Small DC to DC converters of the type used to generate supplememtary voltages on circuit boards HOME

Reverse engineered circuit diagram of two different DC to DC converters of the type used on old 10bT LAN cards.

Circuit Diagram aka Schematic reverse engineered from circuit board

They are both fairly identical in operation and specification. In fact they are pin compatible and interchangable.

Circuit Diagram aka Schematic reverse engineered from circuit board

Here is a picture of the original modules next to the magnetic cores they contain, depotted under pressure in a cappucchino machine.

Picture of the modules and the magnetic cores inside

I do not gaurantee the accuracy or safety of any information herein.
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Do not experiment with or build any of the above circuits.