High voltage regulator for CRT anode voltage supply

Details High voltage regulator for CRT anode voltage supply High voltage regulator for CRT anode voltage supply

1988-04-15

1989-02-28

Salce, Patrick R.

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

323233, 323285, 323299, 358190, G05F 1613

Patent

active

048089060

ABSTRACT:
A voltage regulator for an anode voltage supply in a CRT powered by a deflection flyback pulse generator includes a voltage sensing network for providing a feedback signal to a summing amplifier. A pulse sensing network which may be a capacitive divider is connected between the output of the flyback pulse generator and the input to the summing amplifier. The resultant output of the summing amplifier is the flyback pulse level shifted with respect to a DC level which is applied to a MOSFET switch to turn it on whenever the flyback pulse goes above the MOSFET's threshold. The output of the MOSFET switches current through a shunt capacitor coupled to the output of the deflection flyback pulse generator for altering its capacitance thereby regulating the height of the flyback pulses, and thus regulating the anode voltage supply.

REFERENCES:
patent: 3323037 (1967-05-01), Doss
patent: 4041355 (1977-08-01), Onodera
patent: 4073003 (1978-02-01), Chambers
patent: 4679131 (1987-07-01), Filliman
patent: 4774584 (1988-09-01), Schmadal

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