Hi All, I need to apply a signal on a load regularly. The load is a coil with an impedence of 60 ohms. The requirement of the signal is 60 Hz, sinewave, around 12 v p-p (as measured across the load during operation). Is there any simple amplifier circuit with one or two transistors that can do the job? I can feed a small amplitude adjustable 60Hz input to the circuit using a singnal generator. Thanks in advance! John -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist