Hi All, I currently have a little discreet boost converter circuit running at 80V.(boost converter with a logic switch keep voltage at 80V. It feeds into a transistor push/pull output driver which allows me to switch the output. My current problem is current. Unloaded the system runs at 80V, with a 500Ohm load on the output it drops to around 20V. I want to increase this to around 40V, do I play with the output driver, or increase the boost converter voltage to 100V+??? Or something else??? Any Ideas/comments? Wayne -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist