28 Feb
2009
28 Feb
'09
8:13 a.m.
Hi
Look at the minimum level of the ripple. Most linear
regulators specify 3volts of head room. Add a little for
trace drop.
If regulated lines, I'd suspect that 15v for a 12v line is enough.
If simply filtered, you'll need heavy filters or you'll drop below
the 3v line.
Dwight
From: lynchaj at yahoo.com
To: cctalk at classiccmp.org
Date: Sat, 28 Feb 2009 10:03:10 -0500
Subject: S-100 power supply voltage ranges
Hi! What are acceptable voltage supply ranges for an S-100 power supply? I
am assuming 115VAC input. My intended application is a small home brew
S-100 backplane.
I have seen the S-100 voltage rails vary but I believe +15VDC, -15VDC, and
+9VDC would be sufficient. Herb's S-100 page lists the voltages as +18VDC,
-16VDC, and +8VDC but I have seen other voltages used.
Thanks and have a nice day!
Andrew Lynch
_________________________________________________________________
Windows Live?: Life without walls.
http://windowslive.com/explore?ocid=TXT_TAGLM_WL_allup_1a_explore_032009