krw wrote in
:

On Sun, 17 Apr 2016 23:43:35 -0000 (UTC), John McCoy
wrote:

I do have a handle of Nixie tubes around here somewhere.
Useful for puzzling new EE grads on job interviews.

If that throws them, a Williams Tube should make 'em choke. ;-)

https://en.wikipedia.org/wiki/Williams_tube

LOL. They'd just think it was a small CRT tube.

I do have a tube op-amp, one of these:

https://www.talkbass.com/attachments...05-jpg.834796/

which is usually good to see if they understand much
about amplifier circuits.

Speaking of CRTs reminds me of one of those "everything
old is new again" things. Back in the old days, the big
Tek scopes came with Polaroid cameras, and if you got a
significant waveform you needed a record of, you took a
picture of the CRT image. With the advent of digital
storage scopes, that went away - you connected up a printer,
or saved a JPG on a USB stick, or sent it over the network,
when you needed to keep a record of a waveform. I've
noticed, tho, that the young guys don't do that anymore.
If they need a record, they pull out their phones and
take a picture of the scope.

John