Flourescent lamp circuit employing a reset transistor coupled to

Details Flourescent lamp circuit employing a reset transistor coupled to Flourescent lamp circuit employing a reset transistor coupled to

1995-03-28

1996-11-12

Pascal, Robert

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Periodic switch cut-out

315247, 315307, H05B 3702

Patent

active

055743366

ABSTRACT:
A circuit for powering a fluorescent lamp has a direct current power supply (10). An inverter (12) is coupled to the direct current power supply (10) and provides a lamp current to the fluorescent lamp load (14). The inverter(12) is connected to an inverter control circuit (18). A protection circuit (16) for detecting lamp current is coupled to the inverter control circuit (18) such that the inverter control circuit (18) turns off the inverter (12) whenever the protection circuit detects the absence of lamp current.

REFERENCES:
patent: 4277728 (1981-07-01), Stevens
patent: 4461980 (1984-07-01), Nilssen
patent: 4667131 (1987-05-01), Nilssen
patent: 5047695 (1991-09-01), Allen et al.
patent: 5068574 (1991-11-01), Koda et al.
patent: 5089752 (1992-02-01), Pacholok
patent: 5436529 (1995-07-01), Bobel

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