CN207381320U - Magnetic latching relay acts accelerating circuit - Google Patents
Magnetic latching relay acts accelerating circuit Download PDFInfo
- Publication number
- CN207381320U CN207381320U CN201721348143.7U CN201721348143U CN207381320U CN 207381320 U CN207381320 U CN 207381320U CN 201721348143 U CN201721348143 U CN 201721348143U CN 207381320 U CN207381320 U CN 207381320U
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- Prior art keywords
- circuit
- magnetic latching
- driving
- latching relay
- control unit
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Abstract
A kind of magnetic latching relay acts accelerating circuit, power supply unit, the control unit for output drive signal and non-capacitive driving unit including being used to provide default supply voltage, the driving unit is connected with the power supply unit and described control unit, and the driving unit drives whether the coil of the relay connects the default supply voltage under the driving letter control.By the driving circuit of the power supply supply magnetic latching relay after voltage stabilizing, magnetic latching relay can be broken or connected by control unit, actuation time is accelerated by 20 milliseconds of traditional silicon-controlled scheme as 4 milliseconds, with the shortening of actuation time, the each action error of single magnetic latching relay also reduces therewith, it is final to provide possibility without silicon-controlled combination switch to realize so as to ensure that uniformity.
Description
Technical field
The utility model belongs to power electronics field more particularly to a kind of magnetic latching relay action accelerating circuit.
Background technology
, it is necessary to which electronic power switch carrys out switching power capacitor in reactive compensation switch cabinet, and magnetic latching relay is non-
Often it is suitable as this kind of switch.Low-voltage combination switch is planted the silicon-controlled electronic power switch in parallel with magnetic latching relay.
It being controlled by internal microcontroller, operating passing zero is undertaken by silicon-controlled in the moment for putting into and cutting off, i.e. the voltage zero-cross moment puts into,
The current over-zero moment cuts off, and the controlled silicon conducting time is very short (not generating fever), afterwards, is converted to magnetic latching relay and connects fortune
Row.
In the more harsh occasion of some work condition environments, such as the more serious occasion of system harmonics, low-voltage combination switch
It is silicon-controlled may be easily damaged, in order to protect it is silicon-controlled also need to increase protection circuit, so being answered without silicon-controlled low pressure
Combination switch is into a kind of trend, this just needs magnetic latching relay that can accurately be put into voltage over zero, and current zero-crossing point is accurate
Definitely remove, that is, need magnetic latching relay action will being consistent property, and test prove shorten magnetic latching relay action
Time ensures that the uniformity acted every time, meets the needs of operating passing zero.
Utility model content
The purpose of this utility model provides a kind of silicon-controlled magnetic that can guarantee each action consistency of relay of omission and keeps
Action accelerating circuit of electrical relay is low, it is necessary to increase protection electricity to solve silicon-controlled reliability present in traditional technical solution
Road causes the problem of of high cost.
A kind of magnetic latching relay acts accelerating circuit, including being used to provide the power supply unit of default supply voltage, be used for
The control unit of output drive signal and non-capacitive driving unit；The driving unit and the power supply unit and the control
Unit connects, and the driving unit drives whether the coil of the relay connects the default electricity under the driving letter control
Source voltage.
The power supply unit includes the transformer of primary coil connection alternating current, the secondary wire of the input termination transformer
It is the rectifier of circle, the power-fail detection circuit being connected with the rectifier output end and described control unit, defeated with the rectifier
The accumulator and regulator circuit that is in parallel with the accumulator and exporting the default supply voltage of outlet connection.
Preferably, the power-fail detection circuit includes first resistor, second resistance and the first diode, the first resistor
The anode of the one termination rectifier, it is another to terminate described control unit and be grounded by the second resistance, the described 1st
The anode of pole pipe connects the anode of the rectifier, and cathode connects the accumulator.
Preferably, the regulator circuit includes 3rd resistor, three pole of the first capacitance, a zener diode and the first NPN types
Pipe, one end of the 3rd resistor, the cathode of the zener diode and the NPN type were connected in one end of first capacitance
The base stage of triode, the plus earth of the zener diode；The other end of the 3rd resistor and three pole of the first NPN type
The collector of pipe connects the cathode of first diode；The emitter of first NPN type triode is as the regulator circuit
Output terminal.
Preferably, the accumulator include the first storage capacitor and the second storage capacitor, first storage capacitor with
The input side of the regulator circuit is in parallel, and second storage capacitor is in parallel with the outlet side of the regulator circuit.
Preferably, the driving unit includes：
It is connected with described control unit and the power supply unit, accesses the driving circuit of two drive signals；
Be connected with the driving circuit, the coil of the relay and the power supply unit connection recommend full-bridge circuit；
Four are recommended the fly-wheel diode that four driving switch difference are in parallel in full-bridge circuit with described.
Preferably, the driving circuit includes the first current-limiting resistance, the second current-limiting resistance, the 3rd current-limiting resistance, the 4th limit
Leakage resistance, the second NPN type triode and the 3rd NPN type triode；
The base stage of second NPN type triode is connected by the first current-limiting resistance with described control unit, collector with
It is described to recommend the connection of full-bridge circuit two of which driving switch, and pass through second current-limiting resistance and connect with the power supply unit
It connects, emitter ground connection；
The base stage of 3rd NPN type triode is connected by the 3rd current-limiting resistance with described control unit, collector with
It is described to recommend full-bridge circuit other two driving switch connection, and pass through the 4th current-limiting resistance and connect with the power supply unit
It connects, emitter ground connection.
Preferably, described control unit is microcontroller.
Above-mentioned magnetic latching relay action accelerating circuit is electric by the driving of the power supply supply magnetic latching relay after voltage stabilizing
Road, can be broken or be connected magnetic latching relay by control unit, actuation time by traditional silicon-controlled scheme 20 millis
Second accelerates as 4 milliseconds, and with the shortening of actuation time, each action error of single magnetic latching relay also reduces therewith, from
And ensure that uniformity, it is final to provide possibility without silicon-controlled combination switch to realize.
Description of the drawings
Fig. 1 is that magnetic latching relay acts accelerating circuit structure diagram in the utility model embodiment；
Fig. 2 is the Example Principles figure that magnetic latching relay shown in FIG. 1 acts power supply unit in accelerating circuit；
Fig. 3 is that the utility model controls reversible transducer to be operated in the signal timing diagram under Boost states.
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, is further elaborated the utility model.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.
Referring to Fig. 1, the magnetic latching relay action accelerating circuit in the utility model preferred embodiment includes carrying
For presetting power supply unit 100, the control unit 200 for output drive signal and the non-capacitive driving list of supply voltage IN
Member 300；The driving unit 300 is connected with the power supply unit 100 and described control unit 200, and the driving unit 300 exists
Whether the coil 400 of the driving letter control lower driving relay connects the default supply voltage IN.Preferably, institute
Control unit 200 is stated as microcontroller.
Referring to Fig. 2, the power supply unit 100 includes the transformer T1 of primary coil connection alternating current, input termination institute
It states the rectifier BG of the secondary coil of transformer T1, with what the rectifier BG output terminals and described control unit 200 were connected
Power detection circuit 101, with accumulator that the rectifier BG output terminals are connected and in parallel with the accumulator and export
The regulator circuit 102 of the default supply voltage IN.In the present embodiment, transformer T1 is Industrial Frequency Transformer, and 220V is become
40V。
Preferably, the power-fail detection circuit 101 includes first resistor R1, second resistance R2 and the first diode D1, institute
The anode that first resistor R1 mono- terminates the rectifier BG is stated, it is another to terminate described control unit 200 and pass through the described second electricity
R2 ground connection is hindered, the anode of the first diode D1 connects the anode of the rectifier BG, and cathode connects the accumulator.Work as power supply
After power down control unit 200 is notified to break magnetic latching relay.
Preferably, the regulator circuit 102 includes 3rd resistor R3, the first capacitance C1, a zener diode ZD1 and first
One end of the 3rd resistor R3, the zener diode were connected in NPN type triode Q1, one end of the first capacitance C1
The base stage of the cathode of ZD1 and the NPN type triode Q1, the plus earth of the zener diode ZD1；The 3rd resistor R3
The other end and the collector of the first NPN type triodes Q1 connect the cathode of first diode；First NPN type
Output terminal of the emitter of triode Q1 as the regulator circuit 102.
Preferably, the accumulator has energy to break magnetic latching relay after power supply power-fail；Including the first energy storage electricity
Holding E1 and the second storage capacitor E2, the first storage capacitor E1 is in parallel with the input side of the regulator circuit 102, and described the
Two storage capacitor E2 are in parallel with the outlet side of the regulator circuit 102.First storage capacitor E1 and the second storage capacitor E2 is electricity
Solve capacitance, more than capacity 1000uF.
Referring to Fig. 3, the driving unit 300 includes driving circuit 301, recommends full-bridge circuit 302 and four afterflows two
Pole pipe D11/D12/D13/D14.
Driving circuit 301 is connected with described control unit 200 and the power supply unit 100, the driving letter of access two
Number B+/B-；Recommend full-bridge circuit 302 be connected with the driving circuit 301, the coil of the relay 400 and the power supply list
100 connection of member；Four sustained diode 11/D12/D13/D14 recommend four driving switch in full-bridge circuit 302 with described
Q11/Q12/Q13/Q14 difference parallel connections.
Preferably, the driving circuit 301 includes the first current-limiting resistance R11, the second current-limiting resistance R12, the 3rd current limliting electricity
Hinder R13, the 4th current-limiting resistance R14, the second NPN type triode Q2 and the 3rd NPN type triode Q3；
The base stage of the second NPN type triode Q2 is connected by the first current-limiting resistance R11 with described control unit 200,
The collector of the second NPN type triode Q2 recommends 302 two of which driving switch Q11/Q12 of full-bridge circuit companies with described
It connects, the collector of the second NPN type triode Q2 simultaneously passes through the second current-limiting resistance R12 and connects with the power supply unit 100
It connects, the emitter ground connection of the second NPN type triode Q2；
The base stage of the 3rd NPN type triode Q3 is connected by the 3rd current-limiting resistance R13 with described control unit 200,
The collector of the 3rd NPN type triode Q3 recommends other two driving switch of full-bridge circuit 302 Q13/Q14 companies with described
It connects, the collector of the 3rd NPN type triode Q3 simultaneously passes through the 4th current-limiting resistance R14 and connects with the power supply unit 100
It connects, the emitter ground connection of the 3rd NPN type triode Q3.
Above-mentioned magnetic latching relay action accelerating circuit is electric by the driving of the power supply supply magnetic latching relay after voltage stabilizing
Road 301 can be broken or be connected magnetic latching relay by control unit 200, and actuation time is by traditional silicon-controlled scheme
20 milliseconds accelerate as 4 milliseconds, with the shortening of actuation time, each action error of single magnetic latching relay also subtracts therewith
It is small, it is final to provide possibility without silicon-controlled combination switch to realize so as to ensure that uniformity.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (7)
1. a kind of magnetic latching relay acts accelerating circuit, which is characterized in that the power supply including being used to provide default supply voltage
Unit, the control unit for output drive signal and non-capacitive driving unit；The driving unit and the power supply unit
It is connected with described control unit, the driving unit drives whether the coil of the relay is connected under the driving letter control
The default supply voltage；
Transformer of the power supply unit including primary coil connection alternating current, input terminate the secondary coil of the transformer
Rectifier, the power-fail detection circuit being connected with the rectifier output end and described control unit and the rectifier output end
The accumulator of connection and regulator circuit that is in parallel with the accumulator and exporting the default supply voltage.
2. magnetic latching relay as described in claim 1 acts accelerating circuit, which is characterized in that the power-fail detection circuit bag
First resistor, second resistance and the first diode are included, the first resistor one terminates the anode of the rectifier, another termination institute
It states control unit and is grounded by the second resistance, the anode of first diode connects the anode of the rectifier, cathode
Connect the accumulator.
3. magnetic latching relay as claimed in claim 2 acts accelerating circuit, which is characterized in that the regulator circuit includes the
Three resistance, the first capacitance, a zener diode and the first NPN type triode, one end of first capacitance connected described
The base stage of one end of three resistance, the cathode of the zener diode and the NPN type triode, the anode of the zener diode
Ground connection；The other end of the 3rd resistor and the collector of first NPN type triode connect the cathode of first diode；
Output terminal of the emitter of first NPN type triode as the regulator circuit.
4. the magnetic latching relay action accelerating circuit as described in claim 1,2 or 3, which is characterized in that the accumulator
Including the first storage capacitor and the second storage capacitor, first storage capacitor is in parallel with the input side of the regulator circuit, institute
The outlet side that the second storage capacitor is stated with the regulator circuit is in parallel.
5. magnetic latching relay as described in claim 1 acts accelerating circuit, which is characterized in that the driving unit includes：
It is connected with described control unit and the power supply unit, accesses the driving circuit of two drive signals；
Be connected with the driving circuit, the coil of the relay and the power supply unit connection recommend full-bridge circuit；
Four are recommended the fly-wheel diode that four driving switch difference are in parallel in full-bridge circuit with described.
6. magnetic latching relay as claimed in claim 5 acts accelerating circuit, which is characterized in that the driving circuit includes the
One current-limiting resistance, the second current-limiting resistance, the 3rd current-limiting resistance, the 4th current-limiting resistance, the second NPN type triode and the 3rd NPN type
Triode；
The base stage of second NPN type triode is connected by the first current-limiting resistance with described control unit, collector with it is described
The connection of full-bridge circuit two of which driving switch is recommended, and passes through second current-limiting resistance and is connected with the power supply unit, is sent out
Emitter grounding；
The base stage of 3rd NPN type triode is connected by the 3rd current-limiting resistance with described control unit, collector with it is described
Full-bridge circuit other two driving switch connection is recommended, and passes through the 4th current-limiting resistance and is connected with the power supply unit, is sent out
Emitter grounding.
7. magnetic latching relay as described in claim 1 acts accelerating circuit, which is characterized in that described control unit is monolithic
Machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721348143.7U CN207381320U (en) | 2017-10-18 | 2017-10-18 | Magnetic latching relay acts accelerating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721348143.7U CN207381320U (en) | 2017-10-18 | 2017-10-18 | Magnetic latching relay acts accelerating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207381320U true CN207381320U (en) | 2018-05-18 |
Family
ID=62339646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721348143.7U Expired - Fee Related CN207381320U (en) | 2017-10-18 | 2017-10-18 | Magnetic latching relay acts accelerating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207381320U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109859989A (en) * | 2019-03-28 | 2019-06-07 | 衡阳泰豪通信车辆有限公司 | A kind of drive control circuit of magnetic latching relay |
-
2017
- 2017-10-18 CN CN201721348143.7U patent/CN207381320U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109859989A (en) * | 2019-03-28 | 2019-06-07 | 衡阳泰豪通信车辆有限公司 | A kind of drive control circuit of magnetic latching relay |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180518 Termination date: 20181018 |