High voltage power supply and regulator circuit for an X-ray tub

Details High voltage power supply and regulator circuit for an X-ray tub High voltage power supply and regulator circuit for an X-ray tub

1992-08-18

1993-08-31

Beha, Jr., William H.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323271, 361103, 361113, 378111, 378117, G05F 1569

Patent

active

052412601

ABSTRACT:
A high-voltage power supply and regulator circuit for an X-ray tube which utilizes solid-state switching devices with feedback control for real time monitoring and protection against failure due to excess current or voltage spikes. The apparatus includes a DC supply circuit utilizing a first feedback control loop and silicon controlled rectifiers to regulate the output of a high-voltage transformer. The apparatus further includes a regulator circuit utilizing a second feedback control loop and a series of FETs to product a continuous or pulsed output of precise magnitude and phase. Shielded voltage dividers are provided to accurately measure the voltage outputs and produce feedback control signals. Discharge modules on the high-voltage cables connecting the power supply to the X-ray tube discharge any capacitive voltage remaining on the cables between pulses, so as to eliminate any tail on the output waveform.

REFERENCES:
patent: 3551788 (1970-12-01), Summer
patent: 4034283 (1977-07-01), Pellegrino
patent: 4274003 (1981-06-01), Kuehnel et al.
patent: 4400660 (1983-08-01), Schaefer
patent: 4739466 (1988-04-01), Glennon et al.
patent: 4870534 (1989-09-01), Harford

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