Comparator controlled delay-on-break devices

Details Comparator controlled delay-on-break devices Comparator controlled delay-on-break devices

1993-10-12

1995-10-03

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

Switch actuation

62158, 361 22, 361 28, H02H 700

Patent

active

054554691

ABSTRACT:
A delay-on-break circuit adaptable for A.C. or D.C. applications utilizes a timer and a pair of comparators to prevent a load from being re-energized until at least a predetermined period of time has elapsed since the most recent deenergization of the load. A feedback element, such as a zener diode, connected between the output of one of the comparators and a feedback input thereof provides reliable latching of the load through zero crossings of the line in A.C. applications without use of a latching capacitor while simultaneously providing brownout protection capable of rapidly deenergizing the load in the event of an undesired decrease in line voltage.

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Circuit Schematic of Watsco Components Corp. Prior Art EAC-511 Series Timer.
SSAC Precision Products TA Series Timer Schematic of Aug. 23, 1977.
SSAC Precision Products TA Series Timer Schematic of Aug. 20. 1976.
158, LM258, LM358, LM2904 Representative Circuit Schematic.
SSAC Precision Products TA Timer Schematic dated Jan. 23, 1981.

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