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5V USB power supply adapter standby automatic power off control circuit

A power adapter and automatic power-off technology, applied in the direction of battery disconnection circuit, battery circuit device, collector, etc., can solve the problems of speeding up the power adapter, hidden dangers, power consumption, etc., to reduce power consumption, easy to use, and easy to operate. simple effect

Active Publication Date: 2019-03-19
LUAN TONGXIN CHANGNENG ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional power adapter is only used as a charging tool for electronic devices. Generally, people habitually do not unplug the power adapter after charging it with the power adapter. This is a big safety hazard. Generally, there are The circuit consumes power, and power on for a long time will accelerate the overheating of the power adapter and cause a fire hazard

Method used

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  • 5V USB power supply adapter standby automatic power off control circuit
  • 5V USB power supply adapter standby automatic power off control circuit

Examples

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Embodiment

[0016] see Figure 1-2 As shown, the 5V USB power adapter standby automatic power-off control circuit includes the input terminal AC220V and the output terminal DC5V of the power adapter, and the input terminal AC220V and output terminal DC5V are connected to the internal protection circuit of the power adapter through wires.

[0017] The internal protection circuit of the power adapter includes the L terminal and the N terminal of the input terminal AC220V, the positive pole and the negative pole of the output terminal DC5V, the photocoupler IC1, the bidirectional thyristor BT1, the bidirectional thyristor BT2, the start button switch AN1, Resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, 5VUSB switching power supply circuit, current transformer L1, diode D1, diode D2, diode D3, transistor Q1, transistor Q2, capacitor C1, capacitor C2, light-emitting diode LED1;

[0018] The L end of the input terminal AC220V is respectively connected to one end of the start bu...

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PUM

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Abstract

The invention discloses a 5V USB power supply adapter standby automatic power off control circuit which comprises the input end AC 220V and the output end DC 5V of a power supply adapter. The input end AC 220V and the output end DC 5V are connected with the inner protection circuit of the power supply adapter through wires. When a 5V USB switching power supply circuit loses power and does not work, the 5V power supply adapter is disconnected and is connected with a 220V power supply to reduce power consumption. The risk of fire caused by accelerated 5V power supply adapter overheating caused by long-time energizing is avoided. The control circuit is conducive to energy saving and environmental protection. When charging is carried out again, a user simply needs to press an AN1 start buttonswitch to charge all devices, such as a mobile phone. The control circuit has the advantages of easy use, simply operation and superior safety performance.

Description

Technical field: [0001] The invention relates to the field of electronic charging equipment, in particular to a 5V USB power adapter standby automatic power-off control circuit. Background technique: [0002] The power adapter is also called an external power supply. It is a power supply voltage conversion device for small portable electronic devices and electronic appliances. It is commonly used in small electronic products such as mobile phones, liquid crystal displays, and notebook computers. Composed of components such as PCB boards, its working principle is converted from AC input to DC output; according to the connection method, it can be divided into wall-plug type and desktop type. It is widely used in security cameras, set-top boxes, routers, light bars, massagers and other equipment. [0003] The traditional power adapter is only used as a charging tool for electronic devices. Generally, people habitually do not unplug the power adapter after charging it with the ...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/02
CPCH02J7/00H02J7/0032H02J7/02H02J2207/20
Inventor 刘举柱
Owner LUAN TONGXIN CHANGNENG ELECTRONICS TECH CO LTD