CN204270981U - A.C. contactor capacitance decompression control circuit - Google Patents
A.C. contactor capacitance decompression control circuit Download PDFInfo
- Publication number
- CN204270981U CN204270981U CN201420800535.2U CN201420800535U CN204270981U CN 204270981 U CN204270981 U CN 204270981U CN 201420800535 U CN201420800535 U CN 201420800535U CN 204270981 U CN204270981 U CN 204270981U
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- diode
- rectifier
- contactor
- control circuit
- electric capacity
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Abstract
The utility model relates to the built-in control circuit of a kind of A.C. contactor.The utility model discloses a kind of A.C. contactor capacitance decompression control circuit, be made up of rectifier, relay, resistance, electric capacity and diode.Control circuit of the present utility model, startup stage, relay normally-closed contact close, rectifier directly carries out rectification to alternating current, and provides starting current by diode to magnet exciting coil; In the sticking stage, relay normally-closed contact disconnects, and alternating current, after the second capacitance decompression, for rectifier provides lower voltage, provides sticking stream by the 5th diode to magnet exciting coil after over commutation, keeps A.C. contactor to be in attracting state.In circuit, components and parts is multiplexing, not only reduces magnet exciting coil power consumption, also reduces the use amount of components and parts, simplifies circuit structure, also reduces the power consumption of magnet exciting coil and the power consumption of control circuit itself further.
Description
Technical field
The utility model relates to the built-in control circuit of a kind of A.C. contactor, particularly a kind of A.C. contactor capacitance decompression control circuit.
Background technology
Along with the sustainable growth of AND ENERGY RESOURCES CONSUMPTION IN CHINA, energy-conservation and consumption reduction has become the problem that all trades and professions are paid close attention to.In low-voltage electrical field, energy-conservation mainly by undergoing technological transformation to low-voltage electrical apparatus, reduce its energy in run duration consumption to realize.A.C. contactor is as the main species of in low-voltage electrical apparatus, and its operation principle is simple, various in style, favorable working performance, and use amount is large, uses wide.Known conventional AC contactor is all power directly to magnet exciting coil, drives link gear to drive main contact to close/disconnect, the work of control load.Easily raise in the working temperature of such running coil, cause because temperature rise is too high coil premature aging to burn even.Prior art A.C. contactor Drive and Control Circuit, ubiquity magnet exciting coil power consumption is large, the shortcoming that the power consumption of circuit structure more complicated is large.In the face of these problems, how reducing contactor operation power consumption, increasing the service life is the direction developed at present.
Utility model content
Technical problem to be solved in the utility model, is just to provide a kind of A.C. contactor capacitance decompression control circuit, by optimization circuits, reduces A.C. contactor and runs power consumption.
The utility model solve the technical problem, and the technical scheme of employing is, A.C. contactor capacitance decompression control circuit, by rectifier, relay, resistance, electric capacity and diode are formed, and it is characterized in that, the first ac input end, 3rd diode cathode, 8th diode cathode, second diode cathode, one end of relay normally-closed contact is electrical connected, the 3rd diode cathode, 8th diode cathode, one end of second electric capacity is electrical connected, the other end of the second electric capacity, the other end of relay normally-closed contact, one end of rectifier input is electrical connected, the second ac input end, the other end of rectifier input is electrical connected, rectifier anode, 5th diode cathode is electrical connected, the second diode cathode, one end of second resistance, first electric capacity C1 positive pole is electrical connected, the other end of the second resistance, one end of relay, 3rd capacitance cathode, 4th diode cathode is electrical connected, the relay other end, 3rd electric capacity negative pole, 4th diode cathode, 6th diode cathode, 4th capacitance cathode is electrical connected, the 5th diode cathode, 6th diode cathode, one end of magnet exciting coil is electrical connected, rectifier negative pole, first electric capacity negative pole, 4th electric capacity negative pole, the other end of magnet exciting coil is electrical connected.
Control circuit of the present utility model, startup stage, relay normally-closed contact close, rectifier directly carries out rectification to alternating current, and provides starting current by the 5th diode to magnet exciting coil; In the sticking stage, relay normally-closed contact disconnects, and alternating current, after the second capacitance decompression, for rectifier provides lower voltage, provides sticking stream by the 5th diode to magnet exciting coil after over commutation, keeps A.C. contactor to be in attracting state.In circuit, the second electric capacity, except hypotensive effect, also has the arc extinguishing effect of relay normally-closed contact.Same, rectifier also has the multi-functional providing starting current and holding current, not only reduces magnet exciting coil power consumption.This circuit structure not only decreases the use amount of components and parts, simplifies circuit structure, also reduces the power consumption of magnet exciting coil and the power consumption of control circuit itself further.
