Current drive arrangement for symmetrical switching circuits
Abstract
Abstract A CURRENT DRIVE ARRANGEMENT IN A SYMMETRICAL SWITCHING CIRCUIT. ALTERNATELY CONDUCTING SWITCHING TRANSISTORS RESPECTIVELY CONNECT THE POSITIVE AND NEGATIVE TERMINAL OF A DC SOURCE TO A LOAD. A SINGLE MAGNETIC DEVICE, A CURRENT TRANSFORMER HAVING A PLURALITY OF WINDINGS, IS PROVIDED. DRIVE CURRENT IS COUPLE FROM A FIRST WINDING TO THE BASES OF THE TRANSISTORS TO TURN ONE TRANSISTOR ON AND BIAS THE OTHER TRANSISTOR OFF. ANOTHER WINDING OF THE TRANSFORMER IS CONNECTED TO COUPLE LOAD CURRENT TO THE TRANSISTOR BASES TO PROVIDE REGENERATIVE DRIVE. WHEN THE DRIVE SIGNAL REVERSES IN POLARITY, THE MAGNETIC DEVICE COUPLES THE DRIVE CURRENT AND THE LOAD CURRENT TO THE TRANSISTORS TO PROVIDE PROPER COMMUTATION.
Inventors
- 👤 Armistead L Wellford
- 👤 John H Cutler
Bibliographic Details
Claims Analysis
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