Degaussing circuit for wide-range ac

Details Degaussing circuit for wide-range ac Degaussing circuit for wide-range ac

1995-12-21

1997-10-07

Pascal, Robert

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Pulse storing

315 1, 361150, H01F 1300, H04N 929

Patent

active

056752199

ABSTRACT:
An automatic degaussing circuit provides a video display apparatus with a degaussing capability over a wide range of ac mains sources. An ac mains source is coupled to a degaussing coil by a series interconnection of first and second temperature-sensitive resistances. The temperature-sensitive resistances have oppositely-tending temperature coefficients, so that a total dc impedance of the automatic degaussing circuit initially decreases after power is applied to the circuit.

REFERENCES:
patent: 3617800 (1971-11-01), Ishikawa
patent: 3619703 (1971-11-01), Yamashita et al.
patent: 4742270 (1988-05-01), Fernsler et al.
patent: 5241448 (1993-08-01), Stolte

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