CN204652750U - A kind of mobile phone signal indicating lamp control circuit - Google Patents
A kind of mobile phone signal indicating lamp control circuit Download PDFInfo
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- CN204652750U CN204652750U CN201520361792.5U CN201520361792U CN204652750U CN 204652750 U CN204652750 U CN 204652750U CN 201520361792 U CN201520361792 U CN 201520361792U CN 204652750 U CN204652750 U CN 204652750U
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- resistance
- mobile phone
- control circuit
- signal indicating
- lamp control
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Abstract
A kind of mobile phone signal indicating lamp control circuit, comprise power supply, NPN type triode, first resistance and the second resistance, described power supply is connected with one end of signal lamp, described one end of first resistance is connected with the other end of signal lamp, the other end of described first resistance is connected with the collector electrode of described NPN type triode, the emitter of described NPN type triode is connected with one end of the second resistance, the base stage of described NPN type triode respectively with input/output terminal, the other end of the second resistance is connected, the lamp effect that mobile phone signal indicating lamp control circuit of the present utility model not only achieves mobile phone signal indicator light controls, and, the utility model circuit is simple, cost is low, it is convenient to control.
Description
Technical field
The utility model relates to control circuit field, is specifically related to a kind of mobile phone signal indicating lamp control circuit.
Background technology
Mobile phone is as conventional communication work, life with people is closely bound up, along with the continuous progress of science and technology, cell-phone function also gets more and more, existing mobile phone, the CPU of its platform is not with lamp to imitate regulatory function, does not namely have the pin of special control signal indicator light, makes troubles so just to the use of mobile phone.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides that a kind of circuit is simple, cost is low, control mobile phone signal indicating lamp control circuit easily.
The utility model provides a kind of mobile phone signal indicating lamp control circuit for solving the problem, comprise power supply, NPN type triode, the first resistance and the second resistance, described power supply is connected with one end of signal lamp, described one end of first resistance is connected with the other end of signal lamp, the other end of described first resistance is connected with the collector electrode of described NPN type triode, the emitter of described NPN type triode is connected with one end of the second resistance, and the base stage of described NPN type triode is connected with the other end of input/output terminal, the second resistance respectively.
As optimal technical scheme of the present utility model, one end ground connection of described second resistance.
As optimal technical scheme of the present utility model, the resistance of described first resistance is less than the resistance of the second resistance.
As optimal technical scheme of the present utility model, described second resistance is pull down resistor.
As optimal technical scheme of the present utility model, the resistance of brightness regulation first resistance needed for signal lamp.
As optimal technical scheme of the present utility model, described input/output terminal is low level or high level, and the initial condition of input/output terminal is low level.
As optimal technical scheme of the present utility model, described signal lamp is charging indicator light or mobile phone short message indicator light.
As optimal technical scheme of the present utility model, described signal lamp is LED.
Mobile phone signal indicating lamp control circuit of the present utility model, by comprising power supply, NPN type triode, first resistance and the second resistance, described power supply is connected with one end of signal lamp, described one end of first resistance is connected with the other end of signal lamp, the other end of described first resistance is connected with the collector electrode of described NPN type triode, the emitter of described NPN type triode is connected with one end of the second resistance, the base stage of described NPN type triode respectively with input/output terminal, the other end of the second resistance is connected, the lamp effect making the utility model achieve mobile phone signal indicator light controls, and, the utility model circuit is simple, cost is low, it is convenient to control.
[accompanying drawing explanation]
The circuit structure diagram of the embodiment that Fig. 1 provides for the utility model mobile phone signal indicating lamp control circuit.
[embodiment]
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Core of the present utility model is to improve existing circuit board of mobile phone, namely in the input/output terminal, power supply basis of existing free time, increase NPN type triode, the first resistance and the second resistance component, thus playing the lamp effect object realizing controlling mobile phone signal indicator light, its concrete technical scheme is described in detail by following specific embodiment.
