Television receiver load compensation circuit

Details Television receiver load compensation circuit Television receiver load compensation circuit

1983-12-23

1986-08-05

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

315408, 315371, 358190, 363 75, H01J 2970, H04N 563

Patent

active

046045562

ABSTRACT:
A deflection circuit is coupled to a horizontal deflection winding for generating scanning current in the winding. A retrace pulse voltage is developed across the deflection winding during the retrace interval. A flyback transformer is coupled to the deflection circuit and has retraced pulse voltages developed across windings thereof. A source of supply energy is coupled to a first winding of the flyback transformer and a load circuit, such as a high power audio circuit, is coupled to a second winding of the transformer and draws load current therefrom. A switched mode power supply is coupled to the source of supply energy and to the flyback transformer for controlling the transfer of energy between the source and the load circuit. A compensation circuit responsive to the operation of the switched mode power supply produces variations in current in an inductance coupled to the flyback transformer. These variations are indicative of variations in load current drawn by the load circuit. The flyback transformer couples the inductance to the retrace resonant circuit for a variable amount of time during retrace to control the transformer trace-retrace duty cycle in a manner that compensates for retrace time modulation due to loading variations.

REFERENCES:
patent: 4298829 (1981-11-01), Luz

Affiliated with

Also associated with

Rating

Television receiver load compensation circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Television receiver load compensation circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television receiver load compensation circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-970668