🚀 go-pugleaf

> tedwards@aplcomm.JHUAPL.EDU writes:
> 
> Msg-ID: <447@aplcomm.JHUAPL.EDU>
> Posted: 14 Jun 91 18:09:06 GMT
> 
> Org.  : JHU/APL, Laurel, MD
> Person: Edwards Thomas G S1A x8297
> 
> In article <12530@qisoff.phx.mcd.mot.com> hbg6@citek.UUCP (John Schuch)
> writes:
> >In article <kWhnZkR@quack.sac.ca.us> mrapple@quack.sac.ca.us (Nick Sayer)
> writes:
> >>Let's say I was crazy enough to want to design and build a lazer-show
> >>controller.
> >You are looking for galvomotors. They are basicly a high horse-power
> >meter movement. Meridith Instruments in Phoenix sells used ones for
> 
> There is a book called _The Laser Cookbook_ which describes some circuits
> for driving galvos (usually just a 741 driving a complimentary pair of
> medium-power transistors).
> 
> For those of you designing a laser show, I reccommend the AD7226 quad
> 8-bit D/A converter.  It saves you from having to have a large number of
> D/A chips, opamps, and latches since it has all of that built in.
> (i.e. voltage mode D/A).
> 
> -Tom

Or, if my information source is correct, you can do what the fellow did to
control the audio-&-laser show for the old expo'86 shows in Vancouver.
Apparently he used the D-to-A stereo drive DAC output from a stock Amiga.  If
my info is correct, the Amiga ran the whole audio-visual show.

my $.02 worth

        Ed Meyer