CN206993087U - A kind of signal conversion interface circuit - Google Patents
A kind of signal conversion interface circuit Download PDFInfo
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- CN206993087U CN206993087U CN201720596774.4U CN201720596774U CN206993087U CN 206993087 U CN206993087 U CN 206993087U CN 201720596774 U CN201720596774 U CN 201720596774U CN 206993087 U CN206993087 U CN 206993087U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000009977 dual effect Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- WYROLENTHWJFLR-ACLDMZEESA-N queuine Chemical compound C1=2C(=O)NC(N)=NC=2NC=C1CN[C@H]1C=C[C@H](O)[C@@H]1O WYROLENTHWJFLR-ACLDMZEESA-N 0.000 description 1
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Abstract
A kind of signal conversion interface circuit is the utility model is related to, belongs to signal processing circuit technical field.The utility model includes power supply VCC2, electric capacity C, resistance R1, R2, R3, R4, voltage-regulator diode Dw, triode Q；Wherein voltage-regulator diode Dw is used to screen signal.Wherein resistance R3 is loop resistance, makes voltage-regulator diode Dw normal works.Resistance R4 is divider resistance.Electric capacity C is filter capacitor, filters out the spike in input signal, reduces High-frequency Interference.The utility model is solved in the case of dual power supply or multiple feed, front stage circuits and late-class circuit level mismatch cause late-class circuit can not effective detection process signal the problem of.Not only element is less for the circuit, reliable operation, can also use in the circuit of mains voltage variations, makes the detection process of signal become easily and effectively, while has and certain remove interference performance.It is that a kind of limitation is small, there is the signal conversion interface circuit compared with strong adaptability and practicality.
Description
Technical field
A kind of signal conversion interface circuit is the utility model is related to, belongs to signal processing circuit technical field.
Background technology
Many devices in electronic circuit be present needs dual power supply or multiple feed.Due to the difference of power supply, so that
Signal in circuit is had an impact.The amplitude of signal changes with the change of zero reference point so that front stage circuits and late-class circuit
Level mismatches, late-class circuit can not effective detection process signal, influence the normal operation of device.Can although having chip at present
To realize level conversion, but it is only for some specific standard digital chips and specific magnitude of voltage, in supply voltage
Can not normal work in the case of being not belonging to critical field.To eliminate influence of the different electrical power to signal, a kind of signal conversion connects
Mouth circuit is suggested.
The content of the invention
The technical problems to be solved in the utility model is：The utility model provides a kind of signal conversion interface circuit, is used for
Dual power supply or multiple feed are solved to effect of signals, so as to cause front stage circuits and the unmatched problem of late-class circuit level.
Front stage circuits signal makes it match with late-class circuit level by changing signal amplitude after signal conversion interface circuit, can be with
By effective detection process.The output signal of signal conversion interface circuit is consistent with frequency input signal, into inverse relationship.
Technical solutions of the utility model are：A kind of signal conversion interface circuit, including power supply VCC2, electric capacity C, resistance R1, electricity
Hinder R2, resistance R3, resistance R4, voltage-regulator diode Dw, triode Q；Front stage circuits signal UiVoltage-regulator diode Dw negative electrodes are inputted, surely
Press diode anode connecting resistance R4 one end, the resistance R4 other end base stage with triode Q, electric capacity C one end and resistance respectively
R3 one end is connected, and the electric capacity C other end and the resistance R3 other end are connected into triode Q emitter stage, triode Q emitter stage
Ground connection, power supply VCC2Triode Q colelctor electrode and resistance R1 one end are connected into simultaneously by resistance R2, the resistance R1 other end is
Output end Uo。
The beneficial effects of the utility model are：The utility model provides a kind of signal conversion interface circuit, solves double
In the case of power supply or multiple feed, front stage circuits and late-class circuit level, which mismatch, causes late-class circuit can not be at effective detection
The problem of managing signal.Not only element is less for the circuit, reliable operation, can also use in the circuit of mains voltage variations, increases
Strong adaptability, makes the detection process of signal become easily and effectively, at the same have it is certain remove interference performance, reduce signal use
Limitation, expanded use range, there is stronger practicality.
Brief description of the drawings
Fig. 1 is the utility model circuit theory diagrams,
Wherein C is polarity free capacitor, and R1, R2, R3, R4 are resistance, and Dw is voltage-regulator diode, and Q is triode, VCC2For electricity
Source, UiFor input, UoFor output end；
Fig. 2 is UiInput oscillogram and UoOutput end oscillogram.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the utility model is described in further detail.
Embodiment 1：As shown in figure 1, a kind of signal conversion interface circuit, including power supply VCC2, electric capacity C, resistance R1, resistance
R2, resistance R3, resistance R4, voltage-regulator diode Dw, triode Q；
Front stage circuits signal UiInput voltage-regulator diode Dw negative electrodes, voltage-regulator diode anode connecting resistance R4 one end, resistance R4
One end of the other end base stage with triode Q, electric capacity C one end and resistance R3 respectively be connected, electric capacity the C other end and resistance
The R3 other end is connected into triode Q emitter stage, triode Q grounded emitter, power supply VCC2Three are connected into by resistance R2 simultaneously
Pole pipe Q colelctor electrode and resistance R1 one end, the resistance R1 other end is output end Uo。
As shown in Fig. 2 input signal UiIt is respectively positioned on above zero point, and certain High-frequency Interference is present；Output signal UoWaveform
For a square wave, wherein low level be 0, high level VEE, while eliminated High-frequency Interference.
Operation principle of the present utility model is：
It is GND for dual power supply or multiple feed circuit the utility model zero reference point, as shown in Fig. 2 for
Input signal UiIts high level voltage is VCC1, low level voltage VEE, VEEMore than zero.Voltage-regulator diode Dw voltage stabilizing value is big
It is small to be set as slightly above VEESo that amplitude could be passed through higher than the signal of voltage stabilizing value by voltage-regulator diode Dw in input signal
Resistance R4 enters triode Q base stage, so that triode ON, output end UoExport low level and be equal to zero.In input signal
When amplitude is less than voltage stabilizing value, triode is off state, output end UoOutput high level is equal to VCC2, VCC2Value can be after
Level circuit needs autonomous setting.Wherein resistance R3 is loop resistance, makes voltage-regulator diode Dw normal works.Resistance R4 is partial pressure electricity
Resistance.Electric capacity C is filter capacitor, filters out the spike in input signal, reduces High-frequency Interference.
Specific embodiment of the utility model is explained in detail above in conjunction with accompanying drawing, but the utility model and unlimited
In above-described embodiment, in those of ordinary skill in the art's possessed knowledge, the utility model can also not departed from
Various changes can be made on the premise of objective.
Claims (2)
- A kind of 1. signal conversion interface circuit, it is characterised in that：Including power supply VCC2, electric capacity C, resistance R1, resistance R2, resistance R3, Resistance R4, voltage-regulator diode Dw, triode Q；Front stage circuits signal UiVoltage-regulator diode Dw negative electrodes are inputted, voltage-regulator diode anode connecting resistance R4 one end, resistance R4's is another One end of the end base stage with triode Q, electric capacity C one end and resistance R3 respectively is connected, and the electric capacity C other end and resistance R3's is another One end is connected into triode Q emitter stage, triode Q grounded emitter, power supply VCC2Triode Q is connected into by resistance R2 simultaneously Colelctor electrode and resistance R1 one end, the resistance R1 other end is output end Uo。
- 2. signal conversion interface circuit according to claim 1, it is characterised in that：The resistance R3 is loop resistance, is made Voltage-regulator diode Dw normal works, resistance R4 are divider resistance, and electric capacity C is filter capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720596774.4U CN206993087U (en) | 2017-05-26 | 2017-05-26 | A kind of signal conversion interface circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720596774.4U CN206993087U (en) | 2017-05-26 | 2017-05-26 | A kind of signal conversion interface circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206993087U true CN206993087U (en) | 2018-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720596774.4U Expired - Fee Related CN206993087U (en) | 2017-05-26 | 2017-05-26 | A kind of signal conversion interface circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206993087U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358694A (en) * | 2018-11-14 | 2019-02-19 | 苏州绿控传动科技股份有限公司 | A kind of boot configuration circuit that can be turned down according to supply voltage |
| CN109398475A (en) * | 2018-12-04 | 2019-03-01 | 厦门嘉裕德汽车电子科技有限公司 | A kind of anti-crash protection circuit |
| CN109491431A (en) * | 2018-11-14 | 2019-03-19 | 苏州绿控传动科技股份有限公司 | A kind of boot configuration circuit according to supply voltage adjustable height |
-
2017
- 2017-05-26 CN CN201720596774.4U patent/CN206993087U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358694A (en) * | 2018-11-14 | 2019-02-19 | 苏州绿控传动科技股份有限公司 | A kind of boot configuration circuit that can be turned down according to supply voltage |
| CN109491431A (en) * | 2018-11-14 | 2019-03-19 | 苏州绿控传动科技股份有限公司 | A kind of boot configuration circuit according to supply voltage adjustable height |
| CN109398475A (en) * | 2018-12-04 | 2019-03-01 | 厦门嘉裕德汽车电子科技有限公司 | A kind of anti-crash protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 Termination date: 20190526 |