Concrete, described rectifier is full-wave rectifier, connects into bridge circuit form by four diodes.
Adopt bridge full wave rectifier, not only circuit structure is compacter, its brachium pontis and the second diode can also be utilized to form rectification circuit, simplify circuit further, reduce costs.
Further, described magnet exciting coil two ends are parallel with the 7th diode, and described 7th diode cathode is connected with the 5th diode cathode.
Magnet exciting coil parallel diode, the back electromotive force interference produced when can reduce magnet exciting coil work, is conducive to improving circuit reliability.
Further, piezo-resistance is parallel with between described first ac input end and the second ac input end.
In ac input end piezo-resistance in parallel, protection can be provided for control circuit, particularly to the hard pulse interference that thunder and lightning etc. produces, there is reliable protective effect.
The beneficial effects of the utility model are, the starting current of magnet exciting coil and holding current different alternating voltage of sampling is powered, and can either ensure reliable adhesive when starting, again reduce and reduce magnet exciting coil holding current, decrease circuit power consumption.Adopt capacitance decompression not consumed power, do not generate heat, reliability is high.Control circuit structure is simplified compact, and production cost is low, and small product size is little, is applicable to very much embedding being integrally formed of A.C. contactor shell structure.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of embodiment.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
A.C. contactor capacitance decompression control circuit of the present utility model, is made up of rectifier, relay, resistance, electric capacity and diode.By the ingehious design of circuit, improve the reusability of circuit components, enormously simplify circuit structure, decrease component number, reduce operation power consumption.
Embodiment
This routine A.C. contactor capacitance decompression control circuit, as shown in Figure 1, is made up of 1 rectifier, 1 relay, 2 resistance, 4 electric capacity and 7 diodes.Concrete annexation is as follows:
First ac input end A1, one end of piezo-resistance R1, 3rd diode D3 positive pole, 8th diode D8 negative pole, second diode D2 positive pole, one end of relay normally-closed contact JK-1 is electrical connected, the 3rd diode D3 negative pole, 8th diode D8 positive pole, one end of second voltage capacitance C2 is electrical connected, the other end of the second electric capacity C2, the relay normally-closed contact JK-1 other end, wherein one end of rectifier D1 input is electrical connected, the second ac input end A2, the other end of piezo-resistance R1, the other end of rectifier D1 input is electrical connected, rectifier D1 positive pole, 5th diode D5 positive pole is electrical connected, the second diode D2 negative pole, one end of second resistance R2, first electric capacity C1 positive pole is electrical connected, the other end of the second resistance R2, one end of relay J 1, 3rd electric capacity C3 positive pole, 4th diode D4 negative pole is electrical connected, relay J 1 other end, 3rd electric capacity C3 negative pole, 4th diode D4 negative pole, 6th diode D6 positive pole, 4th electric capacity C4 positive pole is electrical connected, the 5th diode D5 negative pole, 6th diode D6 negative pole, 7th diode D7 negative pole, one end of magnet exciting coil L1 is electrical connected, rectifier D1 negative pole, first electric capacity C1 negative pole, 4th electric capacity C4 negative pole, 7th diode D7 positive pole, the other end of magnet exciting coil L1 is electrical connected.
This routine circuit working process prescription is as follows:
A.C. contactor adhesive running: ac input end A1, A2 connect alternating voltage Us, A1 holds alternating current through wherein one end of relay normally-closed contact JK-1 to rectifier D1 input, A2 holds alternating current to connect the other end of rectifier D1 input, after rectifier D1 rectification, by the 5th diode D5, magnet exciting coil L1, arrive rectifier D1 negative pole again, form loop.Rectifier D1 in this course, provides attract current to magnet exciting coil L1, and A.C. contactor completes adhesive action.
