Hi Rich; I'm not sure on this one but I would probably go looking for a fluorescent lamp ballast. Some of them are actual transformers and you may find one to drive 300w. should be cheap too! good luck Wil ---------- From: Rich Graziano To: PICLIST@MITVMA.MIT.EDU Subject: High Voltage Power Transformers Date: Wednesday, January 06, 1999 9:07 AM I am looking for a commercial source for high voltage transformers with a secondary output voltage of 1500 volts and a secondary current of 200mA into a 10k load. The primary voltage could be 120 volts and the operating frequency can be 60Hz or any other specific frequency above that (less than 20KHz). I want an off-the shelf design, not a special. I have not had much luck locating a manufacturer of high voltage transformers having outputs grearer than 220 V. Any help would be appreciated. Richard