5 Sep
2008
5 Sep
'08
7:55 p.m.
On Sep 5, 2008, at 4:45 PM, Tony Duell wrote:
If you can find them, how about some DM160s (or whatever you call them
across the Pond). Little flourescent indicator tubes with 4 external
connectors. A 1.5V or so filament (directly heated cathode), a control
grid which needs to swith from 0V (on) to -3V (off) wrt the
filament and
an anonde that you really need abotu 24-30V on (but it might work with
less). They glow green when on.
These were certainly used as indicators in early transistorised
computers/peripherals.
I've never heard of these. I'd love to find some!
-Dave
--
Dave McGuire
Port Charlotte, FL
Would not a green & red Ne-2 would fit the mood
better.
If you have the HV why not go nixe tube?
I'm trying to use 12V as B+.