This project originally started off earlier last year when I decided to make a single rail power supply. I wanted something I could use to create standalone external power supplies for use with powering headphone amps and DACs to improve the listening experience.
After the release of the Helios Bi-Polar PSUs I decided it was time to revisit the single rail iteration and see how I could improve upon it. The main aim this time was to make it as small and compact as possible whilst still utilising through hole components. I have also retained the 78xx regulator pin configuration as this is quite popular in the audio community. Below is a summary of the changes and improvements I have made:
- Added connector blocks to easily connect input and output without soldering.
- Added onboard fuse as extra level of protection.
- Reduced PCB size to 140mm x 65mm.
- Increased output smoothing cap to 1000uF.
- Made input voltage selection simpler.
- Changed the 4 individual rectifier diodes for a single 4P DIP IC package.
- Moved the External LED connector pads to a more convenient location.
The BOM will be updated in due course as I am currently in the middle of creating a new section on the site which will feature my PCB designs along with BOM list so they are easier to find.
If you would like to obtain one or more of these boards or if you have any comments or questions then please send me an email to firstname.lastname@example.org and I will get back to you as soon as I am able.
Once again thank you to everyone for your support and stay safe!