CN203243296U - Circuit for controlling high-voltage charging power supply switch with low-voltage signal - Google Patents
Circuit for controlling high-voltage charging power supply switch with low-voltage signal Download PDFInfo
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- CN203243296U CN203243296U CN 201320306995 CN201320306995U CN203243296U CN 203243296 U CN203243296 U CN 203243296U CN 201320306995 CN201320306995 CN 201320306995 CN 201320306995 U CN201320306995 U CN 201320306995U CN 203243296 U CN203243296 U CN 203243296U
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- triode
- resistance
- resistor
- power supply
- voltage
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Abstract
The utility model discloses a circuit for controlling a high-voltage charging power supply switch with a low-voltage signal. The circuit comprises a wireless control signal, a triode T1, a triode T2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5 and a charging power supply, wherein the wireless control signal, the resistor R1, the triode T1, the triode T2, the resistor R3, the resistor R4 and the charging power supply are sequentially connected in series, the resistor R4 is connected to a collector D of the triode T2, a collector C of the triode T1 is connected with a base of the triode T2, the triode T2, the resistor R3 and the resistor R4 are connected in parallel with the resistor R5, a charging switch control signal is input between the resistor R3 and the resistor R4, and the resistor R2 and the triode T1 are connected in parallel. By adopting the structure, the requirement of controlling a high-voltage charging power supply switch with a low-voltage wireless signal is satisfied.
Description
Technical field
The utility model relates to switching circuit, is specifically related to low voltage signal to the high-voltage charge power on-off control circuit.
Background technology
UART communication is a kind of transport communication of serial data bus, is that the parallel data transformed into serial data that will receive transmits, and is mainly used in asynchronous communication.This bus two-way communication can realize full duplex transmission and reception.In embedded design, UART communicates by letter with auxiliary equipment in order to main frame, such as communicating by letter and communicating by letter with PC between automobile audio and the external AP.At communication technical field, often can use charging port multiplexing, interfere with each other for avoiding the signal between the unlike signal in UART communication and switch control because charging port is multiplexing, can use wireless signal that charge power supply is carried out switch control.We know that high voltage refers to the voltage that is higher than 250V, and the safe voltage of human body is 36V, safe current be 10mA once, the safety that overtension can harmful to human.But for actual needs often can use high voltage, and also can't use the wireless signal of low voltage in the prior art in the circuit, the charge power supply switch of control high voltage.
The utility model content
The utility model has overcome the deficiencies in the prior art, provide low voltage signal to the high-voltage charge power on-off control circuit, has realized using the requirement of charge power supply switch of the wireless signal control high voltage of low voltage.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: low voltage signal is to the high-voltage charge power on-off control circuit, comprise wireless control signal, triode T1, triode T2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5 and charge power supply, described wireless control signal, resistance R 1, triode T1, triode T2, resistance R 3, resistance R 4 and charge power supply are connected successively, resistance R 4 wherein is connected on the collector electrode D of triode T2, and the collector electrode C of triode T1 is connected with the basis set of triode T2; Described triode T2, resistance R 3 and resistance R 4 are all in parallel with resistance R 3, input charge switch control signal between resistance R 3 and resistance R 4; Described resistance R 2 is in parallel with triode T1.
Further, the equal ground connection of emitter E of described resistance R 2 and triode T1.
Further, the emitter E ground connection of described triode T2.
Further, described resistance R 1 end of being connected with resistance R all is connected with the basis set B of triode T1.
Further, described triode T1 and triode T2 are the NPN pipe.
Further, described resistance R 2 is 75 kilo-ohms.
Compared with prior art, the beneficial effects of the utility model are: in the utility model, the control of charge power supply switch only needs a high level that is not less than charge power supply voltage, directly uses wireless control signal that the charge power supply switch is controlled, and the voltage of wireless signal is inadequate.This design has successfully realized the control of wireless signal to the charge power supply switch by two NPN triode T1 and T2 conversion.And conversion speed is fast, and action is not accurately almost delayed time.
Description of drawings
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further elaborated, embodiment of the present utility model is not limited to this.
Embodiment:
As shown in Figure 1, the utility model comprises wireless control signal, triode T1, triode T2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5 and charge power supply.The wireless control signal of the present embodiment, resistance R 1, triode T1, triode T2, resistance R 3, resistance R 4 and charge power supply are connected successively, resistance R 4 wherein is connected on the collector electrode D of triode T2, the collector electrode C of triode T1 is connected with the basis set of triode T2, the equal ground connection of emitter E of resistance R 2 and triode T1.The end that resistance R 1 is connected with resistance R all is connected with the basis set B of triode T1.Triode T1 and triode T2 are the NPN pipe.Resistance R 2 is 75 kilo-ohms.The triode T2 of the present embodiment, resistance R 3 and resistance R 4 are all in parallel with resistance R 3, input charge switch control signal between resistance R 3 and resistance R 4.Resistance R 2 wherein is in parallel with triode T1.The emitter E ground connection of triode T2.
The base stage of wireless control signal access NPN triode T1, when having wireless control signal to produce, the base stage input high level of T1, emitter-base bandgap grading and collector electrode conducting, collector voltage pulled down to ground, makes the base stage level of NPN triode T2 be pulled down to ground.After the base stage of T2 dragged down, its collector electrode and emitter-base bandgap grading turn-offed, and access the charge switch control signal voltage on its collector electrode, are pulled to the voltage of charge power supply.Realized in this way the wireless control signal of low-voltage, converted to for high-tension charge switch control signal.
Just can realize this utility model as mentioned above.
Claims (6)
1. low voltage signal is to the high-voltage charge power on-off control circuit, it is characterized in that: comprise wireless control signal, triode T1, triode T2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5 and charge power supply, described wireless control signal, resistance R 1, triode T1, triode T2, resistance R 3, resistance R 4 and charge power supply are connected successively, resistance R 4 wherein is connected on the collector electrode D of triode T2, and the collector electrode C of triode T1 is connected with the basis set of triode T2; Described triode T2, resistance R 3 and resistance R 4 are all in parallel with resistance R 3, input charge switch control signal between resistance R 3 and resistance R 4; Described resistance R 2 is in parallel with triode T1.
2. low voltage signal according to claim 1 is characterized in that the high-voltage charge power on-off control circuit: the equal ground connection of emitter E of described resistance R 2 and triode T1.
3. low voltage signal according to claim 1 is characterized in that the high-voltage charge power on-off control circuit: the emitter E ground connection of described triode T2.
4. low voltage signal according to claim 1 is characterized in that the high-voltage charge power on-off control circuit: the end that described resistance R 1 is connected with resistance R all is connected with the basis set B of triode T1.
5. low voltage signal according to claim 1 is characterized in that the high-voltage charge power on-off control circuit: described triode T1 and triode T2 are the NPN pipe.
6. low voltage signal according to claim 1 is characterized in that the high-voltage charge power on-off control circuit: described resistance R 2 is 75 kilo-ohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320306995 CN203243296U (en) | 2013-05-31 | 2013-05-31 | Circuit for controlling high-voltage charging power supply switch with low-voltage signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320306995 CN203243296U (en) | 2013-05-31 | 2013-05-31 | Circuit for controlling high-voltage charging power supply switch with low-voltage signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203243296U true CN203243296U (en) | 2013-10-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320306995 Expired - Fee Related CN203243296U (en) | 2013-05-31 | 2013-05-31 | Circuit for controlling high-voltage charging power supply switch with low-voltage signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203243296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281061A (en) * | 2013-05-31 | 2013-09-04 | 成都锐奕信息技术有限公司 | Power switch control circuit |
-
2013
- 2013-05-31 CN CN 201320306995 patent/CN203243296U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281061A (en) * | 2013-05-31 | 2013-09-04 | 成都锐奕信息技术有限公司 | Power switch control circuit |
| CN103281061B (en) * | 2013-05-31 | 2015-09-09 | 成都锐奕信息技术有限公司 | Power on-off control circuit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20160531 |