The Circuit Diagram of Hepatitis Virus Sterilizer Controller Consists of 555

Published:2011/8/8 21:48:00 Author:Felicity | Keyword: Hepatitis Virus Sterilizer | From:SeekIC

As button AN pressed, the potential transformer B is on and 555 is set because pin 2 is low. And the high voltage output by pin 3 makes contact J1-1 of relay J close and the power voltage is self-hold. Then C1 is charged through W1, R1 and while the voltage reaches 2/3 VDD, 555 reset, and the Contact J1-1 of Relay J releases because the low voltage output by pin 3. And the power is off. And the delay time ,td=1.1(Rw1+R1) C1 ,of 555 is the sterilizing time, which can be adjusted by adjusting W1.



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