Linear PSU 12V RevB
author: OnyxRobots
2 layer board of 3.15 x 2.30 inches (80.0 x 58.4 mm)
Uploaded:
February 22, 2014
Shared:
August 23, 2014
Total Price:
$36.25
120V / 12V 1.4A PSU 2014-02-21
For a project where off-the-shelf switching power supplies all had too much coil whine, I designed this linear power supply. It is noise-less, and runs silently. It is designed to be plugged into mains, with proper creepage/clearance zones, but you have to use a separate fuse in the power entry module for the grounded box you should mount this in.
Output voltage is set by the R2/R1 divider; the transformer and application I use set this at 12.0V.
If you’re not comfortable designing for and working with mains voltage electronics, I recommend against trying this project.
120V / 12V 1.4A PSU 2014-02-21
For a project where off-the-shelf switching power supplies all had too much coil whine, I designed this linear power supply. It is noise-less, and runs silently. It is designed to be plugged into mains, with proper creepage/clearance zones, but you have to use a separate fuse in the power entry module for the grounded box you should mount this in.
Output voltage is set by the R2/R1 divider; the transformer and application I use set this at 12.0V.
If you’re not comfortable designing for and working with mains voltage electronics, I recommend against trying this project.
