Circuit for overshoot supression in X-ray generators

Details Circuit for overshoot supression in X-ray generators Circuit for overshoot supression in X-ray generators

1977-12-19

1979-10-23

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

361111, 361 83, H02H 720

Patent

active

041722698

ABSTRACT:
Transient voltage overshoot is known to occur when primary current in a multi-phase X-ray generator high voltage transformer is switched on. Transient overshoot is supressed by connecting an impedance in series with the primary current switch. A second switch short circuits the series impedance after a time delay whose length is controlled as a direct function of the primary voltage and as an inverse function of the primary current.
The secondary switch and time delay circuits may comprise self-powered modules which may be added to the primary circuits of existing X-ray generators without additional sensing or power supply connections.

REFERENCES:
patent: 3211929 (1965-10-01), Prines et al.
patent: 3374421 (1968-03-01), Ringelman
patent: 3505591 (1970-04-01), Scott
patent: 3529210 (1970-09-01), Ito et al.
patent: 3590319 (1971-06-01), Baltensperger
patent: 3935527 (1976-01-01), Michelet et al.
patent: 4036199 (1977-07-01), Chateau
patent: 4062051 (1977-12-01), Way

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