CN215499661U - Control circuit of charger pilot lamp - Google Patents
Control circuit of charger pilot lamp Download PDFInfo
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- CN215499661U CN215499661U CN202121576459.8U CN202121576459U CN215499661U CN 215499661 U CN215499661 U CN 215499661U CN 202121576459 U CN202121576459 U CN 202121576459U CN 215499661 U CN215499661 U CN 215499661U
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- indicator light
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- charger
- control circuit
- transistor
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Abstract
The utility model provides a control circuit of a charger indicator light, which comprises a first resistor, a first indicator light, a first transistor and a first chip, wherein the first resistor is connected with the first indicator light and the first transistor in series; when the load is switched on, the first indicator light flashes at intervals of 1 second, the indicator light is turned off after 30 seconds, and the first chip U1 adopts any one of a 94B336 chip or an IP2723/2726 chip. By adopting the charger indicator lamp control circuit, the requirements of users can be better met, the charging state can be prompted in a humanized manner, and the user experience degree is improved.
Description
Technical Field
The utility model relates to the technical field of chargers, in particular to a control circuit of a charger indicator lamp.
Background
Although the charger of the present portable electronic device is provided with an indicator light, the indicator light is in a normally-on state or is prompted by turning red to green, and the charger is not humanized. Chinese patent application No. 2019224505805 discloses an indicator lamp control circuit of charger, and this utility model's technical scheme utilizes the different voltage drop that switches on of emitting diode colour different, makes the improvement to circuit indicator lamp circuit, under the condition that satisfies the colour conversion requirement, can practice thrift the use of components and parts effectively to reduction in production cost effectively.
Therefore, it is necessary to develop a novel control circuit for the indicating lamp of the charger, so as to better meet the requirements of users, remind the charging state in a humanized manner, and improve the user experience.
Disclosure of Invention
The utility model provides a control circuit of a charger indicator light, which comprises a first resistor, a first indicator light, a first transistor and a first chip, wherein the first resistor is connected with the first indicator light and the first transistor in series; the first indicator light blinks at 1 second intervals when the load is turned on, and the indicator light is turned off after 30 seconds.
Further, the first chip U1 adopts any one of a 94B336 chip or an IP2723/2726 chip.
By adopting the charger indicator lamp control circuit, the requirements of users can be better met, the charging state can be prompted in a humanized manner, and the user experience degree is improved.
Drawings
FIG. 1: the utility model discloses a charger indicator lamp control circuit schematic diagram.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The working principle of the circuit of the utility model is as follows: when the charger is connected with an external alternating current power supply and the output end of the charger is not connected with the mobile phone, the first indicator light LED1 is in an off state; the first indicator LED1 blinks at 1 second intervals when the load is on, and LED1 goes off after 30 seconds.
The specific working process is as follows: the charger is connected with an AC power supply, a P3 interface of a first chip U1 is initialized, the P3 interface is a GPIO interface, the P3 interface outputs low level, the transistor Q1 is cut off, and the LED1 is in an off state; when the mobile phone is turned on, the MCU detects that the device is plugged in, and enables a timer (not shown in the figure), so that the level state of the P3 interface is inverted every 1 second, and the transistor is turned on and off at 1 second intervals, so that the first indicator light LED1 flickers at 1 second intervals, after timing for 30 seconds, the P3 interface outputs a low level, the transistor is turned off, so that the first indicator light LED1 is turned off, and the first resistor R1 limits the current of the first indicator light LED 1.
Further, the first chip U1 employs any one of a 94B336 chip and an IP2723/2726 chip.
Furthermore, other interfaces of the first chip U1 are used as various functional ports of the external circuit, for example, the P6 interface is used as a VDD interface, which is not an innovative point of the present invention, and the detailed description is omitted here.
Particularly, the interval time in this embodiment may be adjusted as needed, for example, adjusted to flash at any time within 1 to 3 seconds, which is not limited in the present invention.
The charger indicator lamp control circuit can better meet the requirements of users, prompts the charging state in a humanized manner, and improves the user experience.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (2)
1. The control circuit of the charger indicator light is characterized by comprising a first resistor, a first indicator light, a first transistor and a first chip, wherein the first resistor is connected with the first indicator light and the first transistor in series; the first indicator light blinks at 1 second intervals when the load is turned on, and the indicator light is turned off after 30 seconds.
2. The control circuit of the charger indicator lamp as claimed in claim 1, wherein the first chip is any one of a 94B336 chip or an IP2723/2726 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121576459.8U CN215499661U (en) | 2021-07-12 | 2021-07-12 | Control circuit of charger pilot lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121576459.8U CN215499661U (en) | 2021-07-12 | 2021-07-12 | Control circuit of charger pilot lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215499661U true CN215499661U (en) | 2022-01-11 |
Family
ID=79725931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121576459.8U Active CN215499661U (en) | 2021-07-12 | 2021-07-12 | Control circuit of charger pilot lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215499661U (en) |
-
2021
- 2021-07-12 CN CN202121576459.8U patent/CN215499661U/en active Active
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