Electric lamp and discharge devices: systems – Cathode ray tube circuits – Power supply from deflection circuit source
Patent
1983-06-09
1986-02-25
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Power supply from deflection circuit source
315408, 315399, H01J 2970
Patent
active
045729948
ABSTRACT:
A circuit arrangement for a picture display device for generating a sawtooth line deflection current. The arrangement comprises a power supply transformer having a primary winding and a secondary winding. One end of the primary winding is connected to a terminal of a supply voltage source and the other end to a controllable supply switch whose other side is connected to the other terminal of the source. The secondary winding is connected in series with a line deflection coil, a trace capacitor, and a deflection switch. A retrace capacitor is connected to the line deflection coil. During the retrace period the line deflection coil, the trace and the retrace capacitors are part of a resonant network the elements of which determine the duration of the retrace period. The secondary winding of the power supply transformer, the line deflection coil, the trace capacitor and the deflection switch are part of a loop to which a trace rectifier and an inductance, whose other end is connected to a voltage terminal, are connected, while a primary capacitor is coupled to the primary winding for partly determining the retrace period.
Bergmans Christianus H. J.
Valkestijn Leonardus A. A.
Blum Theodore M.
Briody Thomas A.
Issing Gregory C.
Streeter William J.
U.S. Philips Corporation
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