DIY PS503A Construction

 

Above is a picture of the first version that is fully functional.

This blog will cover the DIY construction of a standalone version of the Tektronix PS503A Dual Tracking Power Supply.

The explanation, prototyping and design details are in another Blog that can be found here:

https://www.paulvdiyblogs.net/2025/12/diy-ps503a-rebuild-prototype.html

This is a picture of the original instrument that occupied a slot in a TM5XX mainframe:

The details of this instrument can be found here : https://w140.com/tekwiki/wiki/PS503A

The first version of the PCB that resulted in a working system, needed some changes and was the basis for the Version 2 that is now in production at my sponsor PCBWAY.

Here is a 3D view of the V2 PCB.

Github project repository

There will be a dedicated Github project when I have finished the design, that will have all the information you need to build one yourself and I will also enter the project in the Shared Project section of my sponsor PCBWay.

If you like what you see, please support me by buying me some Java: https://www.buymeacoffee.com/M9ouLVXBdw

For those that already did, thank you!