Homebrew Drum Computer
ard at p850ug1.demon.co.uk
Sat Dec 15 17:29:12 CST 2007
> 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).
I didn't think the NTSC system used a delay line at the receiver, but I
must admit I've never repaired a US TV set.
It's not a common component for spares companies to stock, simply because
it rarely fails. And of course more modern TVs used IC delay lines, which
are not what we want here.
When I wanted one, I went to an (alas long-gone) TV repair shop that also
sold compoennts. No, they didn't keep them in stock, but the owner found
a scrap PCB with a delay line on it. Needless to say that was acceptable.
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