John, >List, I am a newcomer to this list, so has the subject of Constant Current CS >>Generators been covered?? Yes, it has. Go to http://escribe.com/health/thesilverlist/index.html and do a search for constant current or go to www.silverdata.20m.com/ to get some good info. Paul
--------------------------------- Do you Yahoo!? HotJobs - Search new jobs daily now