Constant current density high voltage power supply

Details Constant current density high voltage power supply Constant current density high voltage power supply

1982-04-07

1984-11-20

Shoop, William M.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

H02M 3335

Patent

active

044842562

ABSTRACT:
A pulsed high voltage variable duty cycle current generator is described. One embodiment comprises a constant current power supply cyclically driving either one or both halves of a transformer primary. The transformer primary is polarized so that there is a secondary current output pulse proportional to the value of primary current only when one half of the primary is driven. The secondary current is rectified, and the average dc secondary current valve is used to control the primary driver duty cycle so that the secondary average current is maintained at a predetermined level. Thus, the output is a series of current pulses where the output peak value is determined by the amount of constant primary current and the output average value is determined by the output duty cycle. A second embodiment is disclosed where the peak output current is controlled by the duty cycle of the primary high frequency current pulses and where the output duty cycle is controlled by turning the primary circuit on and off at a low frequency at an adjustable duty cycle.

REFERENCES:
patent: 3670234 (1972-06-01), Joyce
patent: 3701937 (1972-10-01), Combs
patent: 3742330 (1973-06-01), Hodges et al.
patent: 4005352 (1977-01-01), Kugler et al.
patent: 4025863 (1977-05-01), Higuchi et al.
patent: 4121282 (1978-10-01), Ohsawa
patent: 4150424 (1979-04-01), Nuechterlein
patent: 4244015 (1981-01-01), Beebe
patent: 4272806 (1981-06-01), Metzger
patent: 4330816 (1982-05-01), Imazeki et al.
patent: 4371917 (1983-02-01), Bator

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