| 摘要 |
An on-off pulse time control comprising a pulse generator providing a source of time base pulses to on and off timer circuits each of which includes a set of counters for producing a time signal upon completion of a pre-selected time interval. The output of each counter is connected to an inverter gate which provides a logical true signal to a synchronization gate associated with each timer. The outputs of the synchronization gates are applied to a flip flop circuit which resets one timer and simultaneously sets the other timer to initiate its time interval, thus providing a continuous on-off timed cycle.
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