High efficiency inverter and ballast circuits

Details High efficiency inverter and ballast circuits High efficiency inverter and ballast circuits

1981-12-14

1984-02-07

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

315256, 315DIG5, 363133, H03K 3282, H03K 330

Patent

active

044306288

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 feedback, and the other being non-saturable for providing a subtractive feedback.

REFERENCES:
patent: 3305759 (1967-02-01), Corey
patent: 3914680 (1975-10-01), Hesler et al.
patent: 4002999 (1977-01-01), Hesler et al.

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