A.C. contactor running state conversion process: A1 holds alternating current after the second diode D2 rectification, by the second resistance R2,3rd electric capacity C3 is charged, after charging complete, electric current flows through through relay J 1, make relay normally-closed contact JK-1 disjunction, then form loop through the 6th diode D6, magnet exciting coil L1 to rectifier D1 negative pole, A.C. contactor completes and is transitioned into adhesive hold mode (i.e. sticking state) by startup attracting state.In circuit, second resistance R2 has the effect regulating starting relay voltage, 3rd electric capacity C3 has the effect of regulating relay JK-1 break-time, 4th diode D4 is voltage stabilizing didoe, there is the stability improving relay J 1, the effect extending relay J 1 useful life, 4th electric capacity C4 plays the effect of filtering, and the first electric capacity C1 also has filter action, and can improve the voltage of change-over circuit.
A.C. contactor sticking state running: have no progeny when relay normally-closed contact JK-1 divides, A1 holds alternating current through the parallel circuits of the 3rd diode D3 and the 8th diode D8 and the second electric capacity C2, to wherein one end of rectifier D1 input after step-down, together with connecting the A2 alternating current of the rectifier D1 input other end after rectifier D1 rectification, through the 5th diode D5, magnet exciting coil L1 to rectifier D1 negative pole, form loop, for magnet exciting coil L1 provides holding current.3rd diode D3, the 8th diode D8, the second electric capacity C2 also form the arc-suppression circuit of this routine relay normally-closed contact JK-1, and the second electric capacity C2 has ac buck, contact arc extinguishing double effects here.
Claims (4)
1. A.C. contactor capacitance decompression control circuit, by rectifier, relay, resistance, electric capacity and diode are formed, and it is characterized in that, the first ac input end, 3rd diode cathode, 8th diode cathode, second diode cathode, one end of relay normally-closed contact is electrical connected, the 3rd diode cathode, 8th diode cathode, one end of second electric capacity is electrical connected, the other end of the second electric capacity, the other end of relay normally-closed contact, one end of rectifier input is electrical connected, the second ac input end, the other end of rectifier input is electrical connected, rectifier anode, 5th diode cathode is electrical connected, the second diode cathode, one end of second resistance, first electric capacity C1 positive pole is electrical connected, the other end of the second resistance, one end of relay, 3rd capacitance cathode, 4th diode cathode is electrical connected, the relay other end, 3rd electric capacity negative pole, 4th diode cathode, 6th diode cathode, 4th capacitance cathode is electrical connected, the 5th diode cathode, 6th diode cathode, one end of magnet exciting coil is electrical connected, rectifier negative pole, first electric capacity negative pole, 4th electric capacity negative pole, the other end of magnet exciting coil is electrical connected.
2. A.C. contactor capacitance decompression control circuit according to claim 1, is characterized in that, described rectifier is full-wave rectifier, connects into bridge circuit form by four diodes.
3. A.C. contactor capacitance decompression control circuit according to claim 1, is characterized in that, described magnet exciting coil two ends are parallel with the 7th diode, and described 7th diode cathode is connected with the 5th diode cathode.
4. A.C. contactor capacitance decompression control circuit according to claim 1, is characterized in that, is parallel with piezo-resistance between described first ac input end and the second ac input end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420800535.2U CN204270981U (en) | 2014-12-16 | 2014-12-16 | A.C. contactor capacitance decompression control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420800535.2U CN204270981U (en) | 2014-12-16 | 2014-12-16 | A.C. contactor capacitance decompression control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204270981U true CN204270981U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420800535.2U Expired - Fee Related CN204270981U (en) | 2014-12-16 | 2014-12-16 | A.C. contactor capacitance decompression control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204270981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328440A (en) * | 2016-08-30 | 2017-01-11 | 合肥智博电气有限公司 | Electromagnetic conversion mechanism for electromagnetic voltage stabilization energy-saving apparatus |
-
2014
- 2014-12-16 CN CN201420800535.2U patent/CN204270981U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328440A (en) * | 2016-08-30 | 2017-01-11 | 合肥智博电气有限公司 | Electromagnetic conversion mechanism for electromagnetic voltage stabilization energy-saving apparatus |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: High tech Zone Chengdu city Sichuan province 610041 Gaopeng Road No. 5 building third floor third No. C2D1 Patentee after: Chengdu Hepworth electrical Limited by Share Ltd Address before: High tech Zone Chengdu city Sichuan province 610041 Gaopeng Road No. 5 building third floor third No. C2D1 Patentee before: Sea, Chengdu Butterworth electrical technology Co., Ltd |
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| 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: 20150415 Termination date: 20191216 |