CN2793906Y - Driving circuit of AC contactor - Google Patents
Driving circuit of AC contactor Download PDFInfo
- Publication number
- CN2793906Y CN2793906Y CN 200520016223 CN200520016223U CN2793906Y CN 2793906 Y CN2793906 Y CN 2793906Y CN 200520016223 CN200520016223 CN 200520016223 CN 200520016223 U CN200520016223 U CN 200520016223U CN 2793906 Y CN2793906 Y CN 2793906Y
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- communicated
- contactor
- diode
- resistance
- binding post
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Abstract
The utility model relates to a driving circuit of an AC contactor, which is composed of a driving circuit and a direct current micro power consumption holding circuit which are communicated with each other, wherein the two circuits simultaneously supply electric power for an AC contactor coil when energized. The driving circuit just provides great current at the moment of energizing to cause an iron core of the AC contactor to be attracted so as to automatically cut off the electricity. The holding circuit continuously supplies electric power for the contactor to keep the energy saving operation. The utility model can be combined with the direct current micro power consumption holding circuits of multiple forms without changing the applied circuit and structure of the AC contactor, and can simply and conveniently reform the popular type AC contactor into an energy saving type AC contactor with the unchanged use condition and performance, so the utility model can be widely used in electrical supply equipment and can enhance the power of the electric network with a great number of enforcements.
Description
Technical field
The utility model relates to the A.C. contactor drive circuit.
Background technology
A.C. contactor is widely used a kind of automatically controlled device in the power supply unit, and existing A.C. contactor is after the startup action is finished, and solenoid still need be switched on and be kept the adhesive of iron core.In routine was used, because most of energy loss of solenoid institute indirect current stream is on magnetic hysteresis, eddy current and short-circuited conducting sleeve, the meritorious power consumption on the coil also major part became thermal loss and falls, and with noise and vibration.And a large amount of uses of this conventional AC contactor also are key factors that causes power supply network power to descend.
In order to address this problem, once propose the little power consumption of many ac contactor coil direct currents in the past and kept the circuit arrangement of operation, but all the connection problem because of driving and holding circuit has caused concrete application circuit complexity, maybe must change, thereby be not suitable for applying on a large scale the structure of A.C. contactor itself.
Summary of the invention
The purpose of this utility model provides a kind of novel A.C. contactor drive circuit.This circuit drives A.C. contactor and the linking of holding circuit is oversimplified, and makes the energy-conservation of consumption reduction scheme of A.C. contactor easy to implement.
Basic functional principle of the present utility model is: drive circuit and the little power consumption holding circuit of direct current are connected, and two circuit are powered to ac contactor coil simultaneously during energising.Drive circuit just energising big electric current is provided in a flash, make the adhesive of A.C. contactor iron core, outage voluntarily then, contactor continues power supply by holding circuit, keeps energy-saving run.
Drive circuit of the present utility model comprises diode D1, resistance R 1; R2; R3, capacitor C 1; C2, triode VT, diac VD, thyristor VS, binding post A1; A2, drive current terminal B1; B2; The positive pole of diode D1 is communicated with binding post A1 and drive current terminal B1, negative pole is communicated with an end of resistance R 1 and resistance R 3, the surplus end of resistance R 1 is communicated with an end of resistance R 2, the positive pole that is communicated with capacitor C 1, the base stage that is communicated with triode VT, the surplus end of resistance R 3 is communicated with an end of capacitor C 2, is communicated with the collector electrode of triode VT, is communicated with the end of diac VD, the surplus end of resistance R 2, the negative pole of capacitor C 1, the emitter of triode VT, the surplus end of capacitor C 2, all be communicated with binding post A2, the end of thyristor VS is communicated with binding post A2, and the other end is communicated with drive current terminal B2, and the trigger electrode of thyristor VS is communicated with the surplus end of diac VD; Binding post A1 and binding post A2 are communicated with AC power.
Holding circuit of the present utility model comprises diode D2; D3; D4; D5, capacitor C 3; The negative pole of diode D2 and diode D3 is communicated with drive current terminal B1, the positive pole of diode D4 and diode D5 is communicated with drive current terminal B2, the negative pole that the positive pole of diode D2 is communicated with diode D4 is communicated with binding post A1 again, the negative pole of the positive pole connection diode D5 of diode D3 is communicated with the end of thyristor VS again, capacitor C 3 is connected in parallel with thyristor VS, and drive current terminal B1 is connected with the two ends of ac contactor coil CJ respectively with drive current terminal B2.
