Reply to "AC-DC LM317 DIY Voltage Regulator, Top Adjust Module Build Files"

BOB WALKEROGR Forum Member SUPPORTING MEMBER

All this talk about switching power supplies brings back distant memories. My lab designed the very first switching power supply way back in the 50's. I cannot remember what it was used for but it had something to do with vacuum tubes.

12/5/198:17 PM

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