Power supply discharge circuit for TV receiver

Details Power supply discharge circuit for TV receiver Power supply discharge circuit for TV receiver

1978-01-03

1979-04-24

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

315408, H04N 318, H04N 544, H01J 2970

Patent

active

041515587

ABSTRACT:
An improvement in a television receiver circuit for producing rapid discharge of the capacitors of the primary d.c. power supply upon turn-off of the receiver. The disclosed improvement eliminates the need for conventionally used bleeder resistors by the addition of a direct coupling means to existing horizontal sweep circuitry to derive a current which switches the horizontal driver transistor to continuous conduction upon turn-off of the receiver, thereby rapidly discharging the capacitors of the main power supply.

REFERENCES:
patent: 3737572 (1973-06-01), Frizane et al.

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