Circuitry for limiting an operating voltage obtained by way of a

Details Circuitry for limiting an operating voltage obtained by way of a Circuitry for limiting an operating voltage obtained by way of a

1988-03-04

1989-03-21

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Power supply from deflection circuit source

358190, 358243, 363 21, H01J 2970

Patent

active

048146722

ABSTRACT:
Circuitry for limiting a rectified operating voltage.
To recover energy from unutilized power from the secondary winding of a switching-network transformer, it is recirculated to the primary winding through a diode. When appliances fail, the excess energy component can increase to the extent that components are destroyed because the operating voltage increases.
To prevent this situation the excess energy is recirculated into a higher operating voltage U.sub.S through a diode and through another secondary winding of the transformer. The number of turns in the second secondary winding and its polarity ensure that the flyback voltage U.sub.R will be higher than the difference between U.sub.S and U.sub.B.
Switching-network components in conjunction with rectifier modulators in television receivers.

REFERENCES:
patent: 3936719 (1976-02-01), Miyoshi et al.
patent: 4144480 (1979-03-01), Nagasaki et al.

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