And a quick video showing that more of the lamps in the display are now working:
(I need to get a camera that can close focus!!)
-Pat
As much as I enjoyed the video, I think you should stop making them... for the good of your TE !
You are too nervouis when on camera, at the beginning you dropped the display assembly then tools soon after !
The health andf well being of your TE comes first, our curiosity second.... which is satisfied anyway with the still pics.
That display unit looks really cool and cleverly designed indeed !
Thanks to your pics and video I now realize I was wrong about how I thought this antique display technology worked !
From your previous videos, with all the noise the instrument was making when those digits were changing, I thought the display was a mechanical device and the noise were the digits being being moved in an out, like you have on some old alarm clocks...
But no ! So the noise is entirely due to the switches behind the display, but the display itself is 100% static, no moving parts. The 10 digits are all stacked up, immobile, made of an engraved piece of glass or perspex, that's lit from the bottom/edge via all these lamps ! How cool... so the display itself can't wear out and can be operated at high speed, no worries.
So it's very much the same concept as Nixie tubes, all digits stacked in front of one another, common terminal and light the digits you are interested in. Only difference is the source of the light. Incandescent in this meter, and gas discharge in the Nixie.
So this old display is actually more repairable than a Nixie... all that can go wrong is a bulb frying from being turned on and off all the time at high speed, but they are designed to be very easily replaced so no worries, they anticipated that. Whereas the Nixie once it wears out or loses gas or whatever... not much you can do !
Yeah I like your instrument more and more, really cool display, they came up wit a really nice design for something this old !
May you keep ti running for many years to come.
The one thing I don't quite understand though, is that it looks like there are only 8 bulbs per digit, so not sure how they light up the two remaining ones ?!