Plasma Speaker

Another old project that I'm just getting around to writing about now. This is a simple plasma speaker, built around a flyback transformer with the core shims removed driven by an arrangement of a TL5001 PWM chip feeding a FAN73832 high and low side N-type MOSFET driver.

It plays pretty well, though the bass tends to distort. A low pass filter on the audio input would not be amiss. The FETs run warm, but not too hot to touch.