One of my last "scores": this TOE8815-32 32V 10A (320W) PSU of 2000 vintage. It has arbitrary function (1000 steps), GPIB. The user interface is not intuitive but I managed to get the user manual from Toellner Germany to be able to program it.
A huge (434x132x437 mm) and heavy beast (23 kg).
A look inside explains this: two big transformers, one massive heatsink (under the shield on the top) with fan:
Regulation is based on classical series regulator. It involves two big rows of TIP3055 transistors:
Close-up on the transistors (and flux residue!) :
Not quite easy to put on the bench, but I could not resist (one cannot have too many PSUs)!
Michel.
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