Switchable very-high-voltage direct-current power supply for cap

Details Switchable very-high-voltage direct-current power supply for cap Switchable very-high-voltage direct-current power supply for cap

1979-09-05

1981-08-18

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

358 73, H01J 2980

Patent

active

042849284

ABSTRACT:
A power supply designed primarily for polychrome cathode-ray tubes of the penetration type and capable of switchover to three and/or four levels comprises a main high-voltage source and one or more auxiliary sources having lower rated voltage values, the auxiliary source or sources being combined with the main source by means of a set of switches according to the total value of voltage to be applied to the polychrome cathode-ray tube in order to obtain a predetermined color. A circuit for recovering the switching energy is associated with the four-level supply system.

REFERENCES:
patent: 3892977 (1975-07-01), Bierly
patent: 3914617 (1975-10-01), Corbel
patent: 4104564 (1978-08-01), Cohen et al.

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