CN204732348U - A.C. contactor Width funtion Drive and Control Circuit - Google Patents
A.C. contactor Width funtion Drive and Control Circuit Download PDFInfo
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- CN204732348U CN204732348U CN201520460807.3U CN201520460807U CN204732348U CN 204732348 U CN204732348 U CN 204732348U CN 201520460807 U CN201520460807 U CN 201520460807U CN 204732348 U CN204732348 U CN 204732348U
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- contactor
- drive
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- control circuit
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Abstract
The utility model relates to a kind of A.C. contactor Drive and Control Circuit.The utility model discloses a kind of A.C. contactor Width funtion Drive and Control Circuit, be made up of resistance, electric capacity, metal-oxide-semiconductor, relay, rectifier and diode.A.C. contactor Width funtion Drive and Control Circuit of the present utility model is a kind of Drive and Control Circuit be embedded in A.C. contactor shell.Starting current supply circuit can be divided into according to circuit function effect, run change-over circuit and holding current supply circuit.The utility model circuit design is reasonable, simple and compact for structure, can embed completely in A.C. contactor shell, being integrally formed A.C. contactor.Constant-current drive circuit structure ensure that the driveability of circuit, A.C. contactor Width funtion Drive and Control Circuit of the present utility model, can in wider AC voltage range steady operation, greatly expanded A.C. contactor operating voltage range.
Description
Technical field
The utility model relates to a kind of A.C. contactor Drive and Control Circuit, the A.C. contactor Drive and Control Circuit that particularly a kind of input voltage range is wider.
Background technology
Enter 21 century, along with the energy, environment, the becoming increasingly conspicuous of climate change problem, development new forms of energy, advance energy strategy transition, become the new trend of world energy sources development.New forms of energy restrict by many factors, as the time, weather etc. of season, every day, new forms of energy line voltage all may be caused unstable.Conventional AC contactor does not have versatility, usually can only work under an electric pressure, be not suitable with the particular/special requirement of some special occasions, and in the occasion that some new forms of energy voltage ripple of power network are larger, conventional AC contactor possibly cannot normally work.The operating voltage of most of electromagnetic type A.C. contactor is 85% ~ 110% of rated value 220V, i.e. 187 ~ 242V on the market at present.When voltage lower than rated value 220V 85% time, shaking just appears in contactor, the phenomenon of adhesive shakiness.The environment that Width funtion A.C. contactor runs is usually all relatively more severe, is often subject to electromagnetic interference, has higher requirement to control circuit.Particularly develop a kind of low cost wide voltage driven control circuit that can embed A.C. contactor shell, become the subject matter that urgently will solve now.
Utility model content
Technical problem to be solved in the utility model, is just to provide a kind of A.C. contactor Width funtion Drive and Control Circuit, improves A.C. contactor and adapts to voltage range.
The utility model solve the technical problem, and the technical scheme of employing is, A.C. contactor Width funtion Drive and Control Circuit, by resistance, electric capacity, metal-oxide-semiconductor, relay, rectifier and diode are formed, and it is characterized in that, an input of the first ac input end and rectifier is electrical connected, and another input of the second ac input end and rectifier is electrical connected, the positive pole of rectifier, the drain electrode of metal-oxide-semiconductor, one end of second resistance and one end of the 5th resistance are electrical connected, the grid of metal-oxide-semiconductor, the other end of the second resistance and the negative pole of voltage stabilizing didoe are electrical connected, the source electrode of metal-oxide-semiconductor, one end of 3rd resistance and a contact of relay are electrical connected, another contact of relay, the positive pole of the 3rd diode and one end of the 6th resistance are electrical connected, the other end of the 3rd resistance, the positive pole of voltage stabilizing didoe, the other end of the 6th resistance and the positive pole of the 4th diode are electrical connected, the negative pole of the 3rd diode, one end of 4th resistance is electrical connected, the other end of the 4th resistance, the other end of the 5th resistance, one end of relay coil and one end of the first electric capacity are electrical connected, the other end of relay coil, the other end of the first electric capacity, one end of second electric capacity and the positive pole of the 5th diode are electrical connected, the negative pole of the 4th diode, the negative pole of the 5th diode and one end of magnet exciting coil are electrical connected, the other end of magnet exciting coil, the other end of the second electric capacity and the negative pole of rectifier are electrical connected.
