Low ripple, regulated x-ray tube power supply

Details Low ripple, regulated x-ray tube power supply Low ripple, regulated x-ray tube power supply

H - Electricity

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H05G 1/10 (2006.01) H05G 1/20 (2006.01) H05G 1/30 (2006.01) H05G 1/32 (2006.01) H05G 1/34 (2006.01)

Patent

CA 1164103

PW-3 ABSTRACT OF THE INVENTION A low ripple high voltage power supply is disclosed for use in a dental X-ray system, utilizing a rectifier and regulator circuit to provide a low voltage regulated DC signal, a DC-AC converter for providing a high frequency chopped power signal suitable for efficient transformation to a high voltage, followed by a multiplier for generating the final high voltage signal to be applied to the X-ray tube. A high frequency clock circuit is used for driving the converter and also for controlling logic circuitry used to develop the regulator control signals. Both a voltage and a current control loop are utilized in the regulator control, and the tube anode current and filament current are controlled as a function of sensed anode current.

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