CN104900449A - Relay control circuit - Google Patents
Relay control circuit Download PDFInfo
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- CN104900449A CN104900449A CN201410074077.3A CN201410074077A CN104900449A CN 104900449 A CN104900449 A CN 104900449A CN 201410074077 A CN201410074077 A CN 201410074077A CN 104900449 A CN104900449 A CN 104900449A
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Abstract
The invention provides a relay control circuit which is used for controlling a relay. The relay comprises a coil and a relay switch. The relay control circuit comprises a control switch, a power supply and a transistor. The positive electrode of the power supply is connected with the first end of the coil via a first diode and is connected with the second end of the coil via a first resistor, a second resistor, a first capacitor and a second diode. The cathode of the first diode is connected with the negative electrode of the power supply via a second capacitor and a third resistor. The emission electrode of the transistor is connected with the positive electrode of the power supply, the collection electrode is connected with the node of the second capacitor and the third resistor, and the base electrode is connected with the node of the first resistor and the second resistor. The coil is connected with the negative electrode of the power supply via the control switch. The control switch is closed and then the relay switch is closed.
Description
Technical field
The present invention relates to a kind of control relay circuit.
Background technology
The drive circuit of existing relay by control coil whether be energized to the closed of control relay switch with disconnect, and then the break-make of control load circuit.But the magnetic force that relay coil produces magnetic force and coil disappears and all needs the regular hour, therefore, this kind of drive circuit can not the connecting and disconnecting of control load circuit fast.
Summary of the invention
In view of this, be necessary to provide a kind of can the control circuit of control relay quick-make.
A kind of control relay circuit, in order to control a relay, this relay comprises a coil and a relay switch.This control relay circuit comprises a control switch, a power supply and a transistor, the positive pole of this power supply is connected to the first end of coil by one first diode, and the second end of coil is connected to by one first resistance, one second resistance, one first electric capacity and one second diode, the negative electrode of this first diode is connected to the negative pole of power supply by one second electric capacity and one the 3rd resistance.The emitter of this transistor is connected to positive source, and its collector electrode is connected to the node of the second electric capacity and the 3rd resistance, and its base stage is connected to the node of the first resistance and the second resistance.This coil connects the negative pole of power supply by control switch.After control switch is closed, this relay switch closes.
Compare prior art, the power module of invention relay control circuit can realize the quick on-off of relay switch.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the first better embodiment of invention relay control circuit.
Fig. 2 is the circuit diagram of the second better embodiment of invention relay control circuit.
Fig. 3 is the circuit diagram of the 3rd better embodiment of invention relay control circuit.
Main element symbol description
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Please refer to Fig. 1, the first better embodiment 100 of invention relay control circuit in order to control the break-make of a relay 40, and then controls the break-make of the load circuit 200 that is controlled by this relay 40.
This relay 40 comprises an a coil L and relay switch A.
This load circuit 200 comprises load 210 and a load power source V2.The first end of relay switch A connects the first end of load 210, and second end of this relay switch A connects the positive pole of load power source V2, and the negative pole of this load power source V2 connects the second end of load 210.When the A conducting of this relay switch, this load power source V2 provides operating voltage for this load 210; When this relay switch A disconnects, this load power source V2 is not for this load 210 provides operating voltage.
First better embodiment 100 of control relay circuit comprises a control switch S, power module 10 and a discharge module 30.
This power module 10 provides driving voltage to coil L, comprises one first power supply V1, two diode D1, D2, transistor Q, two electric capacity C1, C2 of a positive-negative-positive and four resistance R1, R2, R3, R4.The positive pole of this first power supply V1 connects the anode of diode D1 respectively, the emitter of transistor Q and the first end of resistance R2, the negative electrode of diode D1 connects the collector electrode of transistor Q and the first end of resistance R1 by electric capacity C1, the negative electrode of diode D1 is also connected to the first end of coil L, second end of resistance R1 connects the negative pole of the first power supply V1, the first end of the second end contact resistance R3 of resistance R2 and the base stage of transistor Q, electric capacity C2 is in parallel with resistance R4 and be connected between second end of resistance R3 and the anode of diode D2, the first end of negative electrode connection control switch S of this diode D2 and second end of coil L, second end of this control switch S connects the negative pole of the first power supply V1.
This discharge module 30 comprises a resistance R5, a diode D3 and a voltage stabilizing didoe D4.The negative electrode first end of contact resistance R5 and the anode of voltage stabilizing didoe D4 respectively of this diode D3, the first end of the negative electrode of this voltage stabilizing didoe D4 and the second end connecting coil L of resistance R5, second end of the anode connecting coil L of this diode D3.
The workflow of the first better embodiment 100 of this control relay circuit is as follows:
During without the need to starting load circuit 200, control switch S disconnects, and between the emitter of transistor Q and base stage, no-voltage is poor, and transistor Q ends, diode D1 conducting, and now the first power supply V1, diode D1, electric capacity C1 and resistance R1 form primary Ioops.First power supply V1 is that electric capacity C1 charges, and the voltage at electric capacity C1 two ends is final equal with the voltage of the first power supply V1.
Work when wanting control load 210, when needing control load power supply V2 to power to load 210, control switch S closes, diode D3 and voltage stabilizing didoe D4 reversal connection and end, diode D2 conducting, the emitter of transistor Q and base stage produce conducting after voltage difference, and this power module 10 produces exciting curent IL, after this exciting curent IL flowing through coil L, this coil L produces magnetic force, relay switch A is closed, and then makes load circuit 200 conducting, this load power source V2 provides operating voltage for this load 210.
In this process, when control switch S disconnects, electric capacity C1 charges, the voltage at electric capacity C1 two ends is final equal with the first power supply V1 voltage, when control switch S closes, the first power supply V1 connects with electric capacity C1, thus makes the voltage at coil L two ends be increased to the twice of the voltage of the first power supply V1, shorten control switch S to be closed into relay switch A and to close the time used, therefore realize the quick-make of relay 40.Due to transistor Q conducting, electric capacity C2 charges, and the voltage when electric capacity C2 two ends rises to the voltage equaling the first power supply V1 gradually, and between the emitter of transistor Q and base stage, no-voltage is poor, and namely transistor Q ends.First power supply V1 continues as coil L by diode D1 and provides voltage, maintains the closure state of relay switch A.
When working without the need to load 210, disconnect control switch S, coil L produces an inverse electromotive force stoping exciting curent IL to reduce, this inverse electromotive force makes diode D3 and voltage stabilizing didoe D4 conducting, exciting curent IL flows through resistance R5, accelerate the consumption of exciting curent IL energy, and then relay switch A is disconnected fast, load circuit 200 disconnects.Because of diode D3 conducting, the voltage at voltage stabilizing didoe D4 two ends is substantially equal to the voltage at coil L two ends, again because the voltage after voltage stabilizing didoe D4 conducting remains constant, therefore this voltage stabilizing didoe D4 can the voltage stabilization at hold-in winding L two ends, and then can ensure that coil L does not damage because of the voltage of sudden change.
Please refer to Fig. 2, the second better embodiment 102 of control relay circuit is substantially identical with the first better embodiment 100, and difference is: the power module 12 of the second better embodiment 102 of control relay circuit also comprises one the 3rd power supply V3.The negative pole of the 3rd power supply V3 connects the positive pole of the first power supply V1, and the positive pole of the 3rd power supply V3 connects the emitter of transistor Q.When control switch S closes, the first power supply V1, the 3rd power supply V3 and electric capacity C1 connect, thus can increase the voltage at coil L two ends, and then realize the quick-make of relay switch A of relay 40.Further, the 3rd power supply V3, only at excitatory pulse wave action cycle internal consumption power, opens and not consumed power under hold mode at control switch S.
Please refer to Fig. 3,3rd better embodiment 104 of control relay circuit is substantially identical with the second better embodiment 102, difference is: the 3rd power supply V3 of the 3rd better embodiment 104 of control relay circuit is much larger than the first power supply V1, its magnitude of voltage is at least greater than the twice of the first power supply V1 magnitude of voltage, and the driver element 24 of power module 14 eliminates the first electric capacity C1 and the first resistance R1, the negative electrode of the first diode D1 directly connects the collector electrode of transistor Q.After control switch S is closed, the first power supply V1, the 3rd power supply V3 connect with the voltage increasing coil L two ends, and then realize the quick-make of relay switch A of relay 40.
The power module 10 of invention relay control circuit 100 can make the first power supply V1 contact with electric capacity C1 after control switch S is closed, the first power supply V1 connects with the 3rd power supply V3 with electric capacity C1 and the 3rd power supply V3 or the first power supply V1, and then the voltage at the coil L two ends of increase relay 40, to realize the quick-make of the switch of relay 40.Control switch S makes the electric current in coil L flow through resistance R5 to accelerate the energy ezpenditure of coil L, and then realizes the quick disconnection of relay switch A after disconnecting.
Claims (7)
1. a control relay circuit, in order to control a relay, this relay comprises a coil and a relay switch, and this control relay circuit comprises:
One control switch; And
One power module, comprise one first power supply, first and second diode, one transistor, first and second electric capacity and first to fourth resistance, the positive pole of this first power supply connects the anode of the first diode respectively, the emitter of transistor and the first end of the first resistance, the negative electrode of the first diode connects the collector electrode of transistor and the first end of the second resistance through the first electric capacity, the negative electrode of the first diode is also connected to the first end of coil, second end of the second resistance connects the negative pole of the first power supply, second end of the first resistance connects the first end of the 3rd resistance and the base stage of transistor, second electric capacity and the 4th resistor coupled in parallel between the second end being connected to the 3rd resistance and the anode of the second diode, the first end of the negative electrode connection control switch of this second diode, second end of the first end connecting coil of this control switch, second end of this control switch connects the negative pole of the first power supply, after control switch closes, this power module provides the driving voltage of coil, relay switch is closed.
2. control relay circuit as claimed in claim 1, it is characterized in that: this control relay circuit also comprises a discharge module, this discharge module comprises one the 3rd diode and one the 5th resistance, the negative electrode of the 3rd diode is connected to the first end of coil through the 5th resistance, second end of the anode connecting coil of the 3rd diode, with the electric energy of release relay after control switch disconnects, relay switch is disconnected.
3. control relay circuit as claimed in claim 1, it is characterized in that: this power module also comprises a second source, the negative pole of second source is connected with the positive pole of the first power supply, and the positive pole of second source is connected with the emitter of transistor.
4. control relay circuit as claimed in claim 2, it is characterized in that: this discharge module also comprises a voltage stabilizing didoe, the anode of this voltage stabilizing didoe connects the negative electrode of the 3rd diode, the first end of the negative electrode connecting coil of this voltage stabilizing didoe.
5. a control relay circuit, in order to control a relay, this relay comprises a coil and a relay switch, and this control relay circuit comprises:
One control switch; And
One power module, comprise one first power supply, one second source, first and second diode, one transistor, one electric capacity and the first to the 3rd resistance, the positive pole of this first power supply connects the anode of the first diode and the negative electrode of second source respectively, the anode of this second source is connected to the emitter of transistor and the first end of the first resistance, the negative electrode of this first diode is connected to the collector electrode of transistor and the first end of coil, second end of the first resistance connects the first end of the second resistance and the base stage of transistor, this electric capacity and the 3rd resistor coupled in parallel are also connected between the second end of the second resistance and the anode of the second diode, the first end of negative electrode connection control switch of this second diode and the second end of coil, second end of the first end connecting coil of this control switch, second end of this control switch connects the negative pole of the first power supply, after control switch closes, this power module provides the driving voltage of coil, relay switch is closed.
6. control relay circuit as claimed in claim 5, it is characterized in that: this control relay circuit also comprises a discharge module, this discharge module comprises one the 3rd diode and one the 4th resistance, the negative electrode of the 3rd diode is connected to the first end of coil through the 4th resistance, second end of the anode connecting coil of the 3rd diode, with the electric energy of release relay after control switch disconnects, relay switch is disconnected.
7. control relay circuit as claimed in claim 6, it is characterized in that: this discharge module also comprises a voltage stabilizing didoe, the anode of this voltage stabilizing didoe connects the negative electrode of the 3rd diode, the first end of the negative electrode connecting coil of this voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410074077.3A CN104900449B (en) | 2014-03-03 | 2014-03-03 | Control relay circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410074077.3A CN104900449B (en) | 2014-03-03 | 2014-03-03 | Control relay circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104900449A true CN104900449A (en) | 2015-09-09 |
| CN104900449B CN104900449B (en) | 2017-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410074077.3A Expired - Fee Related CN104900449B (en) | 2014-03-03 | 2014-03-03 | Control relay circuit |
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| Country | Link |
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| CN (1) | CN104900449B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410098A (en) * | 2021-06-30 | 2021-09-17 | 中车株洲电力机车研究所有限公司 | Safe drive circuit of relay |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3534042A1 (en) * | 1985-09-24 | 1987-03-26 | Siemens Ag | Circuit for operating a relay |
| CN1372289A (en) * | 2001-02-21 | 2002-10-02 | 刘树宝 | Quick protection control switch |
| CN101540242A (en) * | 2009-04-29 | 2009-09-23 | 贵州航天电器股份有限公司 | Energy-saving magnetic latching relay circuit |
| CN102683112A (en) * | 2012-05-10 | 2012-09-19 | 合肥同智机电控制技术股份有限公司 | Energy-saving controller for coil of relay |
| CN202564137U (en) * | 2012-05-07 | 2012-11-28 | 苗健 | Starting circuit module |
| CN103354193A (en) * | 2013-06-26 | 2013-10-16 | 华为技术有限公司 | Relay drive circuit and relay control method |
-
2014
- 2014-03-03 CN CN201410074077.3A patent/CN104900449B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3534042A1 (en) * | 1985-09-24 | 1987-03-26 | Siemens Ag | Circuit for operating a relay |
| CN1372289A (en) * | 2001-02-21 | 2002-10-02 | 刘树宝 | Quick protection control switch |
| CN101540242A (en) * | 2009-04-29 | 2009-09-23 | 贵州航天电器股份有限公司 | Energy-saving magnetic latching relay circuit |
| CN202564137U (en) * | 2012-05-07 | 2012-11-28 | 苗健 | Starting circuit module |
| CN102683112A (en) * | 2012-05-10 | 2012-09-19 | 合肥同智机电控制技术股份有限公司 | Energy-saving controller for coil of relay |
| CN103354193A (en) * | 2013-06-26 | 2013-10-16 | 华为技术有限公司 | Relay drive circuit and relay control method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410098A (en) * | 2021-06-30 | 2021-09-17 | 中车株洲电力机车研究所有限公司 | Safe drive circuit of relay |
| CN113410098B (en) * | 2021-06-30 | 2022-07-19 | 中车株洲电力机车研究所有限公司 | Safe drive circuit of relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104900449B (en) | 2017-10-10 |
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Effective date of registration: 20170301 Address after: Guangdong province Shenzhen city Longhua District Dragon Road No. 83 wing group building 11 floor Applicant after: SCIENBIZIP CONSULTING (SHEN ZHEN) CO., LTD. Address before: 518109 Guangdong city of Shenzhen province Baoan District Longhua Town Industrial Zone tabulaeformis tenth East Ring Road No. 2 two Applicant before: Hongfujin Precise Industry (Shenzhen) Co., Ltd. Applicant before: Hon Hai Precision Industry Co., Ltd. |
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Effective date of registration: 20170725 Address after: 528437 Guangdong province Zhongshan Torch Development Zone, Cheung Hing Road 6 No. 222 north wing trade building room Applicant after: Yun Chuan intellectual property Services Co., Ltd of Zhongshan city Address before: 518109 Guangdong province Shenzhen city Longhua District Dragon Road No. 83 wing group building 11 floor Applicant before: SCIENBIZIP CONSULTING (SHEN ZHEN) CO., LTD. |
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