Switched-mode field-scanning circuit of video-frequency receiver

Details Switched-mode field-scanning circuit of video-frequency receiver Switched-mode field-scanning circuit of video-frequency receiver

1979-07-20

1982-03-30

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

H01J 2970, H01J 2976

Patent

active

043226639

ABSTRACT:
The switched-mode field-scanning circuit makes use of a load constituted by a vertical deflector, a measuring resistor and a connecting capacitor. The load is connected to the output of a circuit which generates a sawtooth signal by means of the line-scanning retrace signal and has a single unidirectional-voltage, bi-directional-current channel.
The switched-mode field-scanning circuit is intended for use in transistorized video-frequency receivers.

REFERENCES:
patent: 3835348 (1974-09-01), Rhee
patent: 3845352 (1974-10-01), Newman et al.
patent: 3939380 (1976-02-01), Peer
patent: 4081721 (1978-03-01), Haferl
patent: 4104567 (1978-08-01), Peer et al.

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