Path: utzoo!utgpu!watmath!clyde!att!ucbvax!decwrl!labrea!glacier!jbn
From: jbn@glacier.STANFORD.EDU (John B. Nagle)
Newsgroups: sci.electronics
Subject: Re: 9-volt / rocket launcher?
Message-ID: <17942@glacier.STANFORD.EDU>
Date: 27 Dec 88 17:31:51 GMT
References: <2557@ddsw1.MCS.COM> <680@eplunix.UUCP>
Reply-To: jbn@glacier.UUCP (John B. Nagle)
Organization: Stanford University
Lines: 15


      There's an excellent solution to this guy's problem.  I have some
misgivings about posting it, but since there are other ways to make various
sorts of destructive devices, I've decided to do so.

      The highest power-to-weight ratio in batteries is found in the Polaroid
PolaPulse (TM) battery.  This is a flat object about the size of a playing 
card and about 2mm thick.  One is inside every Polaroid film pack.  These 
units are designed to deliver about 10-20 amps, as I recall, for a second
or so at a time, and provide the energy to drive the motor that forces the film 
through the developing rollers.  You can buy the batteries from Polaroid in
a somewhat more convenient form than one obtains by dismantling a film
cartridge, and Polaroid sells a developer's kit for these units.

						John Nagle