The utility model is when the energising beginning, and because of electric capacity is in the charging stage, voltage is very low, triode ends, and internal resistance is very big, is equivalent to open circuit, the trigger operate as normal, trigger the thyristor conducting, provide to drive big electric current, drive the adhesive of contactor iron core, increase in time, the electric capacity both end voltage rises, when satisfying the triode turn-on condition, and the triode conducting, and keep conducting state always, at this moment triode internal resistance is very little, is equivalent to short circuit, and trigger lost efficacy, thyristor ends, stop power supply, finish the driving task, holding circuit makes the contactor energy-saving operation.
The utility model does not need to change the application circuit and the structure of A.C. contactor, just can combine with the little power consumption holding circuit of the direct current of various ways, simply and easily the plain edition A.C. contactor is transformed into service condition and the constant energy-saving alternating current contactor of performance, can be widely used in the power supply unit, a large amount of enforcements can improve grid power.
Description of drawings
Accompanying drawing 1 is circuit theory diagrams of the present utility model
Accompanying drawing 2 is the circuit diagram of the utility model embodiment
Embodiment
Below in conjunction with accompanying drawing, embodiment describes to the utility model:
With reference to the accompanying drawings 1,2, the drive circuit of the utility model embodiment comprises diode D1, resistance R 1; R2; R3, capacitor C 1; C2, triode VT, diac VD, thyristor VS, binding post A1; A2, drive current terminal B1; B2; The positive pole of diode D1 is communicated with binding post A1 and drive current terminal B1, negative pole is communicated with an end of resistance R 1 and resistance R 3, the surplus end of resistance R 1 is communicated with an end of resistance R 2, the positive pole that is communicated with capacitor C 1, the base stage that is communicated with triode VT, the surplus end of resistance R 3 is communicated with an end of capacitor C 2, is communicated with the collector electrode of triode VT, is communicated with the end of diac VD, the surplus end of resistance R 2, the negative pole of capacitor C 1, the emitter of triode VT, the surplus end of capacitor C 2, all be communicated with binding post A2, the end of thyristor VS is communicated with binding post A2, and the other end is communicated with drive current terminal B2, and the trigger electrode of thyristor VS is communicated with the surplus end of diac VD; Binding post A1 and binding post A2 are communicated with AC power.
When giving binding post A1, A2 for alternating current, by rectifier diode D1, resistance R 1 and resistance R 2 electric current is arranged simultaneously, because of capacitor C 1 is in the charging stage, the voltage rising of starting from scratch, triode VT base voltage is very low, do not reach turn-on condition, triode VT ends, and internal resistance is very big, be equivalent to open circuit, at this moment the trigger operate as normal of being made up of resistance R 3, capacitor C 2 and diac VD triggers thyristor VS conducting, and circuit is by drive current terminal B1, B2 output driving current.Along with increasing conduction time, capacitor C 1 constantly charge, when capacitor C 1 both end voltage during greater than 0.7V, reaches triode VT turn-on condition, triode VT conducting, and maintenance conducting.Internal resistance this moment is very little, is equivalent to short circuit, and trigger lost efficacy, and triggering signal disappears, and thyristor VS ends, and drive current disappears, and finishes the driving task.The main effect of resistance R 2 is when power supply is stopped power supply, and gives capacitor C 1 discharge, in order to driving next time.
With reference to the accompanying drawings 2, the holding circuit of the utility model embodiment comprises diode D2; D3; D4; D5, capacitor C 3; The negative pole of diode D2 and diode D3 is communicated with drive current terminal B1, the positive pole of diode D4 and diode D5 is communicated with drive current terminal B2, the negative pole that the positive pole of diode D2 is communicated with diode D4 is communicated with binding post A1 again, the negative pole of the positive pole connection diode D5 of diode D3 is communicated with the end of thyristor VS again, capacitor C 3 is connected in parallel with thyristor VS, and drive current terminal B1 is connected with the two ends of ac contactor coil CJ respectively with drive current terminal B2.
Four diode D2; D3; D4; D5, be connected into bridge rectifier, capacitor C 3 is current limiting elements, binding post B1, B2 is connected with ac contactor coil CJ, form the little power consumption holding circuit of direct current commonly used, thyristor VS in the drive circuit is in parallel with current limiting capacitance C3, to drive with holding circuit and combine, two circuit powers are taken at binding post A1 altogether, A2, drive current terminal B1, B2 supplies with ac contactor coil and drives and holding current, at this moment binding post A1, A2 has promptly substituted the binding post of former ac contactor coil, simply and easily the plain edition A.C. contactor has been transformed into the constant energy-saving contactor of service condition and performance.
