Altair 680 power supply...
chrise at pobox.com
Tue Jan 19 07:28:52 CST 2010
On Tuesday (01/19/2010 at 03:34AM -0500), Dave McGuire wrote:
> On Jan 18, 2010, at 5:00 PM, Chris Elmquist wrote:
>> Is it fair (as in rational, smart, non-stupid) to put multiple 7805 in
>> parallel? Can't say I've ever seen that done. Only the more typical
>> design of adding a pass transistor to carry more current.
> What about balancing problems? They won't be identical from part to
Then that means only one of them carries most of the current... True.
I've had very few power supply failures in my life but those that I
have had, were shorted 2N3055's used as pass transistors around 78xx
regulators. So, I have grown to not appreciate that approach either.
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