[sdiy] recycle question

[Magnus Danielson]

From: "Rude 66" <r.lekx at chello.nl>
Subject: [sdiy] recycle question
Date: Mon, 19 Jul 2004 22:39:22 +0200
Message-ID: <014501c46dd0$791dd580$bc05a33e at DESKTOPRUUD>

Ruud,

> i have a recycle question. i've taken the complete display section (well, a
> bunch of green and red led's on its own circuit board with ic's etc) out of
> an old cassette deck. it was connected to the main board with a 5 wire small
> flatcable, which is still there.
> 
> i'd like to use this in something.. volume indication in a synth, filter
> indication..etc. does anyone know how to drive this thing? i figure of the 5
> inputs to the circuits, one is ground, one is power, and 2 are left and
> right input. what sort of power does it take? could i just hook this up to,
> say, a 9v battery and an audio output of some sort and get it to work? or is
> this hopelessly simplistic? the 2 driver ic's are sharp ir2e19's, but there
> are no datasheets anywhere..
> 
> thanks!

Well, 9V should work. Naturally, if you knew how that tape-recorder was powered
it would be a clue.

You can feed it up to 12V at least:
http://www.americanmicrosemi.com/information/spec/?ss_pn=IR2E19

Oh, and you *SHOULD* put it into use again!

A good DIYer recycles at least part of something before tossing it away.
You never know when you need a middle-range missle with launch-vehicle before
you toss away the tactical multiple warhead nuclear-bombs that you had to waste
since they where driving the counters crazy. There is nothing like blowing up
the back yard just to get a decent new years eve rocket!

Cheers,
Magnus - with an ODD tube at home - photomultiplier AND 1 cm solid copper cap!