Patent ID: 7830096
Filing Date: 2010-11-09
Classification: H05B

Abstract:
1. A current fed bipolar junction transistor (BJT) based inverter ballast comprising: a first base drive circuit configured to drive a first BJT switch; a second base drive circuit configured to drive a second BJT switch; a first high-speed drive peak current limiting circuit, configured to operate in conjunction with the first base drive circuit; a second high-speed drive peak current limiting circuit, configured to operate in conjunction with the second base drive circuit; wherein the first base drive circuit configured to drive the first BJT switch includes, a first diode-resistor parallel circuit arranged to receive a drive signal and to selectively supply the received drive signal to the first BJT switch; and wherein the first high-speed drive peak current limiting circuit, configured to operate in conjunction with the first base drive circuit includes a first capacitor-resistor series circuit arranged in parallel with the first diode-resistor parallel circuit.