From: Robin Hollands <R.Hollands@sheffield.ac.uk>
Subject: Re: HOME-BREW: Powerglove power supply
Date: Wed, 04 Sep 1996 11:08:57 +0100
Message-ID: <322D5539.A14@shef.ac.uk>
Organization: Automatic Control & Systems Engineering, University of Sheffield 


Theodore S Milker wrote:
> 
> Hi, I've currently built myself a Powerglove to PC parallel port plug
> in, from the plans in, "The Virtual Reality Construction Kit", and I
> was wondering if someone could suggest a could power supply method.

I can't give you a Radio-Shack number (not being from the US), but you
should ask for a power supply that outputs *regulated* 5V DC. These
usually come in different current ratings (often 300ma or 500ma). You
should be OK with a 300ma, but get the 500ma if you're worried. If the
current rating is too small, it won't hurt the Powerglove, but could
burn out the power supply.

Alternatively get a DC power supply with a voltage greater than 5V
(e.g.  9V unregulated, 12V, PP3 battery etc.) and pass the voltage
through a voltage regulator IC, such as the 7805. This chip has 3
pins. The one on the left is connected to +V from the power supply,
the right pin outputs 5V to the Powerglove, and the centre pin is
connected to 0V on both power supply and glove.

Cheers,

Robin

Email: r.hollands@sheffield.ac.uk
WWW: http://www.shef.ac.uk/~vrmbg/staff/rjh/rjh.html
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