Horizontal deflection and power supply circuit with a start-up a

Details Horizontal deflection and power supply circuit with a start-up a Horizontal deflection and power supply circuit with a start-up a

1979-05-29

1980-12-16

Hubler, Malcolm F.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

358190, H01J 2970

Patent

active

042400139

ABSTRACT:
A horizontal oscillator provides switching signals for use by a trace switch of a horizontal deflection circuit and to drive a push-pull output stage. The push-pull output stage provides an AC supply voltage to the primary of a power transformer. The rectified secondary winding voltage of the transformer provides a B+ supply voltage to the deflection circuit. After the elapse of a start-up interval, energization voltage for the horizontal oscillator is provided by either the power transformer or the deflection circuit. During the start-up interval the push-pull output stage self-oscillates as an astable multivibrator to develop the AC supply voltage within that interval.

REFERENCES:
patent: 3936115 (1976-02-01), Dietz
patent: 3947632 (1976-03-01), Giger et al.
patent: 4112465 (1978-09-01), Willis
patent: 4127875 (1978-11-01), Fernsler et al.

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