They would make perfect indicators for short circuits.

The greatest scientific discovery of all time is that you can tell your sister "Put your tongue on this battery" :-)

The Soviets made some really interesting components.

I have used the 2 leg version in my Nixie clocks! (colon)

I have touch panel containing 5 of these (can still be found on eBay). The metal buttons you touch to turn each one on (and the load you want to switch on) are connected to the gate through a 220K resistor. I'm just wondering how you would turn them off again though because, obviously, touching one of the other 5 buttons won't turn the lit one off and you end up with multiple lit indicators. Still wondering how these panels were used.

@harlanfalejczyk2478

Жыл бұрын

usually the power supply for these tubes is unfiltered rectified mains (half or full) so it’s going close to zero somewhere around 25-60 Hz then coming back up to striking voltage, so you only have to worry about them staying on over fairly short timescales. i would like to know what the touchpads were being used for, i haven’t a clue.

Something that might be interesting, since they are intended for a switching purpose, is to measure the switching time on the scope. Compare it to say an SCR. Just a thought.

Do these last longer than vacuum tubes considering they don't have a filament?

Try melting that "tin" with your soldering iron and you'll discover it's not tin :)

That is a thyratron tube. see value in wikipedia

Once triggered and conducting can a voltage on the gate modulate the anode current ?

@IMSAIGuy

2 жыл бұрын

don't know

@vincei4252

2 жыл бұрын

@@IMSAIGuy Ok. I think I'll buy some because the structure of the gate it looks like it could. Would be fun to build an amp or regenerative radio out of these.

Interesting. Did you get them on ebay?

@IMSAIGuy

2 жыл бұрын

yes

But could you use them as FET?

@IMSAIGuy

2 жыл бұрын

that's sort of what they act like but only on/off

@ellisgl

2 жыл бұрын

@@IMSAIGuy well there goes my plans of making a funky tube mic. 😂