Horizontal deflection generator and driver circuit

Details Horizontal deflection generator and driver circuit Horizontal deflection generator and driver circuit

1979-11-30

1981-11-03

Hubler, Malcolm F.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

315408, H01J 2970

Patent

active

042988306

ABSTRACT:
A horizontal deflection generator includes the series arrangement of a horizontal deflection winding and a trace capacitor, a retrace capacitor, and a horizontal trace switch. The trace switch comprises a damper diode and a horizontal output transistor. Base drive for the horizonal output transistor is provided by a horizontal driver stage through a driver transformer. A secondary winding of a flyback transformer is coupled to a high impedance cascade rectifier arrangement to form a DC supply which provides collector supply voltage for the driver stage. The DC supply has a relatively large source impedance to changes in the load current being drawn from the supply by the driver stage. Such a large impedance is desirable in order to limit the base driver to the horizontal output transistor during picture tube arc-over and to allow for duty cycle tolerances in the horizontal oscillator output.

REFERENCES:
patent: 3555343 (1971-01-01), Allen
patent: 3582721 (1971-06-01), van Hoorn et al.
patent: 4112465 (1978-09-01), Willis
patent: 4147964 (1979-04-01), Luz et al.
patent: 4169241 (1979-09-01), Peer et al.
patent: 4178536 (1979-12-01), Manners
patent: 4209731 (1980-06-01), Miko et al.

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