Adjustable timing hige automatic switch circuit

Published:2011/6/8 6:46:00 Author:Fiona | Keyword: Adjustable timing hige automatic switch | From:SeekIC

Button switch AN11, AN2 is manual on and off. K11 and K22 is a separate automatic delay on and off. When connecting the power, the circuit charges to the C11 through the W11 and R11, when the voltage of the capacitor is above the peak of BG11, BG11 conducts to trigger the SCR conducts, the relay J is energized pick, J12 and J22 moves to control appliances. J11 closes to discharge the charge on the C11, BG11 closes. During the regular open, when SCR guides energy,point P is equivalent to grounding, often close point J12 is off, by the current charges to C21 through W21 and R21, when the voltage of C21 ends is higher than the peak of the BG21, BG21 conducts, the output signal makes SCR off by C5, the relay disconnects after losing the power, circuit resets.



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