Tobias Kaiser
A Computer Engineer's Projects and Ideas

Flyback converter demo

In case you have ever wondered how modern, tiny power supplies achieve galvanic isoluation, this is certainly due to flyback converters, which use a single switch to drive a transformer.

Just for fun I tried to build a simple flyback demo circuit from spare parts and succeeded. It is not pretty but works for demonstration purposes. This is the schematic:


And here is a photograph of the circuit on the perfboard:

Circuit board

The next step is building a more sane isolated switching converter.