The fly-killing device circuit

Published:2011/6/10 3:39:00 Author:Seven | Keyword: fly-killing device | From:SeekIC

Working principlesThe circuit of the device is shown in Figure. The whole device is directly powered by the mains voltage of 220V which has been rectified. R3,R4,R5,C1 and the dual-base electrode consist a relaxation oscillator. Uncontrollable silicon is in the off state, after being rectified by VD and then runs across the equivalent resistors of R6 and L1, the mains charges C3. When VS is triggered and conducting, the electric charge on C3 discharge immediately by the conducting silicon and the equivalent resistor of L1. When the charging current becomes 0, the controllable silicon blocks automatically.



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