Like this maybe?  It is just a bit over 100=80.

http://fi.mouser.com/ProductDetail/Extech/382200/?qs=3DsGAEpiMZZMtd%252b2RM=
Oh0Ly7qb3JS4s7DRPHutssAu1YU%3d


________________________________________
From: piclist-bounces@mit.edu [piclist-bounces@mit.edu] on behalf of peter =
green [plugwash@p10link.net]
Sent: 04 October 2013 13:05
To: Microcontroller discussion list - Public.
Subject: Re: [OT] Power/Voltage Question

If you have the cash I'd get yourself a laboratory power supply with two
variable outputs. Something like
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_211713_=
-1


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