CN105223873A - A kind of analog electronic switching circuit transmitting bipolar signal - Google Patents
A kind of analog electronic switching circuit transmitting bipolar signal Download PDFInfo
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- CN105223873A CN105223873A CN201510678699.1A CN201510678699A CN105223873A CN 105223873 A CN105223873 A CN 105223873A CN 201510678699 A CN201510678699 A CN 201510678699A CN 105223873 A CN105223873 A CN 105223873A
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- triode
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- Automation & Control Theory (AREA)
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Abstract
The invention provides a kind of analog electronic switching circuit transmitting bipolar signal, an I/O of the MCU micro-control unit of this circuit holds one end of contact resistance R1, the other end of resistance R1 connects the base stage of triode Q1, the emitter of triode Q1 connects+5V power supply, the collector of triode Q1 divides two-way, one end of one road connecting resistance R2, another termination-5V power supply of resistance R2, another road of the collector of triode Q1 connects 13 pin control ends of CD4066 analog switch, 1 pin input end of the CD4066 analog switch controlled by this control end and 2 pin output terminals are then respectively as input end Vi and the output end vo of this circuit.Can only transmit positive signal with traditional C D4066 application circuit to compare, this circuit can transmit bipolar signal, can meet more application scenario.
Description
Technical field
The present invention relates to a kind of analog electronic switching circuit, specifically a kind of analog electronic switching circuit transmitting bipolar signal, belongs to electronic technology field.
Background technology
CD4066 is four conventional road simulant electronic switches, and in the application circuit that it is traditional, its power supply is+5V single supply usually, and the high level of its switch controlling signal is+5V, and low level is 0V, and with this understanding, CD4066 can only transmit positive signal.But in a lot of application scenario, need to transmit bipolar signal.We know, when CD4066 adopts+5V ,-5V dual power supply, its switch controlling signal high level is set to+5V, and low level is set to-5V, then the bipolar signal voltage (﹢ 5V ~ ﹣ 5V) that input voltage is symmetrical in 0V all can transmit.For this reason, CD4066 be made to transmit bipolar signal, we need to improve the power supply of CD4066 and control level.
Summary of the invention
The object of this invention is to provide a kind of analog electronic switching circuit of the bipolar signal transmitted based on CD4066, can only positive signal be transmitted to solve traditional C D4066 application circuit, the problem of bipolar signal can not be transmitted.
The concrete technical scheme that the present invention takes is as follows:
A kind of analog electronic switching circuit transmitting bipolar signal, it is characterized in that: this circuit comprises MCU micro-control unit, CD4066 analog switch, PNP triode Q1, resistance R1 and R2, wherein an I/O of MCU micro-control unit holds one end of contact resistance R1, the other end of resistance R1 connects the base stage of triode Q1, the emitter of triode Q1 connects+5V power supply, the collector of triode Q1 divides two-way, one end of one road connecting resistance R2, another termination-5V power supply of resistance R2, another road of the collector of triode Q1 connects 13 pin control ends of CD4066 analog switch, 1 pin input end of the CD4066 analog switch controlled by this control end and 2 pin output terminals are then respectively as input end Vi and the output end vo of this circuit.
Described MCU micro-control unit can adopt 89C51 single-chip microcomputer.
Beneficial effect of the present invention is: this analog electronic switching circuit adopts triode common emitter circuit as phase inverter, the I/O of MCU micro-control unit output+5V high level and 0V low level are transformed to-5V low level and+5V high level, and be loaded on the control end of CD4066 analog switch, realize the function of transmission bipolar signal thus, thus solve traditional C D4066 application circuit and can only transmit positive signal, the problem of bipolar signal can not be transmitted.Therefore this circuit can meet more application scenario.
Accompanying drawing explanation
Fig. 1 is traditional C D4066 application circuit.
Fig. 2 is circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Figure 1 shows that traditional CD4066 application circuit, in the circuit, the high level of switch controlling signal is+5V, and low level is 0V, and with this understanding, CD4066 can only transmit positive signal.
The analog electronic switching circuit transmitting bipolar signal of the present invention as shown in Figure 2, this circuit
Comprise MCU micro-control unit, CD4066 analog switch, PNP triode Q1, resistance R1 and R2, wherein an I/O of MCU micro-control unit holds one end of contact resistance R1, the other end of resistance R1 connects the base stage of triode Q1, the emitter of triode Q1 connects+5V power supply, the collector of triode Q1 divides two-way, one end of one road connecting resistance R2, another termination-5V power supply of resistance R2, another road of the collector of triode Q1 connects 13 pin control ends of CD4066 analog switch, 1 pin input end of the CD4066 analog switch controlled by this control end and 2 pin output terminals are then respectively as input end Vi and the output end vo of this circuit.
During this circuit working, when the I/O end of MCU micro-control unit exports+5V high level, triode Q1 not conducting, what be carried in CD4066 analog switch 13 pin control end is-5V low level; When the I/O end of MCU micro-control unit exports 0V low level, triode Q1 conducting, what be carried in CD4066 analog switch control end is+5V high level.With this understanding, CD4066 analog switch all can transmit for bipolarity input voltage signal.
Claims (2)
1. one kind can transmit the analog electronic switching circuit of bipolar signal, it is characterized in that: this circuit comprises MCU micro-control unit, CD4066 analog switch, PNP triode Q1, resistance R1 and R2, wherein an I/O of MCU micro-control unit holds one end of contact resistance R1, the other end of resistance R1 connects the base stage of triode Q1, the emitter of triode Q1 connects+5V power supply, the collector of triode Q1 divides two-way, one end of one road connecting resistance R2, another termination-5V power supply of resistance R2, another road of the collector of triode Q1 connects 13 pin control ends of CD4066 analog switch, 1 pin input end of the CD4066 analog switch controlled by this control end and 2 pin output terminals are then respectively as input end Vi and the output end vo of this circuit.
2. analog electronic switching circuit according to claim 1, is characterized in that: described MCU micro-control unit adopts 89C51 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510678699.1A CN105223873A (en) | 2015-10-20 | 2015-10-20 | A kind of analog electronic switching circuit transmitting bipolar signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510678699.1A CN105223873A (en) | 2015-10-20 | 2015-10-20 | A kind of analog electronic switching circuit transmitting bipolar signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105223873A true CN105223873A (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510678699.1A Pending CN105223873A (en) | 2015-10-20 | 2015-10-20 | A kind of analog electronic switching circuit transmitting bipolar signal |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203385495U (en) * | 2013-08-12 | 2014-01-08 | 浙江工商职业技术学院 | Multipath temperature testing system |
| CN103884867A (en) * | 2014-03-27 | 2014-06-25 | 北京航天控制仪器研究所 | Magnetic suspension centering system of three-floated-gyroscope accelerometer |
| CN203984404U (en) * | 2014-08-17 | 2014-12-03 | 重庆尊来科技有限责任公司 | The change code radiating circuit of easily producing |
| US20150116880A1 (en) * | 2013-10-31 | 2015-04-30 | Hon Hai Precision Industry Co., Ltd. | Inductor protection device |
| CN104614569A (en) * | 2015-01-05 | 2015-05-13 | 湖南工业大学 | Adaptive transmitter current average value device and implementation method |
| CN205028114U (en) * | 2015-10-20 | 2016-02-10 | 广西职业技术学院 | Simulation electronic switching circuit of transmissible bipolar signal |
-
2015
- 2015-10-20 CN CN201510678699.1A patent/CN105223873A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203385495U (en) * | 2013-08-12 | 2014-01-08 | 浙江工商职业技术学院 | Multipath temperature testing system |
| US20150116880A1 (en) * | 2013-10-31 | 2015-04-30 | Hon Hai Precision Industry Co., Ltd. | Inductor protection device |
| CN103884867A (en) * | 2014-03-27 | 2014-06-25 | 北京航天控制仪器研究所 | Magnetic suspension centering system of three-floated-gyroscope accelerometer |
| CN203984404U (en) * | 2014-08-17 | 2014-12-03 | 重庆尊来科技有限责任公司 | The change code radiating circuit of easily producing |
| CN104614569A (en) * | 2015-01-05 | 2015-05-13 | 湖南工业大学 | Adaptive transmitter current average value device and implementation method |
| CN205028114U (en) * | 2015-10-20 | 2016-02-10 | 广西职业技术学院 | Simulation electronic switching circuit of transmissible bipolar signal |
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Application publication date: 20160106 |