Homebrew Drum Computer
M H Stein
dm561 at torfree.net
Sat Dec 15 13:34:28 CST 2007
Date: Sat, 15 Dec 2007 13:23:13 +1030
From: Robert Nansel <bnansel at bigpond.net.au>
Subject: Homebrew Drum Computer
>I thought of this, too. So far I haven't found an online source of
>them (Google search terms: "glass delay line" OR "quartz delay line"
>OR "ultrasonic delay line" TV PAL OR NTSC).
Fri Dec 14 19:10 Tony Duell wrote:
>> I wonder if you could use those glass delay lines that were used in
>> PAL colour TV receiver until fairly recently (and there must be plenty
>> still around)? Alas they have a somewhat odd delay time (a little less
>> than 64us -- one line period of the European TV signal), but I am sure
I've got some old VCR boards with 2 glass delay lines on 'em:
Markings: DL BTB85B 042 (Component # DL2K0, 6cm long, 4 pins)
And: ADL-FN2038M 337P16301 4003 (DL6A0, 3cm, 3 pins)
Just slabs of quartz with wires attached (the covers are removeable).
Might be tricky to find specs though; unfortunately no idea of the VCR
Also should have an old MS delay line somewhere.
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