A.C. contactor Width funtion Drive and Control Circuit of the present utility model is a kind of Drive and Control Circuit be embedded in A.C. contactor shell.Can be divided into according to circuit function effect: starting current supply circuit, operation change-over circuit and holding current supply circuit.Starting current supply circuit is made up of a pair normally-closed contact of rectifier, the second resistance, metal-oxide-semiconductor, the 6th resistance and relay.Rectifier carries out rectification to alternating current, and for the grid of metal-oxide-semiconductor provides high direct voltage, metal-oxide-semiconductor exports big current, for magnet exciting coil provides starting current.Run change-over circuit to be made up of the 3rd diode, the 4th resistance, the 5th resistance, relay, the first electric capacity, the second electric capacity and the 5th diode.Holding current supply circuit is made up of rectifier, the second resistance, voltage stabilizing didoe, metal-oxide-semiconductor, the 3rd resistance and the 4th diode.When relay starts, normally-closed contact disconnects, and voltage stabilizing didoe is started working, and metal-oxide-semiconductor grid voltage diminishes, and metal-oxide-semiconductor output current diminishes, and provides holding current to magnet exciting coil.
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, be conducive to the antijamming capability improving circuit, particularly improve the antijamming capability to strong jamming pulses such as thunders and lightnings.
Described magnet exciting coil two ends are parallel with the 6th diode, and described 6th diode cathode connects the 4th diode cathode.
The current ratio that magnet exciting coil passes through is comparatively large, particularly starts and disconnects moment, can produce larger back electromotive force, and parallel diode is conducive to the interference reducing back electromotive force, improves the stability of circuit working
Arc-suppression circuit is parallel with between described relay contact.
Described arc-suppression circuit is made up of voltage stabilizing didoe.
Voltage stabilizing didoe can make the limiting voltage between relay normally-closed contact in very little scope, and normally-closed contact, closed or can not produce electric arc when disconnecting, be conducive to extending relay useful life, improve A.C. contactor reliability.
Described metal-oxide-semiconductor and voltage stabilizing didoe form constant-current circuit.
Metal-oxide-semiconductor and voltage stabilizing didoe form constant-current circuit, can improve drives ability, ensure the driveability of low-voltage.
The pick-up voltage value of described relay, far below the lower limit of A.C. contactor pick-up voltage.
The pick-up voltage of relay is far below the lower limit of A.C. contactor pick-up voltage, when can ensure that input voltage is in the lower limit of A.C. contactor pick-up voltage, the reliable adhesive of relay, disconnects magnet exciting coil starting voltage, fundamentally eliminates the shake of AC contactor touch head.
Described rectifier is made up of diode-bridge circuit.
Adopt diode-bridge circuit to have compact conformation, circuit working is reliable, the advantage that efficiency is high and cost is low.
Described A.C. contactor Width funtion Drive and Control Circuit embeds in A.C. contactor shell.
The utility model is reasonable in design, and circuit structure is compact, can be arranged on less circuit board, embeds in A.C. contactor shell and uses.
Described first electric capacity and/or the second electric capacity are polar capacitor.
Polar capacitor has the large feature of volume low capacity, adopts polar capacitor, is conducive to reducing the space that takies of circuit structure and obtaining larger capacitance.
The beneficial effects of the utility model are, circuit design is reasonable, simple and compact for structure, can embed completely in A.C. contactor shell, being integrally formed A.C. contactor.Constant-current drive circuit structure ensure that the driveability of circuit, A.C. contactor Width funtion Drive and Control Circuit of the present utility model, can in wider AC voltage range steady operation, greatly expanded A.C. contactor operating voltage range.
Accompanying drawing explanation
Fig. 1 is example structure schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
Embodiment
As shown in Figure 1, this routine A.C. contactor Width funtion Drive and Control Circuit, ac input end A1, ac input end A2 are electrical connected with two inputs of rectifier D1 respectively.First resistance R1 is piezo-resistance, and this piezo-resistance is connected in parallel on ac input end A1 and A2 two ends, and when there is the strong jamming pulse such as thunder and lightning, piezo-resistance R1 can release disturbance current, provides protection to circuit.In Fig. 1, rectifier D1 connects into bridge rectifier by 4 diodes and forms, rectifier D1 positive pole, the drain electrode of metal-oxide-semiconductor Q1, one end of second resistance R2 and one end of the 5th resistance R5 are electrical connected, the source electrode of metal-oxide-semiconductor Q1, one end of 3rd resistance R3 and a contact of relay J 1 are electrical connected, another contact of relay J 1, one end of 6th resistance R6 and the positive pole of the 3rd diode D3 are electrical connected, the grid of metal-oxide-semiconductor Q1, the other end of the second resistance R2 and the negative pole of voltage stabilizing didoe D2 are electrical connected, the other end of the 3rd resistance R3, the positive pole of voltage stabilizing didoe D2, the other end of the 6th resistance R6 and the positive pole of the 4th diode D4 are electrical connected.The negative pole of the 3rd diode D3 and one end of the 4th resistance R4 are electrical connected, the other end of the 4th resistance R4, the other end of the 5th resistance R5, one end of relay J 1 coil and the positive pole of the first electric capacity C1 are electrical connected, and the other end of relay J 1 coil, the negative pole of the first electric capacity C1, the positive pole of the second electric capacity C2 and the positive pole of the 5th diode D5 are electrical connected.The negative pole of the 4th diode D4, the negative pole of the 5th diode D5, the negative pole of the 6th diode D6 and one end of magnet exciting coil L1 are electrical connected, and the positive pole of the 6th diode D6, the other end of magnet exciting coil L1, the negative pole of the second electric capacity C2 and the negative pole of rectifier D1 are electrical connected.
This routine circuit working process prescription is as follows:
Ac input end A1 with A2 is connected alternating current.
Starting current supply circuit: alternating current holds input by A1, A2, full-wave rectification is carried out by rectifier D1, produce rectification high pressure and put on metal-oxide-semiconductor Q1 grid, metal-oxide-semiconductor Q1 conducting, electric current flows out from the positive pole of rectifier D1, flow through metal-oxide-semiconductor Q1, relay normally-closed contact JK-1, negative pole that the 6th resistance R6, the 4th diode D4 and magnet exciting coil L1 get back to rectifier D1, form loop, for magnet exciting coil L1 provides starting current.
Run change-over circuit: run change-over circuit and comprise start relay circuit and relay holding circuit.
Start relay circuit: electric current flows to magnet exciting coil L1 through the coil of the 3rd diode D3, the 4th resistance R4, relay J 1, the first electric capacity C1, the second electric capacity C2 and the 5th diode D5.After the first electric capacity C1 is full of electricity, electric current flows through the coil of relay J 1, and relay normally-closed contact JK-1 opens, major loop power-off, and circuit enters sticking state, and meanwhile, relay also enters sticking state.
Relay holding circuit: electric current flows to magnet exciting coil L1 through the coil of the 5th resistance R5, relay J 1 and the 5th diode D5.The resistance of choose reasonable the 5th resistance R5, adopts small area analysis latching relay, can improve stability and the useful life of relay J 1.First electric capacity C1 has delay effect, can make the reliable adhesive of contactor, also play the effect of filtering, makes the operating voltage of relay more stable.
Holding current supply circuit: alternating current holds input by A1, A2, then rectifier D1 carries out full-wave rectification, electric current flows out from the positive pole of rectifier D1, flow through metal-oxide-semiconductor Q1, the 3rd resistance R3, negative pole that the second resistance R2, voltage stabilizing didoe D2, the 4th diode D4 and magnet exciting coil L1 get back to rectifier D1, form loop, for magnet exciting coil L1 provides holding current.Voltage stabilizing didoe D2 and metal-oxide-semiconductor Q1 forms constant-current circuit, the output current of metal-oxide-semiconductor Q1 can not be changed along with the input voltage change of A1, A2, be conducive to improving driveability.
Piezo-resistance R1 can suppress surge voltage, when the surge voltage maximum of transient state exceedes restriction, piezo-resistance R1 just embodies its clamping performance, too high voltage is dragged down, allow late-class circuit be operated in the scope of a safety, improve A.C. contactor to the antijamming capability of the strong jamming pulses such as thunder and lightning.Voltage stabilizing didoe D2 can make the voltage between relay normally-closed contact in very little scope, make its closed or disconnect time can not produce electric arc, relay useful life can be extended, improve A.C. contactor reliability.Second electric capacity C2 is connected on relay J 1 rear end, effectively can improve the voltage stability of magnet exciting coil L1, contactor is run more stable, and can starting relay be helped.6th diode D6 is connected in parallel on the two ends of magnet exciting coil L1, and its plus earth plays the effect of afterflow, is conducive to the interference reducing back electromotive force.
This routine circuit, when nominal input voltage 100 ~ 250V, magnet exciting coil voltage about 2 ~ 3V, A.C. contactor adhesive pulse duration about 60 ~ 24ms.Can ensure can both steady operation when input ac voltage is 85 ~ 275V.
Claims (10)
1. A.C. contactor Width funtion Drive and Control Circuit, by resistance, electric capacity, metal-oxide-semiconductor, relay, rectifier and diode are formed, and it is characterized in that, an input of the first ac input end and rectifier is electrical connected, and another input of the second ac input end and rectifier is electrical connected, the positive pole of rectifier, the drain electrode of metal-oxide-semiconductor, one end of second resistance and one end of the 5th resistance are electrical connected, the grid of metal-oxide-semiconductor, the other end of the second resistance and the negative pole of voltage stabilizing didoe are electrical connected, the source electrode of metal-oxide-semiconductor, one end of 3rd resistance and a contact of relay are electrical connected, another contact of relay, the positive pole of the 3rd diode and one end of the 6th resistance are electrical connected, the other end of the 3rd resistance, the positive pole of voltage stabilizing didoe, the other end of the 6th resistance and the positive pole of the 4th diode are electrical connected, the negative pole of the 3rd diode, one end of 4th resistance is electrical connected, the other end of the 4th resistance, the other end of the 5th resistance, one end of relay coil and one end of the first electric capacity are electrical connected, the other end of relay coil, the other end of the first electric capacity, one end of second electric capacity and the positive pole of the 5th diode are electrical connected, the negative pole of the 4th diode, the negative pole of the 5th diode and one end of magnet exciting coil are electrical connected, the other end of magnet exciting coil, the other end of the second electric capacity and the negative pole of rectifier are electrical connected.
2. A.C. contactor Width funtion Drive and 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.
3. A.C. contactor Width funtion Drive and Control Circuit according to claim 1, is characterized in that, described magnet exciting coil two ends are parallel with the 6th diode, and described 6th diode cathode connects the 4th diode cathode.
4. A.C. contactor Width funtion Drive and Control Circuit according to claim 1, is characterized in that, be parallel with arc-suppression circuit between described relay contact.
5. A.C. contactor Width funtion Drive and Control Circuit according to claim 4, it is characterized in that, described arc-suppression circuit is made up of voltage stabilizing didoe.
6. A.C. contactor Width funtion Drive and Control Circuit according to claim 1, is characterized in that, described metal-oxide-semiconductor and voltage stabilizing didoe form constant-current circuit.
7. A.C. contactor Width funtion Drive and Control Circuit according to claim 1, is characterized in that, the pick-up voltage value of described relay, far below the lower limit of A.C. contactor pick-up voltage.
8. A.C. contactor Width funtion Drive and Control Circuit according to claim 1, it is characterized in that, described rectifier is made up of diode-bridge circuit.
9. A.C. contactor Width funtion Drive and Control Circuit according to claim 1, is characterized in that, described A.C. contactor Width funtion Drive and Control Circuit embeds in A.C. contactor shell.
10. A.C. contactor Width funtion Drive and Control Circuit according to claim 1, is characterized in that, described first electric capacity and/or the second electric capacity are polar capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520460807.3U CN204732348U (en) | 2015-06-30 | 2015-06-30 | A.C. contactor Width funtion Drive and Control Circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520460807.3U CN204732348U (en) | 2015-06-30 | 2015-06-30 | A.C. contactor Width funtion Drive and Control Circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204732348U true CN204732348U (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520460807.3U Expired - Fee Related CN204732348U (en) | 2015-06-30 | 2015-06-30 | A.C. contactor Width funtion Drive and Control Circuit |
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| Country | Link |
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| CN (1) | CN204732348U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667126A (en) * | 2018-04-20 | 2018-10-16 | 厦门科华恒盛股份有限公司 | A kind of contactor method of controlling operation, system and UPS applied to UPS |
-
2015
- 2015-06-30 CN CN201520460807.3U patent/CN204732348U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667126A (en) * | 2018-04-20 | 2018-10-16 | 厦门科华恒盛股份有限公司 | A kind of contactor method of controlling operation, system and UPS applied to UPS |
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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: 20151028 Termination date: 20190630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |