according to institute
The drive signal for stating first input end input drives the selecting unit；The selecting unit is for receiving from second input
The drive signal inputted in end, and first output unit is connected according to the drive signal selection of second input terminal input
Or selection connects second output unit.
10. switching value output circuit according to claim 9, it is characterised in that：The driving unit includes the five or three pole
Pipe, the control terminal of the 5th triode are connected with the first input end, the input terminal of input terminal and the selecting unit
It is connected and is connected to power end, output end ground connection；When the first input end input low level drive signal described in driving
Selecting unit；The selecting unit includes switcher chip, and the selection end of the switcher chip is inputted with described second
End is connected, and one output end is connected to first output unit as second output terminal, and another output end is defeated as first
Outlet is connected to second output unit；When the second input terminal input low level drive signal, the change-over switch
The input terminal of chip connect with the second output terminal and exports the control signal；When the second input terminal input high level
When drive signal, the input terminal of the switcher chip connect with first output end and exports the control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820423425.7U CN208060982U (en) | 2018-03-27 | 2018-03-27 | A kind of switching value output circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110099234B (en) * | 2019-05-08 | 2021-07-30 | 深圳创维－Rgb电子有限公司 | Power supply starting device and television |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110099234B (en) * | 2019-05-08 | 2021-07-30 | 深圳创维－Rgb电子有限公司 | Power supply starting device and television |
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