▲ UD2.7 封皮
▲ Universal DRSSTC Tesla Coil Driver 2.7 Rev C
Here is my take on Steve Ward’s Universal DRSSTC Driver 2 which I have named UD2.7. The UD2 is THE benchmark DRSSTC driver: it has stood the test of time and been used in thousands of high performance coils around the world. I came across Steve’s original UD2 a while back ago, but there were several new features I wanted to incorporate. In addition, I thought it would also be a good idea to share a little bit about how the UD2 works and how to get one working, with the Tesla Coil community. Hopefully this will be a useful resource to hobbyists around the world. The UD2.7 (now in revision C) has since been used successfully in a variety of coils, ranging from small table top 400kHz DRSSTCs, 35kHz large DRSSTCs with a full bridge of CM600 IGBTs and even QCW operation (see application notes below).
This project will not be possible without the work of the following people. Many thanks to Steve Ward for his generosity in sharing the UD2 with the Tesla Coil community, and for his permission for the modification and publication of this new version of the Universal Driver. The UD2.7 is free for download for personal hobby use; credit and all rights of the UD2 design goes to Steve Ward. Also, credit goes to the many improvements made by Bart and Eric in the earlier V2.1 and V2.5 revision, which added lots of cool features.
At the moment I’m quite happy with the UD2.7C revision, and any new features will probably be incorporated in a completely new driver design I will be working on in the future