CN201584367U - AC and DC general voltage dropout preventive contactor controller - Google Patents
AC and DC general voltage dropout preventive contactor controller Download PDFInfo
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- CN201584367U CN201584367U CN2009201387181U CN200920138718U CN201584367U CN 201584367 U CN201584367 U CN 201584367U CN 2009201387181 U CN2009201387181 U CN 2009201387181U CN 200920138718 U CN200920138718 U CN 200920138718U CN 201584367 U CN201584367 U CN 201584367U
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Abstract
The utility model relates to an AC and DC general voltage dropout preventive contactor controller, which comprises a rectifying bridge, a filter capacitor, a strong current exciting switch tube, a free-wheeling and disjunction switch tube, a voltage sampling circuit, a simple driving circuit D1, a simple driving circuit D2, a single chip microcomputer and a switch power source. After the single chip microcomputer detects dropout of power voltage via the voltage sampling circuit, the single chip microcomputer controls conduction of the strong current exciting switch tube and the free-wheeling and disjunction switch tube, the filter capacitor provides energy to a coil, and the free-wheeling and disjunction switch tube follows current for the contactor coil, thereby being capable of guaranteeing accurate and convenient continuous operation of an AC and DC contactor during a voltage dropout period and normally controlling fast disjunction. In addition, the AC and DC general voltage dropout preventive contactor controller has the advantages of simple circuit, extremely low capacity of the switch power source, wide voltage, convenient control, low cost, high energy saving property, reliable and stable work, high property index, stronger applicability and the like.
Description
Technical field
The utility model relates to the contactor controller that a kind of AC/DC universal reactance voltage falls, and belongs to the contactor field.
Background technology
The contactor of antagonism electric voltage dropping is existing in the document at present discusses, propose to adopt at " Jilin Institute of Chemical Technology journal " paper that the 1st phase delivered in 2002 " research of the electric problem of anti-rolling " as Di Shuyu etc. and change conventional contactor into latched contactor, control loop installs UPS additional or changes direct current supply into, secondary circuit installs the R-C energy-storage travelling wave tube additional, possesses self-starting function or installs measures such as self-starting device additional, still, it is big that difficulty is not only controlled in these measures, weak effect, repacking trouble, and function singleness.
Summary of the invention
The purpose of this utility model is that the contactor controller that provides a kind of AC/DC universal reactance voltage to fall can realize that AC/DC contactor realizes guaranteeing during the electric voltage dropping contactor continuous service accurately, easily, quick disjunction when normally controlling disjunction, Switching Power Supply only provides single-chip microcomputer and the required small energy of voltage sampling circuit, realize that the AC/DC contactor reactance voltage falls operation, and the capacity with Switching Power Supply is very little, control is convenient, cost is low, energy-conservation, wide voltage, reliable and stable work, characteristics such as application is stronger.
The purpose of this utility model is achieved in that it comprises rectifier bridge, filter capacitor, the excitatory switching tube of heavy current, afterflow and section breaker pipe, voltage sampling circuit, the first simple and easy drive circuit, the second simple and easy drive circuit, single-chip microcomputer, Switching Power Supply, contactor coil; It is characterized in that: an end of a termination external control switch of power supply and electric voltage dropping sampled signal the 3rd input in the voltage sampling circuit, normal break-make control sampled signal first input end in AC side one end of another termination rectifier bridge of external control switch and the voltage sampling circuit, the AC side other end of another termination rectifier bridge of power supply and the secondary signal common port in the voltage sampling circuit, the anode of rectifier bridge connects the collector electrode of the excitatory switching tube of heavy current respectively, the first input end of Switching Power Supply and the positive pole of filter capacitor, the emitter of the excitatory switching tube of heavy current or source electrode respectively with an end of contactor coil, the emitter of afterflow and section breaker pipe joins, the negative terminal of rectifier bridge respectively with second input of Switching Power Supply, the negative pole of filter capacitor, the other end of contactor coil, the collector electrode of afterflow and section breaker pipe joins, the first input end and second input that normal break-make control sampled signal the 4th output of voltage sampling circuit and the 5th output are received single-chip microcomputer respectively, the 6th output of the electric voltage dropping sampled signal of voltage sampling circuit and the 7th output are received the 3rd input and the four-input terminal of single-chip microcomputer respectively, the 3rd output of Switching Power Supply and the 4th output join with first power end and the second source end of single-chip microcomputer respectively, the 5th output of Switching Power Supply and the 6th output join with first power end and the second source end of voltage sampling circuit respectively, the 5th delivery outlet of single-chip microcomputer and the input of the first simple and easy drive circuit join, the control utmost point of the output of the first simple and easy drive circuit and the excitatory switching tube of heavy current joins, the 7th delivery outlet of single-chip microcomputer and the input of the second simple and easy drive circuit join, the control utmost point of the output of the second simple and easy drive circuit and afterflow and section breaker pipe joins, and the 6th delivery outlet of single-chip microcomputer and the emitter of the excitatory switching tube of heavy current join.
The AC/DC contactor that compared with prior art can guarantee the utility model realizes contactor continuous service during the electric voltage dropping accurately, easily, quick disjunction when normally controlling disjunction, realize optimizing starting process by the control starting sequence, make full use of switching tube, Switching Power Supply only provides control section required small energy, realize that the AC/DC contactor reactance voltage falls operation, and it is simple to have a circuit, the capacity of Switching Power Supply is very little, wide voltage, and control is convenient, cost is low, energy-conservation, reliable and stable work, characteristics such as high performance index, application are stronger.
When the external control switch closure, single-chip microcomputer is after voltage sampling circuit detects normal break-make control sampled signal and shows that contactor applies excitation power supply voltage, judge it is DC power supply or AC power earlier, then according to the size of supply voltage, single-chip microcomputer is controlled the excitatory switching tube work of heavy current with different frequencies and duty ratio by simple and easy drive circuit, do by simple and easy drive circuit control afterflow and section breaker plumber, at the excitatory switching tube of heavy current turn-off time contactor coil electric current by afterflow and the afterflow of section breaker pipe, realize the strong excitatory start-up course of optimization under the wide power voltage, after Contactor Starting is finished, because required maintenance energy is very little, control the excitatory switching tube work of heavy current by single-chip microcomputer change frequency and duty ratio by simple and easy drive circuit, afterflow and section breaker pipe still are in the afterflow state, make contactor coil be in the small-power state, realize energy-saving run, sticking institute energy requirement is not to be provided by Switching Power Supply, but provide by power supply, and Switching Power Supply only provides control section required small energy, when external control switch is opened, single-chip microcomputer detects normal break-make control sampled signal through voltage sampling circuit and shows that contactor should normally divide and have no progeny, immediately by simple and easy drive circuit, simple and easy drive circuit directly turn-offs the excitatory switching tube of heavy current and afterflow and section breaker pipe respectively, realized quick disjunction, if generation electric voltage dropping, single-chip microcomputer detects electric voltage dropping sampled signal input through voltage sampling circuit and all is low level with normal break-make control sampled signal input end signal, show contactor power supply generation electric voltage dropping, excitatory switching tube of Single-chip Controlling heavy current and afterflow and the conducting of section breaker pipe, filter capacitor provides energy for coil, afterflow and section breaker pipe are the contactor coil afterflow, can guarantee that AC/DC contactor is accurate, realize contactor continuous service during the electric voltage dropping easily, quick disjunction when normally controlling disjunction, realize optimizing starting process by the control starting sequence, make full use of switching tube, Switching Power Supply only provides control section required small energy, realize that the AC/DC contactor reactance voltage falls operation, and it is simple to have a circuit, the capacity of Switching Power Supply is very little, wide voltage, control is convenient, cost is low, energy-conservation, reliable and stable work, high performance index, characteristics such as application is stronger.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model.
