High power factor electronic stabilizer with protection circuit

Details High power factor electronic stabilizer with protection circuit High power factor electronic stabilizer with protection circuit

1995-04-10

1997-05-06

Williams, Howard L.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Voltage regulator protective circuits

361 86, H02H 700

Patent

active

056277083

ABSTRACT:
A high power factor electronic stabilizer with projection circuit application comprising a high frequency filter between the input of a power source and a rectifying circuit, a feed-back power factor improving circuit between the rectifying circuit and an oscillating circuit for adjusting the angle of phase difference of the input current and voltage to the minimum to obtain the best power factor by taking a high frequency voltage from a lamp and feeding back to the output of the rectifying circuit and by switching a high frequency by means of the high frequency filter and the feed-back power factor improving circuit, and a protective circuit connected between the oscillating circuit and the feed-back power improving circuit for protecting the electronic stabilizer to elevate its quality and service life, turning off the transistors in case of the lamp getting out of order.

REFERENCES:
patent: 4994717 (1991-02-01), Moon
patent: 5208515 (1993-05-01), Lee
patent: 5410221 (1995-04-01), Mattas et al.

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