CN205826841U - A kind of vehicle mounted multimedia BATT testing circuit - Google Patents
A kind of vehicle mounted multimedia BATT testing circuit Download PDFInfo
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- CN205826841U CN205826841U CN201620707683.9U CN201620707683U CN205826841U CN 205826841 U CN205826841 U CN 205826841U CN 201620707683 U CN201620707683 U CN 201620707683U CN 205826841 U CN205826841 U CN 205826841U
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- batt
- det
- test side
- pnp triode
- triode
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Abstract
The utility model discloses a kind of vehicle mounted multimedia BATT testing circuit, enable including power supply BATT, BATT_DET test side, switch triode and BATT_V_DET_EN.This utility model is reasonable in design, easy to use, remarkably productive, and when non-transformer BATT accesses, PNP triode launches extremely low level, and PNP triode audion ends, and BATT_DET test side low level output cannot detect；When power supply BATT accesses and when BATT_V_DET_EN enables as low level, the base voltage of PNP triode is equal to emitter voltage, the in like manner effect of switch triode, and NPN audion ends, and BATT_DET test side low level output cannot detect；But when power supply BATT accesses and when BATT_V_DET_EN enables as high level, launching extremely high level and Ue Ub >=0.7, according to the principle of switch triode, PNP triode turns on, BATT_DET test side can be detected by electric resistance partial pressure high level output, thus reaches the effect of BATT detection.
Description
Technical field
This utility model belongs to power sense circuit technical field, is specifically related to a kind of vehicle mounted multimedia BATT detection electricity
Road.
Background technology
Vehicle is more and more higher for the management design testing requirement of power circuit, common vehicle mounted multimedia BATT detection electricity
Road stability is relatively low, and detection speed is the lowest, affects the use of multimedia function, can not meet the modern life quick
The job requirement of stable detection circuit, a good vehicle mounted multimedia power sense circuit can reduce too many worry, increases
The joy of life, therefore, in order to judge whether power supply BATT accesses in time, stablizes quick testing circuit for one and seems the heaviest
Want.
Utility model content
This utility model provides a kind of vehicle mounted multimedia BATT testing circuit purpose to be to work as power supply for the problems referred to above
When BATT accesses machine, power supply can be quickly detected.
The technical solution of the utility model: a kind of vehicle mounted multimedia BATT testing circuit, it is characterised in that: include power supply
BATT, BATT_DET test side, switch triode and BATT_V_DET_EN enable, and described switch triode includes PNP triode
With NPN audion, the emitter stage of described PNP triode connects power supply BATT, and the base stage of PNP triode is connected by resistance launches
Pole, the colelctor electrode of PNP triode connects BATT_DET test side by resistance, and the colelctor electrode of described NPN audion passes through resistance
Connecting the base stage of PNP triode, the grounded emitter of NPN audion, the base stage of NPN audion passes through resistance and BATT_V_
DET_EN enables connection, and resistance eutral grounding is passed through in described BATT_DET test side.
The beneficial effects of the utility model: this utility model is reasonable in design, easy to use, remarkably productive, work as non-transformer
When BATT accesses, PNP triode launches extremely low level, and PNP triode audion ends, BATT_DET test side low level
Output cannot detect；When power supply BATT accesses and when BATT_V_DET_EN enables as low level, the base stage electricity of PNP triode
Pressure is ended equal to emitter voltage, the in like manner effect of switch triode, NPN audion, BATT_DET test side low level output
Cannot detect；But when power supply BATT accesses and when BATT_V_DET_EN enables as high level, launch extremely high level and Ue-
Ub >=0.7, according to the principle of switch triode, PNP triode turns on, and BATT_DET test side is defeated by electric resistance partial pressure high level
Go out and can detect, thus reach the effect of BATT detection.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of this utility model embodiment one.
In figure, power supply BATT, BATT_DET test side, BATT_V_DET_EN enable, PNP triode Q23, NPN audion
Q4, resistance R8, resistance R36, resistance R26, resistance R157, resistance R22.
Detailed description of the invention
For making this utility model purpose, technical scheme and advantage more clearly show, below in conjunction with accompanying drawing pair
Various embodiment of the present utility model is explained in detail.But, even if there is no these ins and outs and based on following
Plant many variations and the amendment of embodiment, it is also possible to realize the application various claim technical scheme required for protection.
This utility model embodiment one as it is shown in figure 1, a kind of vehicle mounted multimedia BATT testing circuit, including power supply BATT,
BATT_DET test side, switch triode and BATT_V_DET_EN enable, and switch triode includes PNP triode Q23 and NPN
Audion Q4, the emitter stage of PNP triode Q23 connects power supply BATT, and the base stage of PNP triode Q23 is connected by resistance R8 to be sent out
Emitter-base bandgap grading, the colelctor electrode of PNP triode Q23 connects BATT_DET test side by resistance R36, and the colelctor electrode of NPN audion Q4 leads to
Crossing resistance R157 and connect the base stage of PNP triode Q23, the grounded emitter of NPN audion Q4, the base stage of NPN audion Q4 is led to
Crossing resistance R22 with BATT_V_DET_EN enable to be connected, resistance R26 ground connection is passed through in BATT_DET test side.
When circuit does not access power supply BATT, PNP triode Q23 launches extremely low level, due to switch triode Ue-Ub
>=0.7 conducting effect, PNP triode Q23 by, BATT_DET test side low level output cannot detect.
When circuit accesses power supply BATT and when BATT_V_DET_EN enables as low level, NPN audion Q4 ends, PNP
Audion Q23 launches extremely high level and base voltage equal to emitter voltage, thus PNP triode Q23 is by, and then PNP
The current collection of audion Q23 extremely low level, BATT_DET test side low level output cannot detect.
When circuit accesses power supply BATT and when BATT_V_DET_EN enables as high level, NPN audion Q4 closes, PNP
Audion Q23 launches extremely high level and Ue-Ub >=0.7, thus PNP triode Q23 turns on, and then the collection of PNP triode Q23
Electrode is high level and passes through resistance R36 and R26 dividing potential drop, and BATT_DET test side high level output can detect.
To sum up, this utility model reaches intended purpose.
Claims (1)
1. a vehicle mounted multimedia BATT testing circuit, it is characterised in that: include power supply BATT, BATT_DET test side, switch
Audion and BATT_V_DET_EN enable, and described switch triode includes PNP triode and NPN audion, described PNP tri-pole
The emitter stage of pipe connects power supply BATT, and the base stage of PNP triode connects emitter stage by resistance, and the colelctor electrode of PNP triode leads to
Crossing resistance and connect BATT_DET test side, the colelctor electrode of described NPN audion connects the base stage of PNP triode, NPN by resistance
The grounded emitter of audion, the base stage of NPN audion is connected with BATT_V_DET_EN enable by resistance, described BATT_
DET passes through resistance eutral grounding in test side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620707683.9U CN205826841U (en) | 2016-07-07 | 2016-07-07 | A kind of vehicle mounted multimedia BATT testing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620707683.9U CN205826841U (en) | 2016-07-07 | 2016-07-07 | A kind of vehicle mounted multimedia BATT testing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205826841U true CN205826841U (en) | 2016-12-21 |
Family
ID=57564622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620707683.9U Active CN205826841U (en) | 2016-07-07 | 2016-07-07 | A kind of vehicle mounted multimedia BATT testing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205826841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529349A (en) * | 2021-07-30 | 2021-10-22 | 珠海格力电器股份有限公司 | Washing machine, control method and control device of washing machine and washing system |
-
2016
- 2016-07-07 CN CN201620707683.9U patent/CN205826841U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529349A (en) * | 2021-07-30 | 2021-10-22 | 珠海格力电器股份有限公司 | Washing machine, control method and control device of washing machine and washing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200526 Address after: 3 No. 401120 Chongqing Yubei District City Yufeng town Tong Guangxi Avenue Patentee after: Beidou Xingtong Zhilian Technology Co., Ltd Address before: 223800 Suqian city in Jiangsu Province Economic Development Zone Suyu Emei Road No. 1 Patentee before: JIANGSU BDSTAR NAVIGATION AUTOMOTIVE ELECTRONICS Co.,Ltd. |