> This is wrong, at least assuming NPN darlington. In fact, the collector of > the first transistor of a fully on darlington will be a few 100mV lower than > its base. > Yes sorry that should have said if it's collector is at a higher voltage than it's emmitter. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist