S-100 power supply voltage ranges

[dwight elvey]

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
> 

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