Matt grabbed some higher power transformers and started building. The keyboard has 25 keys, each connected to an individual high voltage circuit with its own spark gap.

The flyback transformers tend to hold a charge, similar to that of a leyden jar. Its always a good idea and safety precaution to discharge them, even though its unlikely to be a lethal shock.

The low cost, simplicity of design and intrinsic efficiency of flyback transformers have made them a popular solution for power supply designs of below 100W to 150W. Other advantages of the flyback ...

With the LT6813, designers can build an optoisolator-free power controller that delivers from 20- to 600-V dc output up to 100 W using an updated version of the long-established “flyback ...