CN209447742U - A kind of single fiery switching circuit that relay zero-crossing is cut-off - Google Patents
A kind of single fiery switching circuit that relay zero-crossing is cut-off Download PDFInfo
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- CN209447742U CN209447742U CN201920036245.8U CN201920036245U CN209447742U CN 209447742 U CN209447742 U CN 209447742U CN 201920036245 U CN201920036245 U CN 201920036245U CN 209447742 U CN209447742 U CN 209447742U
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Abstract
The utility model is suitable for single fiery switching technique field, provides a kind of single fiery switching circuit that relay zero-crossing is cut-off.First zero cross detection circuit therein is used to collect the current zero-crossing signal of the product when relay module is in opening state using single fiery switching circuit, and exports current zero-crossing signal to the control module；Second zero cross detection circuit is used to collect the voltage zero-crossing signal of the product when relay module is in an off state using single fiery switching circuit, and output voltage zero cross signal gives the control module；The control module is used to calculate the voltage over zero of the product using single fiery switching circuit according to current zero-crossing signal and voltage zero-crossing signal.Since the realization of zero crossing detection function is divided into ON state circuit different from two kinds of OFF state, it is only necessary to which the zero passage switch movement of relay module can be realized in very small power consumption, and the service life of the product using single fiery switching circuit is greatly improved.
Description
Technical field
Single fire switch electricity that the utility model belongs to single fiery switching technique field more particularly to a kind of relay zero-crossing is cut-off
Road.
Background technique
For switch on wall as intelligence end entrance most preferred in full room intellective scheme, Intellectualized Tendency is always each factory
The technical research direction that family is continually striving to, the single fire switch of intelligence exactly generate in that case.Current intelligent Dan Huokai
Pass scheme mainly has using SCR control and controls two kinds of directions using relay.Above-mentioned SCR control has achievable
The advantages of light modulation, but because of the reason of taking electricity, fever and volume of switch size itself, program product can only be adapted to mid power
Load, and its for it is small load and heavy load can all generate different problems.
Above-mentioned relay control can be adapted to several kilowatts of maximum at present, and the super wide range of minimum 3W lamps and lanterns is a kind of reason
The preferred embodiment thought, but relay is acted in non-zero crossing, will seriously reduce its service life, is become the entire intelligence of restriction and is opened
Close the bottleneck in service life.
Due to the small power consumption of single fire switch, the power consumption of zero passage detection chip is bigger, if in above-mentioned relay controlling party
The zero crossing of zero passage detection chip detection relay is added in case, will affect and imitated using the use of the low-power load of single fire switch
Fruit.
Utility model content
The utility model provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, it is intended to solve to be based on zero-crossing examination
Carry out switch relay module, extends relay module service life, while making entire circuit power consumption very low, do not influence small load
The problem of Shi Kaiguan is used.
The utility model is realized in this way single fiery switching circuit that a kind of relay zero-crossing is cut-off, comprising:
Relay module, control module, the first zero cross detection circuit, the second zero cross detection circuit；
First zero cross detection circuit uses the list when the relay module is in opening state for collecting
The current zero-crossing signal of the product of fiery switching circuit, and the current zero-crossing signal is exported to the control module；
Second zero cross detection circuit uses the list when the relay module is in an off state for collecting
The voltage zero-crossing signal of the product of fiery switching circuit, and the voltage zero-crossing signal is exported to the control module；
The control module, which is used to be calculated according to the current zero-crossing signal and the voltage zero-crossing signal, uses the list
The voltage over zero of the product of fiery switching circuit is opened when the product in non-zero points single fiery switching circuit described to application carries out power supply
When disconnected operation, the control module automatic time delay carries out the relay module to the voltage over zero to cut-off operation.
Further, single fiery switching circuit that the relay zero-crossing is cut-off, further includes:
It is connected between firewire inlet side mouthful and the relay module, the protection electricity of thermal cutoff is crossed when controller
Road.
Further, single fiery switching circuit that the relay zero-crossing is cut-off, further includes:
The ON state power-supply circuit of energy is obtained under the relay module opening state；
The OFF state power-supply circuit of energy is obtained under the relay module off state.
Further, first zero cross detection circuit, comprising:
It is connect with the relay module, city's electric signal that the relay module is entered by firewire inlet side mouthful is sent into
The mutual inductor of first optocoupler；
It is connected between the secondary of the mutual inductor and the first optocoupler, to being passed through under the relay module opening state
Cross the first rectification circuit that city's electric signal of the mutual inductor is rectified；
It is connect with the control module, by the first optocoupler of the signal conduction of first rectification circuit output.
Further, the OFF state power-supply circuit includes: to be connected to firewire exit port and first zero passage detection electricity
First diode between road, and the metal-oxide-semiconductor in parallel with the first diode, the metal-oxide-semiconductor also with the control module
PWM port be connected.
Further, second zero cross detection circuit, comprising:
It is connect with firewire inlet side mouthful, is sent to the second optocoupler after rectifying to city's electric signal by firewire inlet side mouthful
The second rectification circuit；
It is connect with firewire exit port and the control module, the signal conduction exported by second rectification circuit, it will
Signal is sent into the second optocoupler of the control module.
Further, first rectification circuit, comprising: for the secondary signal rectification for passing to the mutual inductor
The second diode and third diode, and for after rectification signal filtering first capacitor and the second capacitor；
The anode of second diode and the third diode is connect with the secondary of the mutual inductor respectively, and described the
The cathode of two diodes and the third diode connects with two light emitting diode anodes in first optocoupler respectively
It connects；The light emitting diode cathode connecting with second diode cathode is connect with the third diode cathode, with described
The light emitting diode cathode of three diode cathodes connection is connect with second diode cathode, the first capacitor and described the
Two capacitors are parallel to two light emitting diode both ends in first optocoupler respectively.
Further, first rectification circuit, comprising: for the secondary current signal for passing to the mutual inductor
The second diode and third diode of rectifying and wave-filtering；
The anode of second diode and the third diode is connect with the secondary of the mutual inductor respectively, and described the
Three diode cathodes are connected on the anode of second diode and the secondary connecting line of the mutual inductor；Described 2nd 2
Pole pipe cathode connects the anode of the light emitting diode in first optocoupler, the third diode cathode connection described first
Light emitting diode cathode in optocoupler, the transistor collector in first optocoupler connect the control module,
Emitter ground connection.Further, second rectification circuit, comprising:
Anode is connect with firewire inlet side mouthful, the 4th diode that cathode is connect with second optocoupler.
Further, second rectification circuit, comprising: full-wave rectifying circuit.
Single fiery switching circuit that relay zero-crossing provided by the utility model is cut-off, due to by the realization of zero crossing detection function
It is divided into ON state circuit different from two kinds of OFF state, therefore only needs very small power consumption, the zero passage that relay module can be realized is opened
The service life of the product using single fiery switching circuit is greatly improved in pass movement.
Detailed description of the invention
Fig. 1 is single fiery switching circuit block diagram that the relay zero-crossing that the utility model embodiment one to three provides is cut-off；
Fig. 2 is the list that the relay zero-crossing that the utility model embodiment four, embodiment five and embodiment seven provide is cut-off
Fiery switching circuit figure；
Fig. 3 is single fiery switching circuit figure that the relay zero-crossing that the utility model embodiment six, embodiment nine provide is cut-off；
Fig. 4 is single fiery switching circuit figure that the relay zero-crossing that the utility model embodiment eight provides is cut-off；
Fig. 5 is single fiery switching circuit figure that the relay zero-crossing that the utility model embodiment ten provides is cut-off.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, comprising: relay mould
Block, control module, the first zero cross detection circuit, the second zero cross detection circuit.First zero cross detection circuit is worked as collecting
Using the current zero-crossing signal of the product of single fiery switching circuit when the relay module is in opening state, and export institute
Current zero-crossing signal is stated to the control module.Second zero cross detection circuit is for collecting when the relay module is in
Using the voltage zero-crossing signal of the product of single fiery switching circuit when off state, and the voltage zero-crossing signal is exported to institute
State control module.The control module is used to be calculated described in use according to the current zero-crossing signal and the voltage zero-crossing signal
The voltage over zero of the product of single fire switching circuit, when the product in non-zero points single fiery switching circuit described to application carries out power supply
When cut-offfing operation, the control module automatic time delay carries out the relay module to the voltage over zero to cut-off operation.
By the way that zero passage detection to be divided into the framework of ON state and OFF state both of which, each mode has a zero cross detection circuit to carry out work
Make, it is only necessary to which the zero passage switch that very relay module can be realized in low power consumption acts, and increases substantially making for entire switch product
Use the service life.
Embodiment one
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, as shown in Figure 1, packet
It includes:
Relay module 100, the first zero cross detection circuit 200, the second zero cross detection circuit 300, control module 400；
First zero cross detection circuit 200 is for collecting when relay module 100 is in opening state using single fire switch
The current zero-crossing signal of the product of circuit, and current zero-crossing signal is exported to control module 400；
Second zero cross detection circuit 300 is for collecting when relay module 100 is in an off state using single fire switch
The voltage zero-crossing signal of the product of circuit, and output voltage zero cross signal is to control module 400；
Control module 400 is used to calculate the production using single fiery switching circuit according to current zero-crossing signal and voltage zero-crossing signal
The voltage over zero of product, when the product in non-zero points fiery switching circuit single to application, which carries out power supply, cut-offs operation, control module
400 automatic time delays carry out relay module 100 to voltage over zero to cut-off operation.
Single fiery switching circuit working principle that relay zero-crossing provided in this embodiment is cut-off is as follows:
When relay module 100 is in off state, the work of the second zero cross detection circuit 300 collects and uses Dan Huokai
The current zero-crossing signal of the product on powered-down road is exported to control module 400；When relay module 100 is in opening state, the
The work of one zero cross detection circuit 200 is collected and is exported using the voltage zero-crossing signal of the product of single fiery switching circuit to control module
400.Control module 400 is calculated according to the above-mentioned current zero-crossing signal and voltage zero-crossing signal being collected into using single fiery switching circuit
Product voltage over zero, when product of the non-zero points to the single fiery switching circuit of application carries out power supply and cut-offs operation, control
400 automatic time delay of module carries out relay module 100 to voltage over zero to cut-off operation.
Zero passage detection is divided into the framework of ON state and OFF state both of which by the present embodiment, each mode has a zero passage inspection
Slowdown monitoring circuit works, and the realization of zero crossing detection function is divided into the first zero cross detection circuit 200 and the second zero cross detection circuit
300, it is only necessary to which the zero passage switch that very relay module 100 can be realized in low power consumption acts, and increases substantially using single fire switch
The service life of the product of circuit.Voltage over zero based on the product for using single fiery switching circuit detects come switch relay mould
Block 100 extends 100 service life of relay module, while making the product power consumption using single fiery switching circuit very low, not shadow
Ring the use switched when small load.Relay module 100, control module 400 are all made of the module of market purchasing, specific structure
And circuit is not the innovative point of the application, therefore, relay module 100, the specific structure of control module 400 and circuit are herein not
It limits and repeats.
Embodiment two
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, as shown in Figure 1, in reality
On the basis of applying example one, single fiery switching circuit that relay zero-crossing is cut-off be may further comprise:
It is connected between firewire inlet side mouthful and relay module 100, the protection electricity of thermal cutoff is crossed when controller
Road 500.
Protection circuit in the present embodiment preferably uses fuse F1, to the electric current service condition of entire single fiery switching circuit
Realize protection, when the electric current for being more than threshold value flows into single fiery switching circuit, protection circuit can cross thermal cutoff, to protect subsequent electricity
Road.
Embodiment three
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, as shown in Figure 1, in reality
On the basis of applying example one, single fiery switching circuit that relay zero-crossing is cut-off be may further comprise:
The ON state power-supply circuit 600 of energy is obtained under 100 opening state of relay module；
The OFF state power-supply circuit 700 of energy is obtained under 100 off state of relay module.
Can also include:
It is defeated that steady dc voltage is converted by the energy that ON state power-supply circuit 600 or OFF state power-supply circuit 700 obtain
Out to the voltage regulator circuit 800 of control module 400.
ON state power-supply circuit 600 and OFF state power-supply circuit 700 in the present embodiment is respectively in the switch of relay module 100
Energy is obtained under two states, output exports steady dc voltage from voltage regulator circuit 800 and mention to subsequent voltage regulator circuit 800
Supply subsequent control module 400.
Example IV
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, as shown in Fig. 2, in reality
On the basis of applying example one, the first zero cross detection circuit 200, comprising:
It is connect with relay module 100, city's electric signal that relay module 100 is entered by firewire inlet side mouthful is sent into the
The mutual inductor 201 of one optocoupler 203；
It is connected between the secondary of mutual inductor 201 and the first optocoupler 203, under 100 opening state of relay module
The first rectification circuit 202 rectified by city's electric signal of mutual inductor 201；
It is connect with control module 400, by the first optocoupler 203 of the signal conduction that the first rectification circuit 202 exports.
In the present embodiment, city's electric signal is entered by firewire inlet side mouthful, and relay module 100 is passed through by control module 400
I/O_4 port controlling is cut-off, and mutual inductor 201 is the T1 in figure, using punching current transformer class device, the first optocoupler
203 be the U1 in figure, and when relay module 100 is in opening state, city's electric signal is transferred to secondary by mutual inductor 201, is led to
After crossing the rectification of the first rectification circuit 202, two light emitting diodes inside the first optocoupler 203 are connected in signal in turn, will believe
Two pins of the first optocoupler 203 number are transferred to, the two pins meet the I/O_2 and I/O_1 of control module 400 respectively,
To make control module 400 receive the current zero-crossing point signal of the product using single fiery switching circuit.
Embodiment five
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, as shown in Fig. 2, in reality
On the basis of applying example three, OFF state power-supply circuit 700 includes: to be connected between firewire exit port and the first zero cross detection circuit 200
First diode D1, and the metal-oxide-semiconductor Q1 in parallel with first diode D1, PWM port of the metal-oxide-semiconductor Q1 also with control module 400
It is connected.
It can be realized by first diode D1 and metal-oxide-semiconductor Q1 connected in parallel in relay module 100 in the present embodiment
Energy is obtained under off state, and the energy of acquirement is exported to subsequent voltage regulator circuit 800, is exported surely from voltage regulator circuit 800
Fixed DC voltage is supplied to subsequent control module 400.
Embodiment six
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, as shown in figure 3, in reality
On the basis of applying example one, the second zero cross detection circuit 300, comprising:
It is connect with firewire inlet side mouthful, is sent to the second optocoupler after rectifying to city's electric signal by firewire inlet side mouthful
302 the second rectification circuit 301；
It is connect with firewire exit port and control module 400, the signal conduction exported by the second rectification circuit 301 will be believed
Number be sent into control module 400 the second optocoupler 302.
In the present embodiment, when relay module is in off state, city's electric signal is rectified by the second rectification circuit 301
Afterwards, successively pass through resistance R3, R4, R5, into the second optocoupler 302 (U2 in Fig. 3), passed by the photoelectric coupling inside U2
Defeated two output pins to U2, one connects the I/O_3 pin of control module 400 in the two output pins, another ground connection.
When the voltage over zero of the product using single fiery switching circuit comes then, turned off between two output pins of U2, I/O_3 quilt
VCC sets height, thus the voltage over zero signal for the product for detecting control module 400 using single fiery switching circuit.
Embodiment seven
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, as shown in Fig. 2, in reality
On the basis of applying example four, the first rectification circuit 202, comprising: for the two or two to the secondary signal rectification for passing to mutual inductor 201
Pole pipe D2 and third diode D3, and for the first capacitor C1 and the second capacitor C2 to the signal filtering after rectification；
The anode of second diode D2 and third diode D3 is connect with the secondary of mutual inductor 201 respectively, the second diode
The cathode of D2 and third diode D3 are connect with two light emitting diode anodes in the first optocoupler 203 respectively；With second
The light emitting diode cathode of diode D2 cathode connection is connect with third diode D3 anode, is connect with third diode D3 cathode
Light emitting diode cathode connect with the second diode D2 anode, first capacitor C1 and the second capacitor C2 are parallel to the first light respectively
Two light emitting diode both ends in coupling device 203.
In the present embodiment, when relay module 100 is in opening state, city's electric signal is transferred to secondary by mutual inductor 201
Grade is rectified by the second diode D2 and third diode D3, then by first capacitor C1 and the second capacitor C2 to filter out high frequency miscellaneous
After wave, two light emitting diodes inside the first optocoupler 203 are connected in signal in turn, transfer signals to the first optocoupler
203 two pins, the two pins meet the I/O_2 and I/O_1 of control module 400 respectively, so that control module 400 be made to receive
To the current zero-crossing point signal for the product for using single fiery switching circuit.
Embodiment eight
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, as shown in figure 4, in reality
On the basis of applying example four, the first rectification circuit 202, comprising: for the secondary current signal rectifying and wave-filtering for passing to mutual inductor 201
The second diode D2 and third diode D3；
The anode of second diode D2 and third diode D3 is connect with the secondary of mutual inductor 201 respectively, third diode
D3 cathode is connected on the anode of the second diode D2 and the secondary connecting line of mutual inductor 201；Second diode D2 cathode connects
The light emitting diode anode in the first optocoupler 203 is connect, third diode D3 anode connects the hair in the first optocoupler 203
Optical diode cathode, the transistor collector link control module 400 in the first optocoupler 203, emitter ground connection.
The secondary zero crossing for only detecting city's electric signal positive wave of mutual inductor 201, outputs it to the first light in the present embodiment
After coupling device 203, the I/O_1 foot of control module 400 is transferred to by 203 1 output pins of the first optocoupler.
Embodiment nine
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, as shown in figure 3, in reality
On the basis of applying example six, the second rectification circuit 301, comprising:
Anode is connect with firewire inlet side mouthful, the 4th diode D4 that cathode is connect with the second optocoupler 302.
In the present embodiment, when relay module 100 is in opening state, city's electric signal is transferred to secondary by mutual inductor 201
Grade, after realizing halfwave rectifier by the 4th diode D4, city's electric signal passes sequentially through resistance R3, R4, R5 into the second optical coupler
Part 302 is transferred to two output pins of U2 by its internal photoelectric coupling, and one connects control mould in the two output pins
The I/O_3 pin of block 400, another ground connection.When zero crossing is come, turned off between two output pins of U2, I/O_3 passes through
Resistance R6 sets height by VCC, so that control module 400 be made to detect that the voltage over zero of the product using single fiery switching circuit is believed
Number.
Embodiment ten
The utility model embodiment provides a kind of single fiery switching circuit that relay zero-crossing is cut-off, as shown in figure 5, in reality
On the basis of applying example six, the second rectification circuit 301, comprising: full-wave rectifying circuit.
In the present embodiment, the second rectification circuit 301 uses full-wave bridge rectifier circuit BD1, and the second optocoupler 302 will letter
Number feedback is to an output pin, the base stage of the external driving triode Q2 of the output pin, the emitter of driving triode Q2 with
Another pin of second optocoupler 302 is grounded jointly.When zero crossing comes, two outputs of the second optocoupler 302
It is turned off between pin, the base stage of driving triode Q2 sets height, the emitter and current collection of driving triode Q2 by resistance R6 by VCC
After the conducting of pole, control module 400 obtains believing using the voltage zero-cross of the product of single fiery switching circuit by the signal that drags down of I/O_3
Number.
In single fiery switching circuit that relay zero-crossing provided by the embodiment of the utility model is cut-off, zero passage detection is divided into ON state
With the framework of OFF state both of which, each mode has a zero cross detection circuit to work, it is only necessary to very low power consumption
The zero passage switch movement for realizing relay module increases substantially the service life of the product using single fiery switching circuit.It is based on
Voltage over zero detection using the product of single fiery switching circuit carrys out switch relay module, extends relay module and uses the longevity
Life, while making the power consumption using the singly product of fiery switching circuit very low, the use switched when small load is not influenced.Pass through protection
Circuit realizes protection to the electric current service condition of entire single fiery switching circuit, when the electric current for being more than threshold value flows into single fiery switching circuit
When, protection circuit can cross thermal cutoff, to protect subsequent circuit.By ON state power-supply circuit and OFF state power-supply circuit respectively after
Obtain energy under two states of switch of electrical appliance module, output is exported stable straight from voltage regulator circuit to subsequent voltage regulator circuit
Galvanic electricity pressure is supplied to subsequent control module.City's electric signal is entered by firewire inlet side mouthful, and relay module is by control module control
System is cut-off, and when relay module is in opening state, city's electric signal is transferred to secondary by mutual inductor, passes through the first rectification circuit
After rectification, two light emitting diodes inside the first optocoupler are connected in signal in turn, transfer signals to the first optocoupler
Two pins, thus the current zero-crossing point signal for the product for receiving control module using single fiery switching circuit.Work as relay
When device module is in off state, city's electric signal enters the second optocoupler after passing through the second rectifier circuit rectifies, passes through inside
Photoelectric coupling be transferred to two output pins, one connects control module in the two output pins, another ground connection.Work as use
The voltage over zero of the product of single fire switching circuit comes then, turns off between two output pins, control module port is set by VCC
Height, thus the voltage over zero signal for the product for detecting control module using single fiery switching circuit.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. single fiery switching circuit that a kind of relay zero-crossing is cut-off characterized by comprising
Relay module, control module, the first zero cross detection circuit, the second zero cross detection circuit；
First zero cross detection circuit is used to collect the current zero-crossing signal when the relay module is in opening state,
And the current zero-crossing signal is exported to the control module；
Second zero cross detection circuit is used to collect the voltage zero-crossing signal when the relay module is in an off state,
And the voltage zero-crossing signal is exported to the control module；
The control module is used to calculate voltage over zero according to the current zero-crossing signal and the voltage zero-crossing signal, when
When the product progress power supply of non-zero points single fiery switching circuit described to application cut-offs operation, the control module automatic time delay to institute
Voltage over zero is stated the relay module is carried out to cut-off operation.
2. single fiery switching circuit that relay zero-crossing as described in claim 1 is cut-off, which is characterized in that further include:
It is connected between firewire inlet side mouthful and the relay module, the protection circuit of thermal cutoff is crossed when controller.
3. single fiery switching circuit that relay zero-crossing as described in claim 1 is cut-off, which is characterized in that further include:
The ON state power-supply circuit of energy is obtained under the relay module opening state；
The OFF state power-supply circuit of energy is obtained under the relay module off state.
4. single fiery switching circuit that relay zero-crossing a method according to any one of claims 1-3 is cut-off, which is characterized in that described first
Zero cross detection circuit, comprising:
It is connect with the relay module, city's electric signal that the relay module is entered by firewire inlet side mouthful is sent into first
The mutual inductor of optocoupler；
Be connected between the secondary of the mutual inductor and the first optocoupler, under the relay module opening state pass through institute
State the first rectification circuit that city's electric signal of mutual inductor is rectified；
It is connect with the control module, by the first optocoupler of the signal conduction of first rectification circuit output.
5. single fiery switching circuit that relay zero-crossing as claimed in claim 3 is cut-off, which is characterized in that the OFF state takes electric
Road includes: the first diode being connected between firewire exit port and first zero cross detection circuit, and with described first
The metal-oxide-semiconductor of diodes in parallel, the metal-oxide-semiconductor are also connected with the PWM port of the control module.
6. single fiery switching circuit that relay zero-crossing a method according to any one of claims 1-3 is cut-off, which is characterized in that described second
Zero cross detection circuit, comprising:
Mouthful connect with firewire inlet side, the of the second optocoupler is sent to after rectifying to city's electric signal by firewire inlet side mouth
Two rectification circuits；
It is connect with firewire exit port and the control module, the signal conduction exported by second rectification circuit, by signal
It is sent into the second optocoupler of the control module.
7. single fiery switching circuit that relay zero-crossing as claimed in claim 4 is cut-off, which is characterized in that first rectified current
Road, comprising: for the second diode and third diode to the secondary signal rectification for passing to the mutual inductor, and be used for
To the first capacitor and the second capacitor of the signal filtering after rectification；
The anode of second diode and the third diode is connect with the secondary of the mutual inductor respectively, and the described 2nd 2
The cathode of pole pipe and the third diode is connect with two light emitting diode anodes in first optocoupler respectively；With
The light emitting diode cathode of the second diode cathode connection is connect with the third diode cathode, with the three or two pole
The light emitting diode cathode of pipe cathode connection is connect with second diode cathode, the first capacitor and second capacitor
It is parallel to two light emitting diode both ends in first optocoupler respectively.
8. single fiery switching circuit that relay zero-crossing as claimed in claim 4 is cut-off, which is characterized in that first rectified current
Road, comprising: for the second diode and third diode to the secondary signal rectification filtering for passing to the mutual inductor；
The anode of second diode and the third diode is connect with the secondary of the mutual inductor respectively, and the described 3rd 2
Pole pipe cathode is connected on the anode of second diode and the secondary connecting line of the mutual inductor；Second diode
Cathode connects the anode of the light emitting diode in first optocoupler, and the third diode cathode connects first optocoupler
Light emitting diode cathode in device, the transistor collector in first optocoupler connect the control module, transmitting
Pole ground connection.
9. single fiery switching circuit that relay zero-crossing as claimed in claim 6 is cut-off, which is characterized in that second rectified current
Road, comprising:
Anode is connect with firewire inlet side mouthful, the 4th diode that cathode is connect with second optocoupler.
10. single fiery switching circuit that relay zero-crossing as claimed in claim 6 is cut-off, which is characterized in that second rectification
Circuit, comprising: full-wave rectifying circuit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018220263060 | 2018-12-04 | ||
| CN201822026306 | 2018-12-04 |
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| CN209447742U true CN209447742U (en) | 2019-09-27 |
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| CN201920036245.8U Active CN209447742U (en) | 2018-12-04 | 2019-01-09 | A kind of single fiery switching circuit that relay zero-crossing is cut-off |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112526199A (en) * | 2020-12-01 | 2021-03-19 | 广东鸿蓝智能科技有限公司 | Charging pile detection circuit capable of prolonging service life of relay and detection method thereof |
| CN113791342A (en) * | 2021-09-14 | 2021-12-14 | 公牛集团股份有限公司 | Switching device and electrical appliance |
-
2019
- 2019-01-09 CN CN201920036245.8U patent/CN209447742U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526199A (en) * | 2020-12-01 | 2021-03-19 | 广东鸿蓝智能科技有限公司 | Charging pile detection circuit capable of prolonging service life of relay and detection method thereof |
| CN113791342A (en) * | 2021-09-14 | 2021-12-14 | 公牛集团股份有限公司 | Switching device and electrical appliance |
| CN113791342B (en) * | 2021-09-14 | 2024-03-01 | 公牛集团股份有限公司 | Switching device and electric appliance |
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