> It is the voltage drop accross the junction that causes > the heat to be generated (P=IV) Got it now. VA (in) = VA (out) + thermal energy So, the answer to the original question is - A diode in series with a battery consumes no current of its own -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu