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Will this work for building a bench supply ?

Externet

Well-Known Member
120VAC---->isolation transformer---->rectifier---->160VDC---->filtering---->pot.controlledIGBT---->output 0-to-100+VDC
 
The IGBT is better as a switch then a regulator.

What kind of loads are you thinking about? I'd go with a very high frequency Switcher design but it depends on what you're after.

Also, if you get a step-down transformer you can clip some waste off of your filtered 160vdc you're planning to use to feed your 0-100v regulator. 60v is a lot of headroom. 120 to 100 transformers are pretty common.
 

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