On Monday, 26 August 2019 08:05:38 UTC+1, Jeff Layman wrote:
On 25/08/19 19:05, wrote:
On Sun, 25 Aug 2019 10:37:07 -0700, Jeff Liebermann
wrote:

SNIP
Yeah Jeff, it really is a kit. Here's the link:
http://oscilloscopeclocknixiecrt.com/Kit.htm
I wish I had traced out the circuit before I populated the board. But
it's double sided and now really hard to see where traces go when they
hide under components.
Eric

Rather off-topic, but in one of the pictures (uncaptioned, about 2/3 to
3/4 of the way down, where the clock is on a stepped, wooden base) the
valves are nicely coloured - green on the left, purple top right, and
blue bottom right. I assume these are simply non-functional valves with
a coloured led hidden in the base. Those are pretty unusual colours for
leds; maybe a white led with a coloured filter has been used. And are
the valves non-functional? I would expect the base to get pretty hot
with the filament at that end. Not a good environment for an led.

LEDs in all sorts of oddball colours do exist, they're just a good bit more money & thus unpopular.


NT