Regular DIYAudio contributor Mark Johnson has kindly released this project into the public domain.
The impetus behind the project was the desire for the designer to safely use a low current, front panel switch of the anti-vandal type in power amplifiers. The board incorporates inrush current limiting, wiring for the on/of switch and an auxiliary 5V supply. Rather than trying to rewrite Mark’s excellent circuit rationale and description, you should read it on the DIYAudio site.
The Gerber files are linked below, and these can be uploaded to any manufacturing site. Further information on downloading Gerber files and sending them to a manufacturer can be found here.
(Note: The default option for copper on the boards is usually 1.6oz but Mark suggests using 2oz. copper unless the Volt-Ampere rating of the transformer is less than 201 VA).
Click here to download the Gerber zip file.
Click here to download the Bill of Materials
Click here for a user-submitted Mouser cart.
(Non US customers should note that the Meanwell power supply will not be shipped outside the US. You can source this from other retailers such as RS Components).