Television receiver standby circuit

Details Television receiver standby circuit Television receiver standby circuit

1982-05-27

1985-07-30

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

315380, 358190, 3581941, H01J 2900

Patent

active

045324573

ABSTRACT:
A deflection generator of a television receiver includes a trace switch that during normal mode of operation is switched at a deflection rate to generate scanning current in a deflection winding. The deflection generator includes a retrace capacitance for forming a retrace resonant circuit with the deflection winding to produce a retrace pulse voltage. A load circuit is coupled to the deflection generator and is energized by the retrace pulse voltage during normal operation. A remote control circuit develops a remote ON-OFF command signal. A standby circuit is series coupled with the deflection generator and is responsive to a remote ON-OFF command signal for producing a substantially short circuited trace switch upon receipt of the OFF-state of the command signal. The retrace pulse voltage collapses and places the load circuit in a standby mode of operation.

REFERENCES:
patent: 3767967 (1973-10-01), Luz
patent: 3801856 (1974-04-01), Griepentrog et al.
patent: 3882401 (1975-05-01), Cleland
patent: 3956669 (1976-05-01), Del Ciello
patent: 4024577 (1977-05-01), Diethelm
patent: 4176304 (1979-11-01), Scott
Article in Funkschau, 1975, No. 5, pp. 40-43, Entitled, A Blocking Oscillator Power Module with Network Isolation, by R. Dangschat et al.

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