Cycling limiting circuitry and method for electrical apparatus

Details Cycling limiting circuitry and method for electrical apparatus Cycling limiting circuitry and method for electrical apparatus

1988-02-11

1989-08-01

Mis, David

Electric lamp and discharge devices: systems

With automatic shunt and/or cutout

315127, H05B 3703

Patent

active

048535990

ABSTRACT:
For use with apparatus of the type including a power supply, means operated by the power from the power supply and means operably connected between the power supply and the means operated thereby for applying power of a predetermined magnitude for operating said operated means circuitry and method wherein a resistor is connected to the apparatus and cycling limiting circuitry is connected across the resistor and is responsive to the voltage drop thereacross when the operated means cycles, i.e. turns off and then on. The cycling limiting circuitry counts the number of cycles and after a predetermined number of cycles occurs provides an output which is effective for interrupting power from the power supply, whereby the operating means is removed from the circuit to protect the latter from damage due to unlimited cycling.

REFERENCES:
patent: 4727297 (1988-02-01), Wolze

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