555 hepatitis germs disinfector control circuit

Published:2011/5/23 20:15:00 Author:TaoXi | Keyword: hepatitis, germs, disinfector, control circuit | From:SeekIC

As the figure 16-10 shows, this disinfector control circuit is composed of the step-down rectifier circuit (VDD=+6V), the 555 boot timing circuit and the control circuit. It can be used to control the timing time of the sodium hypochlorite production. The boot trigger timing circuit is composed of the 555, RP1，R1，C1 and the double-deck button AN. When you are using it, press AN, the transformer T1 gets the power, and 555 sets, J and J1-1 close, the power supply voltage self-locking closes. And then, C1 is charged through RP1 and R1, when C1 is charged to 2/3VDD, 555 resets, J releases, J1-1 cuts off, there is no power supply. The 555 trigger's delay time td=1.1(RP1+R1)C1, you can change the length of the sterilization time by adjusting RP1.



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