Four Output Switching Power Supply - August 2009 QST
This article describes the theory, circuits and construction of a four output switching power supply. As originally built, it had four positive outputs: two fixed and two variable. I modified it at the request of ARRL and replaced one of the fixed supplies with a negative supply. Any combination of the supplies can be fixed and/or variable up to about +20V for the positive and -20V for the negative regulators.
- The circuit boards can be purchased from FAR Circuits.
- The construction files are on the ARRL web site.
Here are the files you can download for this project:
- Article (PDF)
- Dip Trace source
- Documentation
- Circuit Boards
- Spectrum Analyzer screen shots
- Original text and files of article
- List of all the files
