Tobias Kaiser
A Computer Engineer's Projects and Ideas
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January 22, 2018

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.