ON/OFF delay circuit

Details ON/OFF delay circuit ON/OFF delay circuit

1983-06-30

1985-12-24

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307247R, 307246, 361196, H03K 513, H01M 4718

Patent

active

045608911

ABSTRACT:
A delay circuit 2 utilizes two comparator timers 4 and 6 and a minimum of logic to achieve a combination ON/OFF delayed function. The comparator timers 4 and 6 are resettable independently of each other such that each respective ON or OFF delay function may begin retiming without waiting for the other delay function to time out if the input signal transitions back and forth before the end of the respective ON or OFF delay. The delayed circuit 2 is ideal for proximity switch applications, particularly photoelectric type proximity switches, for providing a delayed output signal following a given sensed condition.

REFERENCES:
patent: 3755695 (1973-08-01), Krick et al.
patent: 3794857 (1974-02-01), Milovancevic
patent: 3950657 (1976-04-01), Sheng et al.
patent: 4047058 (1977-09-01), Green

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