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Power Supply
Control Pulse Width Modulation with NE556
cris
Small Power Supply with LM317
cris
LM317 DC power supply
cris
Open Source Fusion USB 3.0 Charge Pro
Suleyman Y. Dundar
40 Vac to 5 volt @ 600mA DC supply
Allen Pauna
Switching voltage regulator (LM2576)
cris
PicoPD - USB PD development board
CentyLab LLC
Car Battery Monitor
cris