Published:2011/8/8 11:24:00 Author:Felicity | Keyword: Timing Circuit | From:SeekIC
In this figure S1 can start timing and when the timer starts, turning this switch has no effect.S2 is the “OFF” switch in the middle and turning this switch can make the timer complete the procedure: charging-open circuit-discharging. Because of charging stopped halfway, the charging position would return to the work state of the timer’s output circuit. And when C discharges, the voltage of R/C is zero and the charging position awaits the start signal of S1.
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