Vertical deflection output circuit

Details Vertical deflection output circuit Vertical deflection output circuit

H - Electricity

04

N

350/106

H04N 3/16 (2006.01) H03K 4/69 (2006.01)

Patent

CA 1088666

VERTICAL DEFLECTION OUTPUT CIRCUIT ABSTRACT OF THE DISCLOSURE A pair of output transistors forming a single- ended push-pull circuit are alternately turned on and off at a vertical cycle to supply a vertical deflection current to a vertical deflection yoke. A low voltage winding is wound on a horizontal flyback transformer connected to a horizontal output transistor. First and second rectifying circuits are provided for rectifying and filtering a horizontal scan period portion and a horizontal flyback portion, respectively, of the voltage developed across the winding, and d.c. outputs of the rectifying circuits are fed to the push-pull circuit as operating power therefor. The first rectifying circuit includes a capacitor-input filter circuit while the second rectifying circuit includes a choke-input filter circuit, a critical current of which choke-input filter is established between a maximum current and a minimum current required for the push-pull circuit.

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