Wxdc12003 Schematic Better Jun 2026

Stock: SS34 (3A, 40V). Better: (5A, 40V) or SB540 (5A, 40V, lower Vf). Lowers power loss at 3A from ~1.2W to ~0.7W.

Power supply schematic - Hardware Development - Arduino Forum wxdc12003 schematic better

Feedback is taken after Cout, via a resistor divider (R1/R2) into the IC’s FB pin. Stock: SS34 (3A, 40V)

: Some boards are marked with "310VDC" near the filter capacitor. This is a warning that residual high-voltage DC can remain on the cap after power is disconnected. Manufacturer Variations Stock: SS34 (3A

For engineers and makers: download the (link to your repository). Build it once, and you’ll never go back to the generic board.