Hi everybody,
                    I have a circuit using a 16f874 , with a total power
consumption of 500 mA, the circuit have some 7805 voltage regulators in
parallel that reduce the voltage from 12 V to 5 V. I'd like to add a backup
rechargable battery circuit, that gives me 6 hours of backup when the main
power goes off. If somebody knows about some reliable and cheap solution i'd
appreciate it. Thanks in advance.

_________________________________________________________________
Download the latest MSN Messenger http://messenger.msn.com.my

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu