CN208569440U - Automatic intermodulation control circuit - Google Patents
Automatic intermodulation control circuit Download PDFInfo
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- CN208569440U CN208569440U CN201821127018.8U CN201821127018U CN208569440U CN 208569440 U CN208569440 U CN 208569440U CN 201821127018 U CN201821127018 U CN 201821127018U CN 208569440 U CN208569440 U CN 208569440U
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Abstract
A kind of automatic intermodulation control circuit includes voltage regulation unit, partial pressure unit and switch unit.The automatic intermodulation control circuit of the utility model passes through setting voltage regulation unit, partial pressure unit and switch unit.In the application process of actual automatic intermodulation control circuit, when external circuits are in output heavy condition, switch unit starts work, and voltage regulation unit and partial pressure unit feed back to feedback quantity in the output end of external circuits, the output of external circuits is stablized, feedback accuracy is high.
Description
Technical field
The utility model relates to electronic feedback technical fields, more particularly to a kind of automatic intermodulation control circuit.
Background technique
Currently, feedback be by amplifier output signal part or all, be recovered to amplifier in and input believe
It number is compared, and goes control to export with more resulting effective input signal, here it is the feedback procedures of amplifier.It feeds back
It is the important guarantor that can circuit stabilize the output voltage value or current value to the effect feedback for stablizing output end voltage perhaps electric current
Card.Traditional feed circuit is usually made of amplifier and several electronic components, but and not all feed circuit all
It needs that amplifier is arranged, the feed circuit for being provided with amplifier becomes feedback amplifier, is not provided with the feedback electricity of amplifier
Road, either feedback amplifier or feed circuit, their effect are all to stablize the voltage or electricity of output end output
Stream, guarantees the reliable output of the output end output quantity of circuit.
In an existing electrical circuit, in particular, it for the circuit more than two-way exported, can be set in multiple output ends of circuit
Feed circuit is set, guarantees that stablizing for the multiple output ends of circuit exports with this.But that there are feedback accuracies is not high for existing feed circuit
The problem of, cause feed circuit that can not play the role of external circuits output end reliable and stable.
Utility model content
The purpose of the utility model is to overcome shortcoming in the prior art, it is higher to provide a kind of feedback accuracy, energy
It is enough to play the role of reliable and stable automatic intermodulation control circuit to external circuit output end.
The purpose of this utility model is achieved through the following technical solutions:
A kind of automatic intermodulation control circuit, comprising:
Voltage regulation unit, the feedback input end of the voltage regulation unit and the output end of external circuits connect；
Partial pressure unit, the feedback input end of the partial pressure unit and the output end of external circuits connect；And
Switch unit, the first input end of the switch unit is connect with the feedback output end of the voltage regulation unit, described
Second input terminal of switch unit is connect with the feedback output end of the partial pressure unit, the ground terminal ground connection of the switch unit.
In a wherein embodiment, the voltage regulation unit includes multiple zener diodes, multiple two poles of pressure stabilizing
Pipe sequential series connect and form voltage regulator circuit, the yin of the zener diode positioned at starting point in the voltage regulator circuit
Pole is connected as the feedback input end of the voltage regulation unit and the output end of external circuits, and being located in the voltage regulator circuit terminates
First input of the anode of the zener diode at end as the feedback output end and the switch unit of the voltage regulation unit
End connection.
In a wherein embodiment, the voltage regulation unit includes three zener diodes, first pressure stabilizing two
Pole pipe, second zener diode are connected with the third zener diode sequential series, first pressure stabilizing two
Pole pipe cathode is connected as the feedback input end of the voltage regulation unit and the output end of external circuits, third two pole of pressure stabilizing
The anode of pipe is connect as the feedback output end of the voltage regulation unit with the first input end of the switch unit.
In a wherein embodiment, the voltage regulation unit includes a zener diode, the zener diode
Cathode is connected as the feedback input end of the voltage regulation unit and the output end of external circuits, and the anode of the zener diode is made
It is connect for the feedback output end of the voltage regulation unit with the first input end of the switch unit.
In a wherein embodiment, the partial pressure unit includes the first partial pressure parallel circuit and the second partial pressure electricity in parallel
Road, the first partial pressure parallel circuit include multiple first partial pressure parallel resistances, and multiple first partial pressure parallel resistances are mutual
It is connected in parallel, the second partial pressure parallel circuit includes multiple second partial pressure parallel resistances, multiple second partial pressure electricity in parallel
Resistance is connected in parallel with each other；
The first end conduct of the first partial pressure parallel resistance for being located at starting point in the first partial pressure parallel circuit
The feedback input end of the partial pressure unit is connect with external circuits, the institute positioned at clearing end in the first partial pressure parallel circuit
State second partial pressure for being located at starting point in the second end and the second partial pressure parallel circuit of the first partial pressure parallel resistance
The first end of parallel resistance connects, the second partial pressure parallel resistance for being located at clearing end in the second partial pressure parallel circuit
Second end connect as the feedback output end of the partial pressure unit with the second input terminal of the switch unit.
In a wherein embodiment, it is described first partial pressure parallel circuit include three first partial pressure parallel resistances, three
A first partial pressure parallel resistance is connected in parallel with each other, and the second partial pressure parallel circuit includes three second partial pressures electricity in parallel
Resistance, three the second partial pressure parallel resistances are connected in parallel with each other.
In a wherein embodiment, the partial pressure unit include a divider resistance, the first of the divider resistance
The feedback input end as the partial pressure unit is held to connect with external circuits, the second end of the divider resistance is as the partial pressure
The feedback output end of unit is connect with the second input terminal of the switch unit.
In a wherein embodiment, the switch unit includes first switch tube and pull-up resistor, and described first opens
It is defeated as the feedback of the first input end and the voltage regulation unit of the switch unit to close pull-up resistor described in the base series of pipe
Outlet connection, the collector of the first switch tube as the switch unit the second input terminal and the partial pressure unit it is anti-
Output end connection is presented, the emitter of the first switch tube is grounded as the ground terminal of the switch unit.
In a wherein embodiment, the switch unit further includes pull down resistor, the first end of the pull down resistor
It is connect with the base stage of the first switch tube, the second end of the pull down resistor is connect with the emitter of the first switch tube.
In a wherein embodiment, the switch unit further includes filter capacitor, the first end of the filter capacitor
It is connect with the base stage of the first switch tube, the second end of the filter capacitor is connect with the emitter of the first switch tube.
Compared with prior art, the utility model at least has the following advantages:
The automatic intermodulation control circuit of the utility model passes through setting voltage regulation unit, partial pressure unit and switch unit.In reality
In the application process of the automatic intermodulation control circuit on border, when external circuits are in output heavy condition, switch unit starts work
Make, voltage regulation unit and partial pressure unit feed back to feedback quantity in the output end of external circuits, carry out to the output of external circuits steady
Fixed, feedback accuracy is high.
Detailed description of the invention
Fig. 1 is the circuit theory schematic diagram of the automatic intermodulation control circuit in one embodiment of the utility model.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this
The disclosure of type understands more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
Referring to Fig. 1, automatic intermodulation control circuit 10 includes voltage regulation unit 100, partial pressure unit 200 and switch unit 300；
The feedback input end of voltage regulation unit 100 and the output end of external circuits connect；The feedback input end of partial pressure unit 200 and external electricity
The output end on road connects；The first input end of switch unit 300 is connect with the feedback output end of voltage regulation unit 100, switch unit
200 the second input terminal is connect with the feedback output end of partial pressure unit 200, the ground terminal ground connection of switch unit 300.In this way,
In actual automatic 10 application process of intermodulation control circuit, when external circuits are in output heavy condition, switch unit 300 is opened
It starts building to make, voltage regulation unit 100 and partial pressure unit 200 feed back to feedback quantity in the output end of external circuits, to external circuits
Output is stablized, and feedback accuracy is high.
Further, referring to Fig. 1, in one embodiment, voltage regulation unit 100 includes multiple zener diodes
ZDn, wherein n is the positive integer more than or equal to 1, and multiple zener diode ZDn sequential series connect and form pressure stabilizing electricity
Road, the cathode of the zener diode ZDn positioned at starting point in voltage regulator circuit is as the feedback input end of voltage regulation unit 100 and outer
The output end connection of circuit is connect, the anode of the zener diode ZDn positioned at clearing end in voltage regulator circuit is as voltage regulation unit 100
Feedback output end connect with the first input end of switch unit 300, also that is, for example, voltage regulation unit 100 include four diodes
When, starting point of first zener diode ZD1 as voltage regulator circuit, the cathode of first zener diode ZD1 is as pressure stabilizing
The feedback input end of unit 100；4th zener diode ZD4 is located at the clearing end of voltage regulator circuit, the 4th zener diode
Feedback output end of the anode of ZD4 as voltage regulation unit 100.
Specifically, referring to Fig. 1, in one embodiment, voltage regulation unit 100 includes three zener diodes, the
One zener diode D1, second zener diode D2 are connected with third zener diode D3 sequential series, and first steady
Diode D1 cathode is pressed to connect as the feedback input end of voltage regulation unit 100 and the output end of external circuits, third pressure stabilizing two
The anode of pole pipe D3 is connect as the feedback output end of voltage regulation unit 100 with the first input end of switch unit 300.
Further, referring to Fig. 1, in one embodiment, partial pressure unit 200 includes the first partial pressure parallel circuit
With the second partial pressure parallel circuit, the first partial pressure parallel circuit includes multiple first partial pressure parallel resistances, and multiple first partial pressures are in parallel
Resistance is connected in parallel with each other, and the second partial pressure parallel circuit includes multiple second partial pressure parallel resistances, multiple second partial pressure electricity in parallel
Resistance is connected in parallel with each other；
The first end of the first partial pressure parallel resistance positioned at starting point in first partial pressure parallel circuit is as partial pressure unit
200 feedback input end is connect with external circuits, the first partial pressure electricity in parallel positioned at clearing end in the first partial pressure parallel circuit
The second end of resistance is connect with the first end of the second partial pressure parallel resistance positioned at starting point in the second partial pressure parallel circuit, and second
Divide feedback output of the second end of the second partial pressure parallel resistance positioned at clearing end in parallel circuit as partial pressure unit 200
End is connect with the second input terminal of switch unit 300.
Specifically, referring to Fig. 1, in one embodiment, the first partial pressure parallel circuit includes three first partial pressures
Parallel resistance, three first partial pressure parallel resistances are connected in parallel with each other, and the second partial pressure parallel circuit includes three second and divides simultaneously
Join resistance, three second partial pressure parallel resistances are connected in parallel with each other.
Further, referring to Fig. 1, in one embodiment, switch unit 300 includes first switch tube Q1 and upper
First input end and pressure stabilizing list of the base series pull-up resistor RL of pull-up resistor RL, first switch tube Q1 as switch unit 300
The collector of the feedback output end connection of member 100, first switch tube Q1 is single as the second input terminal and partial pressure of switch unit 300
The emitter of the feedback output end connection of member 200, first switch tube Q1 is grounded as the ground terminal of switch unit 300.
The concrete operating principle of automatic intermodulation control circuit 10 is described in detail below:
Referring to Fig. 1, voltage regulator circuit shown in FIG. 1 includes three zener diodes, respectively zener diode
ZD1, zener diode ZD2 and zener diode ZD3；First partial pressure parallel circuit includes three first partial pressure parallel resistances,
Respectively first partial pressure parallel resistance R1, the first partial pressure parallel resistance R2 and the first partial pressure parallel resistance R3；Second partial pressure is simultaneously
Join circuit include three second partial pressure parallel resistances, respectively second partial pressure parallel resistance R4, second divide parallel resistance R5 with
And second partial pressure parallel resistance R6；Switch unit includes first switch tube Q1 and pull-up resistor RL；
When external circuits are in output heavy condition, the voltage of external circuits output is separately input into voltage regulation unit 100
Feedback input end and partial pressure unit 200 feedback input end, external circuits output voltage pass through three zener diodes
After ZD1, ZD2 and ZD3 decompression, by the first input end of the voltage input after decompression to switch unit 300, that is, after being depressured
For voltage from the base stage that pull-up resistor RL is input to first switch tube Q1, the voltage of base stage at this time is Vb；At the same time, external electricity
The voltage on road will divide by the partial pressure of first partial pressure parallel resistance R1, R2 and R3 and second partial pressure parallel resistance R4, R5 and R6
Voltage input after pressure is into the collector of first switch tube Q1, and the voltage of collector is Vc at this time, as Vb-Ve > 0.7v, Ve
For the voltage of first switch tube emitter, first switch tube Q1 is connected at this time, flows through electric current=[(R1/R2/ of partial pressure unit 200
R3)/3+ (R6/R5/R4)/3], feedback quantity is fed back in the output end of external circuits, stable external circuits output end is played
Effect prevents the output end heavy duty of external circuits；
As Vb-Ve < 0.7v, first switch tube Q1 is not turned on, that is, switch unit 300 does not work, automatic intermodulation control
Circuit does not work, and the output end of external circuits, which exports, to be stablized.
It should be noted that user can export situation with the output end of actual external circuits, by adjusting two pole of pressure stabilizing
Pipe ZD1, ZD2 and ZD3；First partial pressure parallel resistance R1, the first partial pressure parallel resistance R2 and the first partial pressure parallel resistance R3；The
The design parameter of two partial pressure parallel resistance R4, the second partial pressure parallel resistance R5 and the second partial pressure parallel resistance R6, are come steady with this
Determine the effect of external circuits output end, easy to adjust and feedback accuracy is high, and user exports situation in combination with actual external circuits
Set specific component parameter value flexibly to reach optimal feedback effects, feedback accuracy is high and reliable.
It should also be noted that, the automatic intermodulation control circuit of the application, can be played by simple several components
High-precision feedback quantity, feedback effects are good, the low manufacture cost of circuit.
Specifically, in one embodiment, voltage regulation unit 100 includes a zener diode, the cathode of zener diode
It is connected as the feedback input end of voltage regulation unit 100 and the output end of external circuits, the anode of zener diode is as pressure stabilizing list
The feedback output end of member 100 is connect with the first input end of switch unit 300.In this way, voltage regulation unit 100 is considering circuit production
In the case where cost, voltage regulation unit 100 can only include a zener diode, and a zener diode equally can be to external
The voltage of circuit output end, which plays, is depressured stable effect.
Specifically, in one embodiment, partial pressure unit 200 includes a divider resistance, and the first end of divider resistance is made
Feedback input end for partial pressure unit 200 is connect with external circuits, feedback of the second end of divider resistance as partial pressure unit 200
Output end is connect with the second input terminal of switch unit 300.In this way, partial pressure unit 200 is the case where considering circuit production cost
Under, partial pressure unit 200 can only include a divider resistance, and a divider resistance equally can be to the electricity of external circuit output end
Pressure plays the role of partial pressure, and divider resistance is identical as the first partial pressure parallel resistance and the second partial pressure parallel resistance.
Specifically, referring to Fig. 1, in one embodiment, switch unit 300 further includes pull down resistor RT, drop-down
The first end of resistance RT is connect with the base stage of first switch tube Q1, the second end of pull down resistor RT and the transmitting of first switch tube Q1
Pole connection.In this way, pull down resistor RT plays the role of protecting first switch tube Q1, prevent first switch tube Q1 from damaging, improves certainly
The reliability of dynamic intermodulation circuit 10.
Specifically, referring to Fig. 1, in one embodiment, switch unit 300 further includes filter capacitor C1, filtering
The first end of capacitor C1 is connect with the base stage of first switch tube Q1, the second end of filter capacitor C1 and the transmitting of first switch tube Q1
Pole connection.In this way, filter capacitor C1 plays the role of filtering, the clutter in switch unit 300 is filtered out, is prevented split to clutter
It closes unit 300 and generates interference.
The automatic intermodulation control circuit of the utility model passes through setting voltage regulation unit, partial pressure unit and switch unit.In reality
In the application process of the automatic intermodulation control circuit on border, when external circuits are in output heavy condition, switch unit starts work
Make, voltage regulation unit and partial pressure unit feed back to feedback quantity in the output end of external circuits, carry out to the output of external circuits steady
Fixed, feedback accuracy is high.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of automatic intermodulation control circuit characterized by comprising
Voltage regulation unit, the feedback input end of the voltage regulation unit and the output end of external circuits connect；
Partial pressure unit, the feedback input end of the partial pressure unit and the output end of external circuits connect；And
Switch unit, the first input end of the switch unit are connect with the feedback output end of the voltage regulation unit, the switch
Second input terminal of unit is connect with the feedback output end of the partial pressure unit, the ground terminal ground connection of the switch unit.
2. automatic intermodulation control circuit according to claim 1, which is characterized in that the voltage regulation unit includes multiple pressure stabilizings
Diode, multiple zener diode sequential series connect and form voltage regulator circuit, being located in the voltage regulator circuit
The cathode of the zener diode at beginning is connected as the feedback input end of the voltage regulation unit and the output end of external circuits,
Feedback output end of the anode of the zener diode positioned at clearing end in the voltage regulator circuit as the voltage regulation unit
It is connect with the first input end of the switch unit.
3. automatic intermodulation control circuit according to claim 2, which is characterized in that the voltage regulation unit includes three pressure stabilizings
Diode, first zener diode, second zener diode and third the zener diode sequence are gone here and there
Connection connection, first zener diode cathode is as the feedback input end of the voltage regulation unit and the output end of external circuits
Connection, the anode of the third zener diode as the voltage regulation unit feedback output end and the switch unit the
The connection of one input terminal.
4. automatic intermodulation control circuit according to claim 1, which is characterized in that the voltage regulation unit includes a pressure stabilizing
The cathode of diode, the zener diode connects as the feedback input end of the voltage regulation unit and the output end of external circuits
It connects, the anode of the zener diode is as the feedback output end of the voltage regulation unit and the first input end of the switch unit
Connection.
5. automatic intermodulation control circuit according to claim 1, which is characterized in that the partial pressure unit includes the first partial pressure
Parallel circuit and the second partial pressure parallel circuit, the first partial pressure parallel circuit includes multiple first partial pressure parallel resistances, multiple
The first partial pressure parallel resistance is connected in parallel with each other, and the second partial pressure parallel circuit includes multiple second partial pressure electricity in parallel
Resistance, multiple second partial pressure parallel resistances are connected in parallel with each other；
Described in the first end of the first partial pressure parallel resistance for being located at starting point in the first partial pressure parallel circuit is used as
The feedback input end of partial pressure unit is connect with external circuits, be located at clearing end described the in the first partial pressure parallel circuit
The second end of one partial pressure parallel resistance divides in parallel positioned at second partial pressure of starting point in parallel circuit with described second
The first end of resistance connects, and the of the second partial pressure parallel resistance for being located at clearing end in the second partial pressure parallel circuit
Two ends are connect as the feedback output end of the partial pressure unit with the second input terminal of the switch unit.
6. automatic intermodulation control circuit according to claim 5, which is characterized in that described first, which divides parallel circuit, includes
Three first partial pressure parallel resistances, three the first partial pressure parallel resistances are connected in parallel with each other, the second partial pressure electricity in parallel
Road includes three second partial pressure parallel resistances, and three the second partial pressure parallel resistances are connected in parallel with each other.
7. automatic intermodulation control circuit according to claim 1, which is characterized in that the partial pressure unit includes a partial pressure
The first end of resistance, the divider resistance is connect as the feedback input end of the partial pressure unit with external circuits, the partial pressure
The second end of resistance is connect as the feedback output end of the partial pressure unit with the second input terminal of the switch unit.
8. automatic intermodulation control circuit according to claim 1, which is characterized in that the switch unit includes first switch
Pipe and pull-up resistor, first input end of the pull-up resistor as the switch unit described in the base series of the first switch tube
It is connect with the feedback output end of the voltage regulation unit, the collector of the first switch tube is second defeated as the switch unit
Enter end to connect with the feedback output end of the partial pressure unit, emitter the connecing as the switch unit of the first switch tube
Ground terminal ground connection.
9. automatic intermodulation control circuit according to claim 8, which is characterized in that the switch unit further includes drop-down electricity
Resistance, the first end of the pull down resistor connect with the base stage of the first switch tube, the second end of the pull down resistor with it is described
The emitter of first switch tube connects.
10. automatic intermodulation control circuit according to claim 8, which is characterized in that the switch unit further includes filtering
Capacitor, the first end of the filter capacitor are connect with the base stage of the first switch tube, the second end of the filter capacitor and institute
State the emitter connection of first switch tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821127018.8U CN208569440U (en) | 2018-07-16 | 2018-07-16 | Automatic intermodulation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821127018.8U CN208569440U (en) | 2018-07-16 | 2018-07-16 | Automatic intermodulation control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208569440U true CN208569440U (en) | 2019-03-01 |
Family
ID=65493439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821127018.8U Active CN208569440U (en) | 2018-07-16 | 2018-07-16 | Automatic intermodulation control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208569440U (en) |
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2018
- 2018-07-16 CN CN201821127018.8U patent/CN208569440U/en active Active
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