Switching-type vertical deflection output circuit

Details Switching-type vertical deflection output circuit Switching-type vertical deflection output circuit

2006-06-13

2006-06-13

Vu, David (Department: 2828)

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

C315S368180, C315S368190, C348S806000

Reexamination Certificate

active

07061192

ABSTRACT:
A switching-type vertical deflection output circuit comprises: an output-stage circuit constituted of first and second diodes and first and second switching elements, a smoothing circuit, a vertical deflection coil, a reference vertical sawtooth voltage generation unit, a voltage conversion unit of a vertical deflection current, an error voltage generation unit which obtains an error voltage between the reference vertical sawtooth voltage and the conversion voltage of the voltage conversion unit, a drive unit, and a pump-up circuit which pumps up a power-supply voltage to be supplied to the output-stage circuit during the flyback period. The vertical deflection waveform is stabilized by applying a pump-up pulse of the pump-up circuit to the feedback input terminal through an impedance circuit.

REFERENCES:
patent: 4322663 (1982-03-01), Rilly
patent: 5929574 (1999-07-01), Kim et al.
patent: 9-181932 (1997-07-01), None
STMicroelectronics, Class D Vertical Booster, STV9380-Circuit Description, Dec. 2000; pp. 1-13.
STMicroelectronics, STV9380/S, Class-D Vertical Deflection Amplifier For TV And Monitor Application (Version 3.0); Mar. 2002; pp. 1-8.

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