Transformer coupled drive circuit

Details Transformer coupled drive circuit Transformer coupled drive circuit

1987-06-24

1988-09-27

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307255, 307314, 3072471, H03K 326, H03K 345, H03K 1756

Patent

active

047744197

ABSTRACT:
A transformer includes a secondary winding coupled to a load which may be the source and gate of a FET. The primary winding of the transformer is connected to a pair of switching transistors, a first of which couples the winding across B+ during a positive portion of the drive cycle, and a second of which couples a charged capacitor across the primary during a second, negative portion of the drive cycle. The duty cycle defined by the positive and negative portions of the cycle varies. In order to prevent excess current during saturation of the core for duty cycles other than 50%, the capacitor is sized to supply only enough voltage and current to reset the core.

REFERENCES:
patent: 4176304 (1979-11-01), Scott
patent: 4227123 (1980-10-01), Dietz
patent: 4349752 (1982-09-01), Forte
patent: 4561027 (1985-12-01), Sita et al.
patent: 4629971 (1986-12-01), Kirk
patent: 4656414 (1987-04-01), Morund

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