CN102723946A - Signal isolation control circuit - Google Patents
Signal isolation control circuit Download PDFInfo
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- CN102723946A CN102723946A CN2011100792384A CN201110079238A CN102723946A CN 102723946 A CN102723946 A CN 102723946A CN 2011100792384 A CN2011100792384 A CN 2011100792384A CN 201110079238 A CN201110079238 A CN 201110079238A CN 102723946 A CN102723946 A CN 102723946A
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- triode
- resistance
- power supply
- access point
- supply access
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Abstract
The present invention relates to a signal isolation control circuit. An end of a first resistor is connected with a signal input point. The other end of the first resistor is connected with a base electrode of a first triode. An emitter of the first triode is connected with an anode of a power supply access point. A collector electrode of the first triode is orderly connected with a second resistor and a third resistor in series and then is connected with a cathode of the power supply access point. A base electrode of a second triode is connected between the second resistor and the third resistor. An emitter of the second triode is connected with the cathode of the power supply access point. A collector electrode of the second triode is connected with an input point of a terminal. Another input point of the terminal is connected with the anode of the power supply access point. Compared with the prior art, the signal isolation control circuit has a simple structure, and a condition that a whole system can not work due to a fault of a terminal is solved.
Description
Technical field
The present invention relates to a kind of signal control circuit, especially relate to a kind of Signal Spacing control circuit.
Background technology
In control system, regular meeting runs into the situation that a control signal will be controlled a lot of terminals.Therefore traditional control circuit realizes that a signal arises at the historic moment to the technology of the isolated controlling at a plurality of terminals because unreasonable design often occurs making the inoperable situation of whole system because of the fault at certain terminal.
Summary of the invention
The object of the invention is exactly to provide a kind of simple in structure for the defective that overcomes above-mentioned prior art existence, and has solved the Signal Spacing control circuit that makes the inoperable situation of whole system because of the fault at certain terminal.
The object of the invention can be realized through following technical scheme: the Signal Spacing control circuit; It is characterized in that; This circuit comprises signal input point, signal output point, power supply access point, first resistance, second resistance, the 3rd resistance, first triode, second triode, at least one terminal; One end of described first resistance is connected with the signal input point; The other end of first resistance is connected with the base stage of first triode, and the emitter of described first triode is connected with the positive pole of power supply access point, and the collector electrode of first triode is connected successively with second resistance, the 3rd resistance and then is connected with the negative pole of power supply access point; Be connected between the base stage of described second triode and second resistance, the 3rd resistance; The emitter of second triode is connected with the negative pole of power supply access point, and the collector electrode of second triode is connected with the input point at terminal, and another input point of described terminal is connected with the positive pole of power supply access point.
Described first triode is the positive-negative-positive triode.
Described second triode is a NPN type triode.
Described terminal comprises optocoupler; This optocoupler comprises input, output; An input of described optocoupler is connected with the positive pole of power supply access point through inserting resistance, and another input of optocoupler is connected with the collector electrode of second triode, and an output of described optocoupler is connected with the signal output point; Another output of optocoupler is connected with the negative pole of power supply access point, and described signal output point is connected with the positive pole of power supply access point through picking out resistance.
Compared with prior art, circuit structure of the present invention simply, only just can realize that with several elements a control signal controls a plurality of terminals, and the fault that has solved because of certain terminal makes the inoperable situation of whole system.
Description of drawings
Fig. 1 is that circuit of the present invention connects sketch map.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
Embodiment
As shown in Figure 1, Signal Spacing control circuit, this circuit comprise signal input point, signal output point, power supply access point, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the first triode Q1, the second triode Q2, terminal U1.Terminal U1 comprises optocoupler, and this optocoupler comprises input, output.One end of first resistance R 1 is connected with the signal input point, and the other end of first resistance R 1 is connected with the base stage of the first triode Q1.The emitter of the first triode Q1 is connected with the positive pole of power supply access point, and the collector electrode of the first triode Q1 and second resistance R 2, the 3rd resistance R 3 back of connecting successively is connected with the negative pole of power supply access point.Be connected between the base stage of the second triode Q2 and second resistance R 2, the 3rd resistance R 3, the emitter of the second triode Q2 is connected with the negative pole of power supply access point, and the collector electrode of the second triode Q2 is connected with an input of optocoupler.Another input of optocoupler is connected with the positive pole of power supply access point through inserting resistance R 4.An output of optocoupler is connected with the signal output point, and another output of optocoupler is connected with the negative pole of power supply access point.The signal output point is connected with the positive pole of power supply access point through picking out resistance R 5.First triode is the positive-negative-positive triode.Second triode is a NPN type triode.When the terminal has when a plurality of, its connected mode is with terminal U1.
Claims (4)
1. Signal Spacing control circuit; It is characterized in that; This circuit comprises signal input point, signal output point, power supply access point, first resistance, second resistance, the 3rd resistance, first triode, second triode, at least one terminal; One end of described first resistance is connected with the signal input point; The other end of first resistance is connected with the base stage of first triode, and the emitter of described first triode is connected with the positive pole of power supply access point, and the collector electrode of first triode is connected successively with second resistance, the 3rd resistance and then is connected with the negative pole of power supply access point; Be connected between the base stage of described second triode and second resistance, the 3rd resistance; The emitter of second triode is connected with the negative pole of power supply access point, and the collector electrode of second triode is connected with the input point at terminal, and another input point of described terminal is connected with the positive pole of power supply access point.
2. Signal Spacing control circuit according to claim 1 is characterized in that, described first triode is the positive-negative-positive triode.
3. Signal Spacing control circuit according to claim 1 is characterized in that, described second triode is a NPN type triode.
4. Signal Spacing control circuit according to claim 1; It is characterized in that; Described terminal comprises optocoupler, and this optocoupler comprises input, output, and an input of described optocoupler is connected with the positive pole of power supply access point through inserting resistance; Another input of optocoupler is connected with the collector electrode of second triode; An output of described optocoupler is connected with the signal output point, and another output of optocoupler is connected with the negative pole of power supply access point, and described signal output point is connected with the positive pole of power supply access point through picking out resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110079238.4A CN102723946B (en) | 2011-03-30 | 2011-03-30 | Signal isolation control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110079238.4A CN102723946B (en) | 2011-03-30 | 2011-03-30 | Signal isolation control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102723946A true CN102723946A (en) | 2012-10-10 |
| CN102723946B CN102723946B (en) | 2014-10-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110079238.4A Active CN102723946B (en) | 2011-03-30 | 2011-03-30 | Signal isolation control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102723946B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455512A (en) * | 2003-06-06 | 2003-11-12 | 厦门宏发电声有限公司 | Low-voltage triggered constant-current source input solid relay |
| WO2007042436A1 (en) * | 2005-10-12 | 2007-04-19 | BSH Bosch und Siemens Hausgeräte GmbH | Interface arrangement with galvanic separation for connection to an electrical appliance, more particularly a household appliance |
| CN101976993A (en) * | 2010-11-11 | 2011-02-16 | 苏州合欣美电子科技有限公司 | Motor positive/negative rotation circuit for eco-house |
| CN201758271U (en) * | 2010-06-25 | 2011-03-09 | 新宝电机(东莞)有限公司 | Standby protection circuit without optical coupler |
| CN201985840U (en) * | 2011-03-30 | 2011-09-21 | 上海军远通信设备有限公司 | Circuit capable of realizing isolation control for multiple terminals by single signal |
-
2011
- 2011-03-30 CN CN201110079238.4A patent/CN102723946B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455512A (en) * | 2003-06-06 | 2003-11-12 | 厦门宏发电声有限公司 | Low-voltage triggered constant-current source input solid relay |
| WO2007042436A1 (en) * | 2005-10-12 | 2007-04-19 | BSH Bosch und Siemens Hausgeräte GmbH | Interface arrangement with galvanic separation for connection to an electrical appliance, more particularly a household appliance |
| CN201758271U (en) * | 2010-06-25 | 2011-03-09 | 新宝电机(东莞)有限公司 | Standby protection circuit without optical coupler |
| CN101976993A (en) * | 2010-11-11 | 2011-02-16 | 苏州合欣美电子科技有限公司 | Motor positive/negative rotation circuit for eco-house |
| CN201985840U (en) * | 2011-03-30 | 2011-09-21 | 上海军远通信设备有限公司 | Circuit capable of realizing isolation control for multiple terminals by single signal |
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| Publication number | Publication date |
|---|---|
| CN102723946B (en) | 2014-10-15 |
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