CN205232007U - On -vehicle switching power supply operating condition indicating circuit - Google Patents
On -vehicle switching power supply operating condition indicating circuit Download PDFInfo
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- CN205232007U CN205232007U CN201521018557.4U CN201521018557U CN205232007U CN 205232007 U CN205232007 U CN 205232007U CN 201521018557 U CN201521018557 U CN 201521018557U CN 205232007 U CN205232007 U CN 205232007U
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- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses an on -vehicle switching power supply operating condition indicating circuit, the secondary anode and the anodal of diode of transformer are connected, and the secondary negative terminal and the negative pole of electric capacity of transformer are connected and ground connection, and the positive pole of electric capacity is connected with the negative pole of diode and the one end of first resistance respectively, this circuit utilizes the transformer working characteristics that switching power supply itself possesses, at status signal sampling circuit of the inside increase of power, for can accurate reflection power whole operating condition, draw sampled signal the secondary forward transportation output of a little placing main power transformer, be connected to control circuit through a diode, control circuit received the voltage signal that the diode transmission was come, provide the signal input part of signal to the customer equipment after alternateing, the operating condition who carries out the power instructs. This circuit is through adding several little devices to the required function has been realized to very low cost, has very high practical value.
Description
Technical field:
The utility model relates to vehicle-mounted switch power technology field, is specifically related to a kind of vehicle-mounted Switching Power Supply working state indicating circuit.
Background technology:
Many times whether Switching Power Supply needs detection system operating state normal, and client needs to export a normal state signal after power supply normally starts, if power work is abnormal, then no signal exports.On Vehicles Collected from Market, this type of application is the signal input part directly output end voltage signal being received customer equipment mostly, when power supply normally works, voltage signal is had to be given to client device, no-output voltage during abnormity of power supply, client device no signal inputs, and can meet customer requirement.
And output is equipped with to the vehicular applications occasion of 12V A-battery, this kind of method can lose effect, and reason is power output end is in parallel use with battery, and no matter whether power work is normal, client always has battery voltage signal to input, and cannot judge power work state.
Utility model content:
For the problems referred to above, the technical problems to be solved in the utility model is to provide a kind of vehicle-mounted Switching Power Supply working state indicating circuit.
Vehicle-mounted Switching Power Supply working state indicating circuit of the present utility model, it comprises transformer, diode, first resistance-seven resistance, electric capacity, operational amplifier and transistor, the secondary anode of transformer is connected with the positive pole of diode, the secondary negative terminal of transformer is connected and ground connection with the negative pole of electric capacity, the positive pole of electric capacity is connected with the negative pole of diode and one end of the first resistance respectively, the other end of the first resistance is connected with one end of the second resistance and end of oppisite phase 6 pin of operational amplifier respectively, in-phase end 5 pin of operational amplifier is connected with one end of the 3rd resistance and one end of the 4th resistance respectively, the other end of the 3rd resistance is connected with reference voltage terminal, the other end of the 4th resistance respectively with the other end of the second resistance, extreme 4 pin of power-of operational amplifier and earth terminal connect, power positive end 8 pin of operational amplifier connects 12V voltage, output 7 pin of operational amplifier is connected with one end of the 5th resistance, the other end of the 5th resistance is connected with one end of the 6th resistance and the base stage of transistor respectively, the emitter of transistor is connected with the other end of the 6th resistance and 12V voltage respectively, the collector electrode of transistor indicates control end to be connected with one end of the 7th resistance and operating state respectively, the other end ground connection of the 7th resistance.
The beneficial effects of the utility model: the transformer work characteristics that this circuit utilizes Switching Power Supply itself to possess, a status signal sample circuit is increased at power source internal, in order to accurately reflect power source integral operating state, sampled signal leading point is placed into the secondary winding positive output end of main power transformer, control circuit is connected to by a semiconductor diode, control circuit receives the voltage signal that semiconductor diode passes over, provide the signal input part of signal to customer equipment after converting, carry out the operating state instruction of power supply.This circuit, by adding little several devices, achieves required function with very low cost, has very high practical value.
Accompanying drawing illustrates:
For ease of illustrating, the utility model is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment:
As shown in Figure 1, this embodiment is by the following technical solutions: it comprises transformer T, diode D, first resistance R1-the 7th resistance R7, electric capacity C, operational amplifier A and transistor VT, the secondary anode of transformer T is connected with the positive pole of diode D, the secondary negative terminal of transformer T is connected and ground connection with the negative pole of electric capacity C, the positive pole of electric capacity C is connected with the negative pole of diode D and one end of the first resistance R1 respectively, the other end of the first resistance R1 is connected with one end of the second resistance R2 and end of oppisite phase 6 pin of operational amplifier A respectively, in-phase end 5 pin of operational amplifier A is connected with one end of the 3rd resistance R3 and one end of the 4th resistance R4 respectively, the other end of the 3rd resistance R3 is connected with reference voltage terminal, the other end of the 4th resistance R4 respectively with the other end of the second resistance R2, extreme 4 pin of power-of operational amplifier A and earth terminal connect, power positive end 8 pin of operational amplifier A connects 12V voltage, output 7 pin of operational amplifier A is connected with one end of the 5th resistance R5, the other end of the 5th resistance R5 is connected with one end of the 6th resistance R6 and the base stage of transistor VT respectively, the emitter of transistor VT is connected with the other end of the 6th resistance R6 and 12V voltage respectively, the collector electrode of transistor VT indicates control end to be connected with one end of the 7th resistance R7 and operating state respectively, the other end ground connection of the 7th resistance R7.
The utility model is when power supply normally starts, transformer secondary output anode has voltage signal, by converting magnitude of voltage to after diode D on electric capacity C, now be applied to the voltage of end of oppisite phase 6 pin of operational amplifier A higher than in-phase end 5 pin voltage, output 7 pin of operational amplifier A is low level, transistor VT conducting, operating state instruction control end exports 12V voltage signal to the signal input part of customer equipment, shows that power supply is in normal operating conditions.
When power failure or when damaging, transformer secondary output anode will lose voltage signal, by being 0 at the voltage of electric capacity C after diode D, the voltage being now applied to end of oppisite phase 6 pin of operational amplifier A is 0, lower than in-phase end 5 pin voltage, output 7 pin of operational amplifier A is converted to high-impedance state, and transistor VT turns off, operating state instruction control end exports 0V voltage signal to the signal input part of customer equipment, shows that power supply is in abnormal operation.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. vehicle-mounted Switching Power Supply working state indicating circuit, it is characterized in that: it comprises transformer (T), diode (D), first resistance (R1)-seven resistance (R7), electric capacity (C), operational amplifier (A) and transistor (VT), the secondary anode of transformer (T) is connected with the positive pole of diode (D), the secondary negative terminal of transformer (T) is connected and ground connection with the negative pole of electric capacity (C), the positive pole of electric capacity (C) is connected with the negative pole of diode (D) and one end of the first resistance (R1) respectively, the other end of the first resistance (R1) is connected with one end of the second resistance (R2) and end of oppisite phase 6 pin of operational amplifier (A) respectively, in-phase end 5 pin of operational amplifier (A) is connected with one end of the 3rd resistance (R3) and one end of the 4th resistance (R4) respectively, the other end of the 3rd resistance (R3) is connected with reference voltage terminal, the other end of the 4th resistance (R4) respectively with the other end of the second resistance (R2), extreme 4 pin of power-of operational amplifier (A) and earth terminal connect, power positive end 8 pin of operational amplifier (A) connects 12V voltage, output 7 pin of operational amplifier (A) is connected with one end of the 5th resistance (R5), the other end of the 5th resistance (R5) is connected with one end of the 6th resistance (R6) and the base stage of transistor (VT) respectively, the emitter of transistor (VT) is connected with the other end of the 6th resistance (R6) and 12V voltage respectively, the collector electrode of transistor (VT) indicates control end to be connected with one end of the 7th resistance (R7) and operating state respectively, the other end ground connection of the 7th resistance (R7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018557.4U CN205232007U (en) | 2015-12-09 | 2015-12-09 | On -vehicle switching power supply operating condition indicating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018557.4U CN205232007U (en) | 2015-12-09 | 2015-12-09 | On -vehicle switching power supply operating condition indicating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205232007U true CN205232007U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521018557.4U Expired - Fee Related CN205232007U (en) | 2015-12-09 | 2015-12-09 | On -vehicle switching power supply operating condition indicating circuit |
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| CN (1) | CN205232007U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654418A (en) * | 2017-03-02 | 2017-05-10 | 南京交通职业技术学院 | Heavy truck diesel vehicle storage battery equalization performance monitoring device |
| CN106680731A (en) * | 2017-03-02 | 2017-05-17 | 南京交通职业技术学院 | Vehicle storage battery voltage balance monitoring device |
| CN106680737A (en) * | 2017-03-02 | 2017-05-17 | 南京交通职业技术学院 | Positive and negative power supply voltage balance performance indicating device for experimental facility |
| CN106671819A (en) * | 2017-03-02 | 2017-05-17 | 南京交通职业技术学院 | Monitoring device for battery equilibrium performance of vehicle with double battery packs |
| CN110927611A (en) * | 2019-12-09 | 2020-03-27 | 佛山市锐诚云智能照明科技有限公司 | Automatic fault reporting power supply, system and fault detection method |
-
2015
- 2015-12-09 CN CN201521018557.4U patent/CN205232007U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654418A (en) * | 2017-03-02 | 2017-05-10 | 南京交通职业技术学院 | Heavy truck diesel vehicle storage battery equalization performance monitoring device |
| CN106680731A (en) * | 2017-03-02 | 2017-05-17 | 南京交通职业技术学院 | Vehicle storage battery voltage balance monitoring device |
| CN106680737A (en) * | 2017-03-02 | 2017-05-17 | 南京交通职业技术学院 | Positive and negative power supply voltage balance performance indicating device for experimental facility |
| CN106671819A (en) * | 2017-03-02 | 2017-05-17 | 南京交通职业技术学院 | Monitoring device for battery equilibrium performance of vehicle with double battery packs |
| CN106654418B (en) * | 2017-03-02 | 2023-09-01 | 南京交通职业技术学院 | A heavy-duty diesel vehicle battery equalization performance monitoring device |
| CN106680737B (en) * | 2017-03-02 | 2023-10-31 | 南京交通职业技术学院 | Positive and negative power supply voltage balance performance indicating device for experimental equipment |
| CN106680731B (en) * | 2017-03-02 | 2023-11-03 | 南京交通职业技术学院 | A vehicle battery voltage balance monitoring device |
| CN110927611A (en) * | 2019-12-09 | 2020-03-27 | 佛山市锐诚云智能照明科技有限公司 | Automatic fault reporting power supply, system and fault detection method |
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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: 20160511 |