I'd suspect the buzzer...probably a current hog, and did you just put the p= ot in series with it...so all that "energy" is simply converted to heat? = kravnus wolf wrote: Out of curiosity, check the ampere= comsumption when it is idle and when it is used. Maybe some bad connection? John --- William Chops Westfield wrote: > = > On Jan 15, 2006, at 8:23 AM, Shay wrote: > = > > LED's shouldn't drain a 9 volt battery that > quickly and the > > buzzer is almost never on. Really, only 1 or 2 > led's are lit at any > > given time and they're really low volt led's. > = > A typical 9V battery has about 500mAH of energy, so > if you're > driving 20mA into LEDs, you can only expect a life > of about 25 hours. > LEDs are low current compared to incandescents, but > they're not all > that low power on an absolute scale... > = > BillW > = > -- = > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > = __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around = http://mail.yahoo.com = -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist = --------------------------------- Yahoo! Photos =96 Showcase holiday pictures in hardcover Photo Books. You design it and we=92ll bind it! -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist