Circuit arrangement for an X-ray generator

Details Circuit arrangement for an X-ray generator Circuit arrangement for an X-ray generator

1978-02-02

1980-06-17

Church, Craig E.

Radiant energy

With charged particle beam deflection or focussing

With target means

250413, 250421, H05G 110

Patent

active

042085845

ABSTRACT:
A circuit to avoid excess voltages when the high voltage transformer of an X-ray generator is switched on. The circuit includes a second thyristor connected in series with a damping resistor and coupled in parallel with the starting thyristor for the X-ray tube. Said second thyristor is turned on simultaneously with the high-voltage starting signal, while the first (starting) thyristor (without a series-connected resistor) is turned on with a certain delay. This delay increases as the tube current decreases. Thus, excessive voltages during switching on can be eliminated independently of the value of the tube current with the addition of only a single damping resistor and a thyristor.

REFERENCES:
patent: 2420845 (1947-05-01), Slack
patent: 3130312 (1964-04-01), Craig
patent: 4099056 (1978-07-01), Franke

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