7805s in parallel for cooler running?

cekdark · Post by **cekdark** » Wed Oct 05, 2005 12:40 am

basicly what the subject says, im building a portable that uses 5v from a 7805 (which gets power from a 7.2v battery), but when i run the portable from the battery charger, the 7805 overheats, and the whole thing shuts down.
my question is, would having two 7805s in parallel make it run cooler? i have several of the things laying around doing nothing, but dont have any heatsyncs.

nos_slived · Post by **nos_slived** » Wed Oct 05, 2005 12:53 am

It would less efficient, and produce more heat overall, but your 7805s would share the load, and therefore, they wouldn't overheat. You should really get some heat sinks, because they back almost everything more efficient.

cekdark · Post by **cekdark** » Wed Oct 05, 2005 1:20 am

Thanks,
I think Ill try two 7805s, and see how it runs, but now Im thinking I may just go with a dc-dc converter, Im not going for efficiency, but from what Ive been reading I think it might be less of a hassle than the voltage regulators Ive been using.