CN201278518Y - Open state power supply circuit for electronic switch - Google Patents
Open state power supply circuit for electronic switch Download PDFInfo
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- CN201278518Y CN201278518Y CNU200820130784XU CN200820130784U CN201278518Y CN 201278518 Y CN201278518 Y CN 201278518Y CN U200820130784X U CNU200820130784X U CN U200820130784XU CN 200820130784 U CN200820130784 U CN 200820130784U CN 201278518 Y CN201278518 Y CN 201278518Y
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Abstract
The utility model discloses a technology for supplying power to an electronic circuit in the switching-on state of an electronic switch. The technology is characterized in that a charging circuit is connected in series with a trigger circuit of a master control thyristor; when the charging circuit charges the trigger circuit to a certain amplitude value, the charging circuit can automatically trigger the master control thyristor so that the master control thyristor can be connected; and the live wire end of a mater control circuit is connected with the power supply output grounding end, therefore, the electronic switch has small calorific value in the switching-on state, and power is stably supplied to the electronic circuit which has low trigger current and simple trigger circuit. The technology can be used for supplying power to the electronic circuit with multiposition electronic switches.
Description
Technical field
The utility model relates to a kind of power supply circuit technology of electronic switch.
Background technology
At present, several modes below the power supply of the electronic circuit of the great majority thyristor controlled electronic switch of employing under opening is adopted: a kind of is to adopt pressure circuit of series connection on main control loop, in order to control powerful load, this pressure circuit power just must be big especially, the big caloric value of power is just big, in addition, when the load of control different capacity, during particularly low power load, pressure drop on the pressure circuit is also different, cause the operating voltage fluctuation of electronic circuit under opening very big, job insecurity; Another kind is to adopt more advanced control principle to realize the powerup issue of electronic switch electronic circuit under opening, such circuit relative complex, such as or connect a power supply branch road prior to a master control controllable silicon conducting little phase angle in parallel at master control controllable silicon two ends, this power supply branch road the master control controllable silicon not during the little phase angle of conducting for the consumption of electronic circuit electric energy supplement and trigger the conducting of master control controllable silicon at the appropriate time, these circuit are not that trigger current is big, be exactly the circuits for triggering complexity, or the live wire end of main control loop do not link together with power supply output ground end, can not be used for the power supply of the electronic circuit of multi-channel electronic switch under opening.
Summary of the invention
The purpose of this utility model provides that a kind of little, the power electronics of switch caloric value is stable when opening, trigger current is little, circuits for triggering are simple, also can be used for the power supply circuit of multidigit electronic switch electronic switch of power electronics under opening.
The utility model is achieved through the following technical solutions.
A kind of power supply circuit of electronic switch is characterized in that triggering charging circuit of series connection in the loop at the master control silicon controlled, triggers the conducting of master control controllable silicon after being charged to certain amplitude automatically, and the live wire end of main control loop links together with power supply output ground end.
Described master control controllable silicon is a bidirectional triode thyristor, trigger the loop by one-way SCR, rectifier bridge, resistance R 1 and resistance R 2, voltage stabilizing didoe or bidirectional trigger diode or two voltage stabilizing didoe differential concatenations are formed, charging circuit comprises isolating diode, rectifier diode, the anode tap of described master control bidirectional triode thyristor, the load end of main control loop, one end of the interchange input of rectifier bridge all links to each other with OFF state power supply output, the cathode terminal of master control bidirectional triode thyristor, the live wire end of main control loop, one end of resistance R 2 all links to each other with power supply output ground end, the master control The Trigger of Bidirectional Triode Thyristor extremely links to each other with a end after voltage stabilizing didoe is connected in series with resistance R 1, resistance R 1 links to each other with the other end that exchanges input of rectifier bridge with the other end after voltage stabilizing didoe is connected in series, the direct current output plus terminal of rectifier bridge links to each other with the anode tap of one-way SCR, the direct current output negative terminal of rectifier bridge, the cathode terminal of one-way SCR all links to each other with the positive terminal of isolating diode, the triggering of one-way SCR extremely links to each other with the input of control signal, the negative pole end of isolating diode, the other end of resistance R 2 all links to each other with the positive terminal of rectifier diode, and the negative pole end of rectifier diode links to each other with ON state power supply output.
Described master control controllable silicon is a bidirectional triode thyristor, trigger the loop by one-way SCR, rectifier bridge, resistance R 1 and resistance R 2, voltage stabilizing didoe or bidirectional trigger diode or two voltage stabilizing didoe differential concatenations are formed, charging circuit is made of rectifier diode, the anode tap of described master control bidirectional triode thyristor, the load end of main control loop, one end of the interchange input of rectifier bridge all links to each other with OFF state power supply output, the cathode terminal of master control bidirectional triode thyristor, the live wire end of main control loop, one end of resistance R 2 all links to each other with power supply output ground end, the master control The Trigger of Bidirectional Triode Thyristor extremely links to each other with a end after voltage stabilizing didoe is connected in series with resistance R 1, the other end after resistance R 1 and voltage stabilizing didoe are connected in series, the other end of resistance R 2, the other end of the interchange input of rectifier bridge all links to each other with the positive terminal of rectifier diode, the direct current output plus terminal of rectifier bridge links to each other with the anode tap of one-way SCR, the direct current output negative terminal of rectifier bridge links to each other with the cathode terminal of one-way SCR, the triggering of one-way SCR extremely links to each other with the input of control signal, and the negative pole end of rectifier diode links to each other with ON state power supply output.
The utility model compared with prior art has the following advantages:
The utility model is because of having adopted above-mentioned triggering loop and charging circuit, so just avoided the electronic switch caloric value that pressure circuit of series connection brings on main control loop big, the big problem of operating voltage fluctuation of electronic circuit, simultaneously because of adopting one-way SCR to trigger control element as the master control silicon controlled, so just little as the trigger current that the master control silicon controlled triggers control element than adopting bidirectional triode thyristor output photoelectrical coupler, also simple as the circuits for triggering that the master control silicon controlled triggers control element than adopting bidirectional triode thyristor, live wire end because of main control loop links to each other with power supply output ground end in addition, has avoided prior art can not be used for the powerup issue of multi-channel electronic switch electronic circuit under opening.
Description of drawings
Fig. 1 is first kind of embodiment of the present utility model;
Fig. 2 is second kind of embodiment of the present utility model;
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, described master control controllable silicon is bidirectional triode thyristor T, trigger the loop by unidirectional controllable silicon S CR, rectifier bridge BR, resistance R 1 and resistance R 2, voltage stabilizing didoe Z or bidirectional trigger diode or two voltage stabilizing didoe differential concatenations are formed, charging circuit comprises isolating diode D2, rectifier diode D1, the anode tap of described master control bidirectional triode thyristor T, the load end A of main control loop, one end of the interchange input of rectifier bridge BR all links to each other with OFF state power supply output VDD1, the cathode terminal of master control bidirectional triode thyristor T, the live wire end L of main control loop, one end of resistance R 2 all links to each other with power supply output ground end GND, the triggering of master control bidirectional triode thyristor T extremely links to each other with a end after voltage stabilizing didoe Z is connected in series with resistance R 1, resistance R 1 links to each other with the other end that exchanges input of rectifier bridge BR with the other end after voltage stabilizing didoe Z is connected in series, the direct current output plus terminal of rectifier bridge BR links to each other with the anode tap of unidirectional controllable silicon S CR, the direct current output negative terminal of rectifier bridge BR, the cathode terminal of unidirectional controllable silicon S CR all links to each other with the positive terminal of isolating diode D2, the triggering of unidirectional controllable silicon S CR extremely links to each other with the input S of control signal, the negative pole end of isolating diode D2, the other end of resistance R 2 all links to each other with the positive terminal of rectifier diode D1, and the negative pole end of rectifier diode D1 links to each other with ON state power supply output VDD2.
Present embodiment is the power supply that realizes electronic switch electronic circuit under opening like this, when the input S of control signal input control voltage, this control voltage is extreme through the triggering of unidirectional controllable silicon S CR, the cathode terminal of unidirectional controllable silicon S CR, isolating diode D2 and resistance R 2 form the loop, unidirectional controllable silicon S CR conducting, positive half wave at the main control loop alternating voltage, the voltage of main control loop is through one tunnel a end after being added in resistance R 1 and voltage stabilizing didoe Z and being connected in series behind rectifier bridge BR and the unidirectional controllable silicon S CR, and after the triggering of master control bidirectional triode thyristor T is extreme, form the loop, but just begin, main control loop voltage is too little, master control bidirectional triode thyristor T can conducting, another road is behind isolating diode D2 and rectifier diode D1, VDD2 supplies with the electronic circuit operating voltage from ON state power supply output, rising along with main control loop voltage, the voltage of the negative pole end of voltage stabilizing didoe Z is also rising, after this magnitude of voltage is raised to voltage stabilizing value above voltage stabilizing didoe Z, voltage stabilizing didoe Z reverse-conducting, master control bidirectional triode thyristor T conducting, ON state power supply output VDD2 stops to power electronics, process on the positive half wave of next alternating voltage repeats, thus realized the automatic purpose that triggers master control bidirectional triode thyristor T conducting when being charged to certain amplitude for electronic circuit.
As shown in Figure 2, described master control controllable silicon is bidirectional triode thyristor T, trigger the loop by unidirectional controllable silicon S CR, rectifier bridge BR, resistance R 1 and resistance R 2, voltage stabilizing didoe Z or bidirectional trigger diode or two voltage stabilizing didoe differential concatenations are formed, charging circuit is made of rectifier diode D, the anode tap of described master control bidirectional triode thyristor T, the load end A of main control loop, one end of the interchange input of rectifier bridge BR all links to each other with OFF state power supply output VDD1, the cathode terminal of master control bidirectional triode thyristor T, the live wire end L of main control loop, one end of resistance R 2 all links to each other with power supply output ground end GND, the triggering of master control bidirectional triode thyristor T extremely links to each other with a end after voltage stabilizing didoe Z is connected in series with resistance R 1, the other end after resistance R 1 and voltage stabilizing didoe Z are connected in series, the other end of resistance R 2, the other end of the interchange input of rectifier bridge BR all links to each other with the positive terminal of rectifier diode D, the direct current output plus terminal of rectifier bridge BR links to each other with the anode tap of unidirectional controllable silicon S CR, the direct current output negative terminal of rectifier bridge BR links to each other with the cathode terminal of unidirectional controllable silicon S CR, the triggering of unidirectional controllable silicon S CR extremely links to each other with the input S of control signal, and the negative pole end of rectifier diode D links to each other with ON state power supply output VDD2.
Claims (3)
1. the power supply circuit of an electronic switch, it is characterized in that: trigger charging circuit of series connection in the loop at the master control silicon controlled, automatically trigger the conducting of master control controllable silicon after being charged to certain amplitude, the live wire end of main control loop links together with power supply output ground end.
2. the power supply circuit of a kind of electronic switch according to claim 1, it is characterized in that: described master control controllable silicon is a bidirectional triode thyristor, trigger the loop by one-way SCR, rectifier bridge, resistance (R1) and resistance (R2), voltage stabilizing didoe or bidirectional trigger diode or two voltage stabilizing didoe differential concatenations are formed, charging circuit comprises isolating diode, rectifier diode, the anode tap of described master control bidirectional triode thyristor, the load end of main control loop, one end of the interchange input of rectifier bridge all links to each other with OFF state power supply output, the cathode terminal of master control bidirectional triode thyristor, the live wire end of main control loop, one end of resistance (R2) all links to each other with power supply output ground end, the master control The Trigger of Bidirectional Triode Thyristor extremely links to each other with a end after voltage stabilizing didoe is connected in series with resistance (R1), resistance (R1) links to each other with the other end that exchanges input of rectifier bridge with the other end after voltage stabilizing didoe is connected in series, the direct current output plus terminal of rectifier bridge links to each other with the anode tap of one-way SCR, the direct current output negative terminal of rectifier bridge, the cathode terminal of one-way SCR all links to each other with the positive terminal of isolating diode, the triggering of one-way SCR extremely links to each other with the input of control signal, the negative pole end of isolating diode, the other end of resistance (R2) all links to each other with the positive terminal of rectifier diode, and the negative pole end of rectifier diode links to each other with ON state power supply output.
3. the power supply circuit of a kind of electronic switch according to claim 1, it is characterized in that: described master control controllable silicon is a bidirectional triode thyristor, trigger the loop by one-way SCR, rectifier bridge, resistance (R1) and resistance (R2), voltage stabilizing didoe or bidirectional trigger diode or two voltage stabilizing didoe differential concatenations are formed, charging circuit is made of rectifier diode, the anode tap of described master control bidirectional triode thyristor, the load end of main control loop, one end of the interchange input of rectifier bridge all links to each other with OFF state power supply output, the cathode terminal of master control bidirectional triode thyristor, the live wire end of main control loop, one end of resistance (R2) all links to each other with power supply output ground end, the master control The Trigger of Bidirectional Triode Thyristor extremely links to each other with a end after voltage stabilizing didoe is connected in series with resistance (R1), the other end after resistance (R1) and voltage stabilizing didoe are connected in series, the other end of resistance (R2), the other end of the interchange input of rectifier bridge all links to each other with the positive terminal of rectifier diode, the direct current output plus terminal of rectifier bridge links to each other with the anode tap of one-way SCR, the direct current output negative terminal of rectifier bridge links to each other with the cathode terminal of one-way SCR, the triggering of one-way SCR extremely links to each other with the input of control signal, and the negative pole end of rectifier diode links to each other with ON state power supply output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820130784XU CN201278518Y (en) | 2008-07-24 | 2008-07-24 | Open state power supply circuit for electronic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820130784XU CN201278518Y (en) | 2008-07-24 | 2008-07-24 | Open state power supply circuit for electronic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201278518Y true CN201278518Y (en) | 2009-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820130784XU Expired - Fee Related CN201278518Y (en) | 2008-07-24 | 2008-07-24 | Open state power supply circuit for electronic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201278518Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018615A (en) * | 2017-05-31 | 2017-08-04 | 田涛 | A kind of electronic switch of micro-current control |
-
2008
- 2008-07-24 CN CNU200820130784XU patent/CN201278518Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018615A (en) * | 2017-05-31 | 2017-08-04 | 田涛 | A kind of electronic switch of micro-current control |
| CN107018615B (en) * | 2017-05-31 | 2024-01-30 | 惠州祺瑞电工有限公司 | Micro-current controlled electronic switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20140724 |
|
| EXPY | Termination of patent right or utility model |