CN205028114U - Simulation electronic switching circuit of transmissible bipolar signal - Google Patents
Simulation electronic switching circuit of transmissible bipolar signal Download PDFInfo
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- CN205028114U CN205028114U CN201520811250.3U CN201520811250U CN205028114U CN 205028114 U CN205028114 U CN 205028114U CN 201520811250 U CN201520811250 U CN 201520811250U CN 205028114 U CN205028114 U CN 205028114U
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- resistance
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- electronic switching
- analog switch
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Abstract
The utility model provides a simulation electronic switching circuit of transmissible bipolar signal, the little the control unit's of MCU of this circuit a IO end connecting resistance R1's one end, audion Q1's base is connected to resistance R1's the other end, audion Q1's projecting pole connects + the 5V power, audion Q1's collecting electrode divides two the tunnel, connect resistance R2's one end all the way, another termination - 5V power of resistance R2, another way of audion Q1's collecting electrode connects CD4066 analog switch's 13 foot control ends, receive the CD4066 analog switch's of this control end control 1 foot input and input vi and the output vo that this circuit is then regarded as respectively to 2 foot outputs. Can only transmit the positive signal with traditional CD4066 application circuit and compare, this circuit can transmit the bipolar signal, can satisfy more application scenarios.
Description
Technical field
The utility model relates to a kind of analog electronic switching circuit, and 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.
Utility model content
The purpose of this utility model is to provide a kind of analog electronic switching circuit of the bipolar signal transmitted based on CD4066, can only transmit positive signal, can not transmit the problem of bipolar signal to solve traditional C D4066 application circuit.
The concrete technical scheme that the utility model is taked 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.
The beneficial effects of the utility model are: 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 the utility model circuit diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
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 utility model 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 |
|---|---|---|---|
| CN201520811250.3U CN205028114U (en) | 2015-10-20 | 2015-10-20 | Simulation electronic switching circuit of transmissible bipolar signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520811250.3U CN205028114U (en) | 2015-10-20 | 2015-10-20 | Simulation electronic switching circuit of transmissible bipolar signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028114U true CN205028114U (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520811250.3U Expired - Fee Related CN205028114U (en) | 2015-10-20 | 2015-10-20 | Simulation electronic switching circuit of transmissible bipolar signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205028114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223873A (en) * | 2015-10-20 | 2016-01-06 | 广西职业技术学院 | A kind of analog electronic switching circuit transmitting bipolar signal |
-
2015
- 2015-10-20 CN CN201520811250.3U patent/CN205028114U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223873A (en) * | 2015-10-20 | 2016-01-06 | 广西职业技术学院 | A kind of analog electronic switching circuit transmitting bipolar signal |
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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: 20160210 Termination date: 20191020 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |