> What are the max collector current, max collector-emitter > voltage, and gain specs of your transistors? The NTE261 data sheet says: Collector Current = 5A continuous and 8A peak Collector Emitter Voltage = 100V Small-Signal Current Gain Ic = 3A, Ie = 4V, f=1MHz (not sure if this is what you mean by gain specs) -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist