Power transistor drive circuit

A transistor drive circuit comprising:

• a first power switching transistor having a base, an emitter, and a collector;
• a first driver transistor having a base, an emitter, and a collector, wherein the first driver transistor collector is connected to the first switching transistor collector and the first driver transistor emitter is connected to the first switching transistor base;
• means for providing first turn-on and first turn-off pulses;
• means for coupling said first turn-on pulses to said first driver transistor base;
• a first capacitor;
• means for connecting said first capacitor between said first driver transistor base and said first switching transistor emitter when said first turn-off pulse is present, wherein the voltage on said first capacitor hastens turn-off of said first driver transistor and said first switching transistor;
• means for continuing current flow in said first capacitor following turn-off of said first driver transistor but prior to turn-off of said first switching transistor;
• means for charging said first capacitor following turn-off of said first switching transistor;
• a second power switching transistor having a base, an emitter, and a collector;
• a second driver transistor having a base, an emitter, and a collector, wherein the second driver transistor collector is connected to the second switching transistor collector and the second driver transistor emitter is connected to the second switching transistor base;
• means for providing second turn-on and second turn-off pulses;
• means for coupling said second turn-on pulses to said second driver transistor base;
• a second capacitor;
• means for connecting said second capacitor between said second driver transistor base and said second switching transistor emitter when said second turn-off pulse is present, wherein the voltage on said second capacitor hastens turn-off of said second driver transistor and said second switching transistor;
• means for continuing current flow in said second capacitor following turn-off of said second driver transistor but prior to turn-off of said second switching transistor;
• and
• means for charging said second capacitor following turn-off of said second switching transistor.