This is a very interesting read: Transformerless Power Supplies: Resistive and Capacitive. I was referred to it by @mariush over on the EEVblog forum.
Transformerless Power Supplies
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Tag Archives: power supply
DC-580 buck-boost power supply with CH340N IC
XH-M229 with RD6006W
Got myself an XH-M229 board so I could repurpose an old ATX power supply. Apparently it’s suitable to use 1 amp fuses. Gonna send the 12V rail into my RD6006W bench power supply.
Teardown of a PC power supply
This via Lobsters today: Teardown of a PC power supply. Also Macbook charger teardown and Apple iPhone charger teardown.