An automatic reset circuit, its working principle is: the switch S2 is switched on the power supply circuit, through resistor VCC R8 open switch Q6, and the collector output low level close to the Q6 Q5, Q5 Q2 is the collector floating, resistance R3 pull off, the diode D3 is in off state, does not affect the work voltage VDD control the disconnect switch circuit; after S2, the voltage value of VCC decreased rapidly to below 0.7V, the switch Q6 is closed, and the collector of Q6 output high level Q5 open collector output, low level of Q5 open Q2, diode D3 is in a conducting state of rapid capacitor discharge on the VDD, the VDD voltage into the cliff reduced to below 0.7V, making timely reset control circuit to take power from the VDD, waiting for the next work on electricity. The automatic reset circuit provides a stable and reliable power circuit for the controller of the electronic equipment, which ensures the stability of the electronic equipment and is convenient for application.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请,说明书已公开。
【技术保护点】
PCT国内申请,权利要求书已公开。
【技术特征摘要】
【国外来华专利技术】PCT国内申请,...
【专利技术属性】
技术研发人员:韩性峰,
申请(专利权)人:深圳瀚飞科技开发有限公司,
类型:发明
国别省市:广东,44
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