Self-regulating deflection circuit with resistive diode biasing

Details Self-regulating deflection circuit with resistive diode biasing Self-regulating deflection circuit with resistive diode biasing

H - Electricity

04

N

350/101, 355/24

H04N 5/14 (2006.01) H03K 4/62 (2006.01) H04N 3/185 (2006.01)

Patent

CA 1114060

RCA 72,721A SELF-REGULATING DEFLECTION CIRCUIT WITH RESISTIVE DIODE BIASING Abstract of the Disclosure A self-regulating deflection circuit includes a first inductor and switching transistor coupled across the unregulated voltage supply. A damper diode, retrace capacitor and second inductor are coupled in parallel, and the parallel combination is coupled across the transistor by a first rectifier poled to prevent current from flowing from the first inductor to the second inductor A second rectifier is coupled between the first and second inductors for transferring energy from the first inductor to the second during the retrace interval. A control circuit coupled to the second inductor and to the base of the switching transistor controls the time during the first half of the trace interval during which the transistor conducts to allow energy to be stored in the first inductor. A storage capacitor is coupled in series with the second rectifier. Charge accumulation on the storage capacitor and resultant blocking of the second rectifier is prevented by a resistor coupled across the storage capacitor.

324945

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