Fig. 2 implements one schematic block circuit diagram for the utility model.
Fig. 3 implements two schematic block circuit diagram for the utility model.
Fig. 4 implements three schematic block circuit diagram for the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
As shown in Figure 1, the contactor controller that a kind of AC/DC universal reactance voltage falls comprises rectifier bridge B, filter capacitor H, the excitatory switching tube C of heavy current, afterflow and section breaker pipe F, voltage sampling circuit G, simple and easy drive circuit D1, simple and easy drive circuit D2, single-chip microcomputer I, Switching Power Supply J, contactor coil E; It is characterized in that: the end of the termination external control switch K of power supply A and the electric voltage dropping sampled signal input among the voltage sampling circuit G, normal break-make control sampled signal input among AC side one end of another termination rectifier bridge B of external control switch K and the voltage sampling circuit G, the AC side other end of another termination rectifier bridge B of power supply A and the signal common port among the voltage sampling circuit G, the anode of rectifier bridge B connects the collector electrode of the excitatory switching tube C of heavy current respectively, the positive pole of the input of Switching Power Supply J and filter capacitor H, the emitter of the excitatory switching tube C of heavy current or source electrode respectively with the end of contactor coil E, the emitter of afterflow and section breaker pipe F joins, the negative terminal of rectifier bridge B respectively with another input of Switching Power Supply J, the negative pole of filter capacitor H, the other end of contactor coil E, the collector electrode of afterflow and section breaker pipe F joins, two outputs of normal break-make control sampled signal of voltage sampling circuit G are received two inputs of single-chip microcomputer I respectively, two outputs of the electric voltage dropping sampled signal of voltage sampling circuit G are received two inputs of single-chip microcomputer I respectively, two outputs of Switching Power Supply J join with the power end of single-chip microcomputer I respectively, two outputs of Switching Power Supply J join with the power end of voltage sampling circuit G respectively, the delivery outlet of single-chip microcomputer I and the input of simple and easy drive circuit D1 join, the control utmost point of the excitatory switching tube C of the output of simple and easy drive circuit D1 and heavy current joins, another delivery outlet of single-chip microcomputer I and the input of simple and easy drive circuit D2 join, the control utmost point of the output of simple and easy drive circuit D2 and afterflow and section breaker pipe F joins, and the 3rd delivery outlet of single-chip microcomputer I and the emitter of the excitatory switching tube C of heavy current join.
What deserves to be mentioned is that the excitatory switching tube C of heavy current described in the utility model is IGBT igbt or transistor or MOSFET field effect transistor.Described afterflow and section breaker pipe F are IGBT igbt or transistor or MOSFET field effect transistor.
When the external control switch closure, single-chip microcomputer is after voltage sampling circuit detects normal break-make control sampled signal and shows that contactor applies excitation power supply voltage, judge it is DC power supply or AC power earlier, then according to the size of supply voltage, single-chip microcomputer with different frequencies and duty ratio by the excitatory switching tube work of simple and easy drive circuit D1 control heavy current, do by simple and easy drive circuit D2 control afterflow and section breaker plumber, at the excitatory switching tube of heavy current turn-off time contactor coil electric current by afterflow and the afterflow of section breaker pipe, realize the strong excitatory start-up course of optimization under the wide power voltage, after Contactor Starting is finished, because required maintenance energy is very little, control the excitatory switching tube work of heavy current by single-chip microcomputer change frequency and duty ratio by simple and easy drive circuit D1, afterflow and section breaker pipe still are in the afterflow state, make contactor coil be in the small-power state, realize energy-saving run, sticking institute energy requirement is not to be provided by Switching Power Supply, but provide by power supply, and Switching Power Supply only provides control section required small energy, when external control switch is opened, single-chip microcomputer detects normal break-make control sampled signal through voltage sampling circuit and shows that contactor should normally divide and have no progeny, immediately by simple and easy drive circuit D1, simple and easy drive circuit D2 turn-offs the excitatory switching tube of heavy current and afterflow and section breaker pipe respectively, realized quick disjunction, if generation electric voltage dropping, single-chip microcomputer detects electric voltage dropping sampled signal input through voltage sampling circuit and all is low level with normal break-make control sampled signal input end signal, show contactor power supply generation electric voltage dropping, excitatory switching tube of Single-chip Controlling heavy current and afterflow and the conducting of section breaker pipe, filter capacitor provides energy for coil, afterflow and section breaker pipe are the contactor coil afterflow, guarantee that contactor does not discharge during electric voltage dropping.
As shown in Figure 2, the contactor controller that a kind of AC/DC universal reactance voltage falls comprises rectifier bridge B, the excitatory switching tube C of heavy current, afterflow and section breaker pipe F, voltage sampling circuit G, simple and easy drive circuit D1, simple and easy drive circuit D2, single-chip microcomputer I, Switching Power Supply J, contactor coil E; It is characterized in that: between the positive pole of the anode of rectifier bridge B and filter capacitor H, add diode D3, the positive pole of the positive terminating diode D3 of rectifier bridge B, the negative pole of diode D3 connects the positive pole of filter capacitor H, and other part-structures are identical with embodiment one.
When the external control switch closure, single-chip microcomputer is after voltage sampling circuit detects normal break-make control sampled signal and shows that contactor applies excitation power supply voltage, judge it is DC power supply or AC power earlier, then according to the size of supply voltage, single-chip microcomputer with different frequencies and duty ratio by the excitatory switching tube work of simple and easy drive circuit D1 control heavy current, do by simple and easy drive circuit D2 control afterflow and section breaker plumber, at the excitatory switching tube of heavy current turn-off time contactor coil electric current by afterflow and the afterflow of section breaker pipe, realize the strong excitatory start-up course of optimization under the wide power voltage, after Contactor Starting is finished, because required maintenance energy is very little, control the excitatory switching tube work of heavy current by single-chip microcomputer change frequency and duty ratio by simple and easy drive circuit D1, afterflow and section breaker pipe still are in the afterflow state, make contactor coil be in the small-power state, realize energy-saving run, sticking institute energy requirement is not to be provided by Switching Power Supply, but provide by power supply, and Switching Power Supply only provides control section required small energy, when external control switch is opened, single-chip microcomputer detects normal break-make control sampled signal through voltage sampling circuit and shows that contactor should normally divide and have no progeny, immediately by simple and easy drive circuit D1, simple and easy drive circuit D2 turn-offs the excitatory switching tube of heavy current and afterflow and section breaker pipe respectively, realized quick disjunction, if generation electric voltage dropping, single-chip microcomputer detects electric voltage dropping sampled signal input through voltage sampling circuit and all is low level with normal break-make control sampled signal input end signal, show contactor power supply generation electric voltage dropping, single-chip microcomputer sends the signal controlling afterflow and the section breaker pipe is in conducting state, the coil current afterflow, if coil parameter is reasonable, guarantee that contactor does not discharge during electric voltage dropping.
As shown in Figure 3, the contactor controller that a kind of AC/DC universal reactance voltage falls comprises rectifier bridge B, filter capacitor H, the excitatory switching tube C of heavy current, afterflow and section breaker pipe F, voltage sampling circuit G, simple and easy drive circuit D1, simple and easy drive circuit D2, single-chip microcomputer I, Switching Power Supply J, contactor coil E; It is characterized in that: described external control switch K changes hand push button K into, the end of power supply A is taken over an end of moving button K normally open contact respectively, the end of Self-lock contactor normally open contact E1, the other end of the other end of hand push button K normally open contact and Self-lock contactor normally open contact E1, one end of electric voltage dropping sampled signal input among the voltage sampling circuit G and hand push button K normally closed interlock joins, normal break-make control sampled signal input among another termination voltage sampling circuit G of manual button K normally closed interlock and AC side one end of rectifier bridge B, the AC side other end of another termination rectifier bridge B of power supply A and the signal common port among the voltage sampling circuit G, other part-structures are identical with embodiment one.
When hand push button K normally open contact closure, single-chip microcomputer is after voltage sampling circuit detects normal break-make control sampled signal and shows that contactor applies excitation power supply voltage, judge it is DC power supply or AC power earlier, then according to the size of supply voltage, single-chip microcomputer with different frequencies and duty ratio by the excitatory switching tube work of simple and easy drive circuit D1 control heavy current, do by simple and easy drive circuit D2 control afterflow and section breaker plumber, at the excitatory switching tube of heavy current turn-off time contactor coil electric current by afterflow and the afterflow of section breaker pipe, realize the strong excitatory start-up course of optimization under the wide power voltage, after Contactor Starting is finished, because required maintenance energy is very little, control the excitatory switching tube work of heavy current by single-chip microcomputer change frequency and duty ratio by simple and easy drive circuit D1, afterflow and section breaker pipe still are in the afterflow state, make contactor coil be in the small-power state, realize energy-saving run, sticking institute energy requirement is not to be provided by Switching Power Supply, but provide by power supply, and Switching Power Supply only provides control section required small energy, when hand push button K normally closed interlock is opened, single-chip microcomputer detects normal break-make control sampled signal through voltage sampling circuit and shows that contactor should normally divide and have no progeny, immediately by simple and easy drive circuit D1, simple and easy drive circuit D2 turn-offs the excitatory switching tube of heavy current and afterflow and section breaker pipe respectively, realized quick disjunction, if generation electric voltage dropping, single-chip microcomputer detects electric voltage dropping sampled signal input through voltage sampling circuit and all is low level with normal break-make control sampled signal input end signal, show contactor power supply generation electric voltage dropping, excitatory switching tube of Single-chip Controlling heavy current and afterflow and the conducting of section breaker pipe, filter capacitor provides energy for coil, afterflow and section breaker pipe are the contactor coil afterflow, guarantee that contactor does not discharge during electric voltage dropping.
As shown in Figure 4, the contactor controller that a kind of AC/DC universal reactance voltage falls comprises rectifier bridge B, the excitatory switching tube C of heavy current, afterflow and section breaker pipe F, voltage sampling circuit G, simple and easy drive circuit D1, simple and easy drive circuit D2, single-chip microcomputer I, Switching Power Supply J, contactor coil E; It is characterized in that: between the positive pole of the anode of rectifier bridge B and filter capacitor H, add diode D3, the positive pole of the positive terminating diode D3 of rectifier bridge B, the negative pole of diode D3 connects the positive pole of filter capacitor H, and other part-structures are identical with embodiment three.
When hand push button K normally open contact closure, single-chip microcomputer is after voltage sampling circuit detects normal break-make control sampled signal and shows that contactor applies excitation power supply voltage, judge it is DC power supply or AC power earlier, then according to the size of supply voltage, single-chip microcomputer with different frequencies and duty ratio by the excitatory switching tube work of simple and easy drive circuit D1 control heavy current, do by simple and easy drive circuit D2 control afterflow and section breaker plumber, at the excitatory switching tube of heavy current turn-off time contactor coil electric current by afterflow and the afterflow of section breaker pipe, realize the strong excitatory start-up course of optimization under the wide power voltage, after Contactor Starting is finished, because required maintenance energy is very little, control the excitatory switching tube work of heavy current by single-chip microcomputer change frequency and duty ratio by simple and easy drive circuit D1, afterflow and section breaker pipe still are in the afterflow state, make contactor coil be in the small-power state, realize energy-saving run, sticking institute energy requirement is not to be provided by Switching Power Supply, but provide by power supply, and Switching Power Supply only provides control section required small energy, when hand push button K normally closed interlock is opened, single-chip microcomputer detects normal break-make control sampled signal through voltage sampling circuit and shows that contactor should normally divide and have no progeny, immediately by simple and easy drive circuit D1, simple and easy drive circuit D2 turn-offs the excitatory switching tube of heavy current and afterflow and section breaker pipe respectively, realized quick disjunction, if generation electric voltage dropping, single-chip microcomputer detects electric voltage dropping sampled signal input through voltage sampling circuit and all is low level with normal break-make control sampled signal input end signal, show contactor power supply generation electric voltage dropping, single-chip microcomputer sends the signal controlling afterflow and the section breaker pipe is in conducting state, the coil current afterflow, if coil parameter is reasonable, guarantee that contactor does not discharge during electric voltage dropping.
More than be preferred embodiment of the present utility model, all changes of doing according to technical solutions of the utility model when the function that is produced does not exceed the scope of technical solutions of the utility model, all belong to protection range of the present utility model.
Claims (6)
1. the contactor controller that the AC/DC universal reactance voltage falls comprises rectifier bridge, filter capacitor, the excitatory switching tube of heavy current, afterflow and section breaker pipe, voltage sampling circuit, the first simple and easy drive circuit, the second simple and easy drive circuit, single-chip microcomputer, Switching Power Supply, contactor coil; It is characterized in that: an end of a termination external control switch of power supply and electric voltage dropping sampled signal the 3rd input in the voltage sampling circuit, normal break-make control sampled signal first input end in AC side one end of another termination rectifier bridge of external control switch and the voltage sampling circuit, the AC side other end of another termination rectifier bridge of power supply and the secondary signal common port in the voltage sampling circuit, the anode of rectifier bridge connects the collector electrode of the excitatory switching tube of heavy current respectively, the first input end of Switching Power Supply and the positive pole of filter capacitor, the emitter of the excitatory switching tube of heavy current or source electrode respectively with an end of contactor coil, the emitter of afterflow and section breaker pipe joins, the negative terminal of rectifier bridge respectively with second input of Switching Power Supply, the negative pole of filter capacitor, the other end of contactor coil, the collector electrode of afterflow and section breaker pipe joins, the first input end and second input that normal break-make control sampled signal the 4th output of voltage sampling circuit and the 5th output are received single-chip microcomputer respectively, the 6th output of the electric voltage dropping sampled signal of voltage sampling circuit and the 7th output are received the 3rd input and the four-input terminal of single-chip microcomputer respectively, the 3rd output of Switching Power Supply and the 4th output join with first power end and the second source end of single-chip microcomputer respectively, the 5th output of Switching Power Supply and the 6th output join with first power end and the second source end of voltage sampling circuit respectively, the 5th delivery outlet of single-chip microcomputer and the input of the first simple and easy drive circuit join, the control utmost point of the output of the first simple and easy drive circuit and the excitatory switching tube of heavy current joins, the 7th delivery outlet of single-chip microcomputer and the input of the second simple and easy drive circuit join, the control utmost point of the output of the second simple and easy drive circuit and afterflow and section breaker pipe joins, and the 6th delivery outlet of single-chip microcomputer and the emitter of the excitatory switching tube of heavy current join.
2. the contactor controller that AC/DC universal reactance voltage according to claim 1 falls is characterized in that: the excitatory switching tube of described heavy current is IGBT igbt or transistor or MOSFET field effect transistor.
3. the contactor controller that AC/DC universal reactance voltage according to claim 1 falls is characterized in that: described afterflow and section breaker pipe are IGBT igbt or transistor or MOSFET field effect transistor.
4. the contactor controller that AC/DC universal reactance voltage according to claim 1 falls, it is characterized in that: between the positive pole of the anode of rectifier bridge and filter capacitor, add diode, the positive pole of the positive terminating diode of rectifier bridge, the negative pole of diode connects the positive pole of filter capacitor.
5. the contactor controller that AC/DC universal reactance voltage according to claim 1 falls, it is characterized in that: described external control switch changes hand push button into, one end of power supply is taken over an end of moving button normally open contact respectively, one end of Self-lock contactor normally open contact, the other end of the other end of hand push button normally open contact and Self-lock contactor normally open contact, electric voltage dropping sampled signal the 3rd input in the voltage sampling circuit and an end of hand push button normally closed interlock join, the normal break-make control sampled signal first input end in another termination voltage sampling circuit of manual button normally closed interlock and AC side one end of rectifier bridge, the AC side other end of another termination rectifier bridge of power supply and the secondary signal common port in the voltage sampling circuit.
6. the contactor controller that AC/DC universal reactance voltage according to claim 5 falls, it is characterized in that: between the positive pole of the anode of rectifier bridge and filter capacitor, add diode, the positive pole of the positive terminating diode of rectifier bridge, the negative pole of diode connects the positive pole of filter capacitor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009201387181U CN201584367U (en) | 2009-06-10 | 2009-06-10 | AC and DC general voltage dropout preventive contactor controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009201387181U CN201584367U (en) | 2009-06-10 | 2009-06-10 | AC and DC general voltage dropout preventive contactor controller |
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| CN201584367U true CN201584367U (en) | 2010-09-15 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102693872A (en) * | 2012-06-25 | 2012-09-26 | 福州大学 | Alternating-current contactor controller and control method based on low-voltage capacitor |
| CN102931032A (en) * | 2012-10-30 | 2013-02-13 | 福州大学 | Low-voltage AC/DC control and protection electrical appliance |
| CN103021735A (en) * | 2012-12-11 | 2013-04-03 | 福州大学 | Alternating current contactor intelligent control module with high speed pulse width modulation function |
| CN103762119A (en) * | 2013-12-30 | 2014-04-30 | 上海良信电器股份有限公司 | Wide voltage electromagnetic contactor control circuit with low voltage ride-through function |
| CN105699809A (en) * | 2016-02-16 | 2016-06-22 | 烽火通信科技股份有限公司 | Direct current voltage drop generator |
| CN111693854A (en) * | 2020-06-24 | 2020-09-22 | 贵州天义电器有限责任公司 | Circuit for simulating voltage drop and operation method thereof |
| WO2021129814A1 (en) * | 2019-12-26 | 2021-07-01 | 施耐德电气工业公司 | Control circuit and control method for contactor |
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2009
- 2009-06-10 CN CN2009201387181U patent/CN201584367U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102693872A (en) * | 2012-06-25 | 2012-09-26 | 福州大学 | Alternating-current contactor controller and control method based on low-voltage capacitor |
| CN102693872B (en) * | 2012-06-25 | 2015-04-22 | 福州大学 | Alternating-current contactor controller and control method based on low-voltage capacitor |
| CN102931032A (en) * | 2012-10-30 | 2013-02-13 | 福州大学 | Low-voltage AC/DC control and protection electrical appliance |
| CN102931032B (en) * | 2012-10-30 | 2014-12-03 | 福州大学 | Low-voltage AC/DC control and protection electrical appliance |
| CN103021735A (en) * | 2012-12-11 | 2013-04-03 | 福州大学 | Alternating current contactor intelligent control module with high speed pulse width modulation function |
| CN103762119A (en) * | 2013-12-30 | 2014-04-30 | 上海良信电器股份有限公司 | Wide voltage electromagnetic contactor control circuit with low voltage ride-through function |
| CN105699809A (en) * | 2016-02-16 | 2016-06-22 | 烽火通信科技股份有限公司 | Direct current voltage drop generator |
| WO2021129814A1 (en) * | 2019-12-26 | 2021-07-01 | 施耐德电气工业公司 | Control circuit and control method for contactor |
| CN111693854A (en) * | 2020-06-24 | 2020-09-22 | 贵州天义电器有限责任公司 | Circuit for simulating voltage drop and operation method thereof |
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