As shown in Figure 1, the mobile phone signal indicating lamp control circuit of the present embodiment comprises power supply VBAT, NPN type triode Q101, first resistance R101 and the second resistance R102, described power supply VBAT is connected with one end of signal lamp, one end of described first resistance R101 is connected with the other end of signal lamp, the other end of described first resistance R101 is connected with the collector electrode of described NPN type triode Q101, the emitter of described NPN type triode Q101 is connected with one end of the second resistance R102, the base stage of described NPN type triode Q101 respectively with input/output terminal I/O, the other end of the second resistance R102 is connected, one end ground connection of described second resistance R102.
Described signal lamp specifically refers to charging indicator light or mobile phone short message indicator light, and control by the lamp effect of above circuit to charging indicator light or mobile phone short message indicator light like this, described signal lamp adopts LED.
In concrete enforcement, described first resistance R101 is used for controlling output current, can according to the resistance of brightness regulation needed for signal lamp first resistance R101, described second resistance R102 is pull down resistor, state during for ensureing that input/output terminal I/O does not work is low level, and the resistance of described first resistance R101 is less than the resistance of the second resistance R102.
The operation principle of the present embodiment:
According to the characteristic of NPN type triode Q101, when ground level is low level (input/output terminal I/O is low level), triode Q101 ends, and LED does not work; When ground level is high level (input/output terminal I/O is high level), NPN type triode Q101 conducting, LED is bright.
Above-mentioned input/output terminal NPN type is low level or high level, and the initial condition of input/output terminal NPN type is low level, to avoid electric light on circuit one will be bright.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (8)
1. a mobile phone signal indicating lamp control circuit, it is characterized in that: comprise power supply, NPN type triode, the first resistance and the second resistance, described power supply is connected with one end of signal lamp, described one end of first resistance is connected with the other end of signal lamp, the other end of described first resistance is connected with the collector electrode of described NPN type triode, the emitter of described NPN type triode is connected with one end of the second resistance, and the base stage of described NPN type triode is connected with the other end of input/output terminal, the second resistance respectively.
2. mobile phone signal indicating lamp control circuit according to claim 1, is characterized in that: one end ground connection of described second resistance.
3. mobile phone signal indicating lamp control circuit according to claim 1, is characterized in that: the resistance of described first resistance is less than the resistance of the second resistance.
4. mobile phone signal indicating lamp control circuit according to claim 3, is characterized in that: described second resistance is pull down resistor.
5. mobile phone signal indicating lamp control circuit according to claim 1, is characterized in that: the resistance of brightness regulation first resistance needed for signal lamp.
6. mobile phone signal indicating lamp control circuit according to claim 1, is characterized in that: described input/output terminal is low level or high level, and the initial condition of input/output terminal is low level.
7. mobile phone signal indicating lamp control circuit according to claim 1, is characterized in that: described signal lamp is charging indicator light or mobile phone short message indicator light.
8. mobile phone signal indicating lamp control circuit according to claim 7, is characterized in that: described signal lamp is LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520361792.5U CN204652750U (en) | 2015-05-29 | 2015-05-29 | A kind of mobile phone signal indicating lamp control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520361792.5U CN204652750U (en) | 2015-05-29 | 2015-05-29 | A kind of mobile phone signal indicating lamp control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204652750U true CN204652750U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520361792.5U Expired - Fee Related CN204652750U (en) | 2015-05-29 | 2015-05-29 | A kind of mobile phone signal indicating lamp control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204652750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112543529A (en) * | 2020-11-24 | 2021-03-23 | 广州朗国电子科技有限公司 | Control circuit of LED lamp |
-
2015
- 2015-05-29 CN CN201520361792.5U patent/CN204652750U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112543529A (en) * | 2020-11-24 | 2021-03-23 | 广州朗国电子科技有限公司 | Control circuit of LED lamp |
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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: 20150916 Termination date: 20180529 |
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| CF01 | Termination of patent right due to non-payment of annual fee |