High efficiency inverter & ballast circuits

Details High efficiency inverter & ballast circuits High efficiency inverter & ballast circuits

1981-12-14

1984-04-03

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

363 22, 363133, H02M 753, H03K 330

Patent

active

044410875

ABSTRACT:
A high efficiency push-pull inverter circuit employing a pair of relatively high power switching transistors is described. The switching on and off of the transistors is precisely controlled to minimize power losses due to common-mode conduction or due to transient conditions that occur in the process of turning a transistor on or off. Two current feed-back transformers are employed in the transistor base drives; one being saturable for providing a positive feed-back, and the other being non-saturable for providing a intermittently negative feed-back.

REFERENCES:
patent: 3146406 (1964-08-01), Wilting
patent: 3161837 (1964-12-01), Lloyd
patent: 3466570 (1969-09-01), Webb et al.
patent: 3662249 (1972-05-01), Wijsboom
patent: 3914680 (1925-10-01), Hesler et al.
patent: 4002999 (1977-01-01), Hesler et al.

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