19 Jan
2010
19 Jan
'10
4:44 a.m.
----- Original Message -----
From: "Dave McGuire" <mcguire at neurotica.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Tuesday, January 19, 2010 8:34 AM
Subject: [personal] Re: Altair 680 power supply...
On Jan 18, 2010, at 5:00 PM, Chris Elmquist wrote:
What's the current ?, 78S05 will give 2A
7805 cannot be directly paralleled due to the small difference in regulation
points part to part. You would need a small value series resistor per part
to load share.
Best regards,
Mike Hatch
soemtron.org
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
part..
-Dave
--
Dave McGuire
Port Charlotte, FL