Subordinate list has been listed model, the parameter of each components and parts, is at the CJ10-20A coil, and control voltage is the A.C. contactor of AC220V, can use in any control loop of AC220V.
Change the parameter of components and parts, applicable to any A.C. contactor.
Subordinate list:
The utility model embodiment components and parts model parameter list
| The element title | Mark | Model or parameter |
| Resistance | R1 | 1.5MΩ 1/4W |
| Resistance | R2 | 43KΩ 1/4W |
| Resistance | R3 | 1.2MΩ 1/4W |
| Electric capacity | C1 | 10μF 50V |
| Electric capacity | C2 | 4700PF 63V |
| Electric capacity | C3 | 0.47μF 630V |
| Diode | D1 | 1A 600V |
| Diode | D2 | 6A 600V |
| Diode | D3 | 6A 600V |
| Diode | D4 | 6A 600V |
| Diode | D5 | 6A 600V |
| Diac | VD | DB3 |
| Triode | VT | 2SC1815 60V β80～100 |
| Thyristor | VS | The two-way 6A 600V of BT136 |
| Binding post | A1 | 5A 500V |
| Binding post | A2 | 5A 500V |
| Binding post | B1 | 5A 500V |
| Binding post | B2 | 5A 500V |
| Contactor coil | CJ | CT10-20A AC220V |
Claims (2)
1. an A.C. contactor drive circuit is characterized in that: comprise diode (D1), resistance (R1; R2; R3), electric capacity (C1; C2), triode (VT), diac (VD), thyristor (VS), binding post (A1; A2), drive current terminal (B1; B2); The positive pole of diode (D1) is communicated with binding post (A1) and drive current terminal (B1), negative pole is communicated with an end of resistance (R1) and resistance (R3), the surplus end of resistance (R1) is communicated with an end of resistance (R2), the positive pole that is communicated with electric capacity (C1), the base stage that is communicated with triode (VT), the surplus end of resistance (R3) is communicated with an end of electric capacity (C2), the collector electrode that is communicated with triode (VT), an end that is communicated with diac (VD), the surplus end of resistance (R2), the negative pole of electric capacity (C1), the emitter of triode (VT), the surplus end of electric capacity (C2), all be communicated with binding post (A2), one end of thyristor (VS) is communicated with binding post (A2), and the other end is communicated with drive current terminal (B2), and the trigger electrode of thyristor (VS) is communicated with the surplus end of diac (VD); Binding post (A1) and binding post (A2) are communicated with AC power.
2. a kind of A.C. contactor drive circuit according to claim 1 is characterized in that: also comprise diode (D2; D3; D4; D5), electric capacity (C3); The negative pole of diode (D2) and diode (D3) is communicated with drive current terminal (B1), the positive pole of diode (D4) and diode (D5) is communicated with drive current terminal (B2), the negative pole that the positive pole of diode (D2) is communicated with diode (D4) is communicated with binding post (A1) again, the negative pole of the positive pole connection diode (D5) of diode (D3) is communicated with an end of thyristor (VS) again, electric capacity (C3) is connected in parallel with thyristor (VS), and drive current terminal (B1) is connected with the two ends of ac contactor coil (CJ) respectively with drive current terminal (B2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016223 CN2793906Y (en) | 2005-04-06 | 2005-04-06 | Driving circuit of AC contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016223 CN2793906Y (en) | 2005-04-06 | 2005-04-06 | Driving circuit of AC contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2793906Y true CN2793906Y (en) | 2006-07-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520016223 Expired - Fee Related CN2793906Y (en) | 2005-04-06 | 2005-04-06 | Driving circuit of AC contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2793906Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262977A (en) * | 2010-05-26 | 2011-11-30 | 台达电子工业股份有限公司 | Drive circuit of AC contactor |
| CN103996567A (en) * | 2014-05-27 | 2014-08-20 | 华为技术有限公司 | Contactor driving circuit |
-
2005
- 2005-04-06 CN CN 200520016223 patent/CN2793906Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262977A (en) * | 2010-05-26 | 2011-11-30 | 台达电子工业股份有限公司 | Drive circuit of AC contactor |
| CN102262977B (en) * | 2010-05-26 | 2013-10-09 | 台达电子工业股份有限公司 | Drive circuit of AC contactor |
| CN103996567A (en) * | 2014-05-27 | 2014-08-20 | 华为技术有限公司 | Contactor driving circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |