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220V to 12V transformer power supply

Overview

This is actually the second version. The previous 12V switch used the same one as the 220V one, but I realized I was using the wrong one when the switch light didn't turn on. I added lights before and after the 12V switch to check for residual power. I also added a circuit that can quickly use up any remaining power after a power outage. I don't have a clear idea yet. The output is actually 18V; I'll add a voltage regulator chip later. Discussion and guidance are welcome. (Only group: 289917684)

Design Files

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Update:2026-03-26 18:07:46

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