Regulated high-voltage power supply

Details Regulated high-voltage power supply Regulated high-voltage power supply

1987-03-24

1988-07-05

Salce, Patrick R.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363 23, H02H 7122, H02M 3337

Patent

active

047559233

ABSTRACT:
An inventive regulated high-voltage power supply circuit comprises a push-pull oscillation circuit (30) including two transistors (TR4, TR5), a control circuit (20) for controlling voltage to be supplied to the oscillation circuit, a short detecting circuit (50) for detecting shorting in the secondary side of a high-voltage transformer thereby to attenuate output voltage from the control circuit and a time-constant circuit (60) for maintaining an attenuated state of the output voltage of the control circuit caused by the short detecting circuit after releasing of the shorting for a prescribed period of time. Since the osccillation circuit is of the push-pull type, the same can oscillate over the entire periods of positive and negative halfwaves of the AC waveform, thereby to increase outputted power. When shorting of the secondary side is detected, the output voltage of the control circuit is attenuated, and the attenuated state of the output voltage of the control circuit is maintained by the time-constant circuit even if the shorting detection is released, thereby to reduce the overcurrent per unit time.

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