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2
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3answers
207 views

How do glass tube fuses work?

This may be the an unspeakably stupid question for an electrical/computer engineering student to ask, but I ran across a few parts I didn't recognize (which, after some research, I found out were ...
-3
votes
3answers
260 views

How can I repair my old tube TV safely?

I got an old Nokia tube television from my grandmother. I tested it, but there is no picture. I can hear the audio. The filament is not glowing. I am studying EE, but there I only dealt with low ...
1
vote
3answers
301 views

Trying to get that tube sound from a gainclone amp

A Gainclone amplifier makes for a nice simple benchmark/monitor amp. It is a class AB linear amplifier capable of 20 W - 120 W of power, and is based on a monolithic amplifier chip such as the LM1875, ...
4
votes
2answers
112 views

Testing an old Geiger tube?

I have an old Soviet personal radiation dosimeter that I broke as a kid by dropping it into water. I opened it up a while ago and the electronics in there were quite simple - mainly a ~10cm Geiger ...
4
votes
3answers
389 views

Can someone explain this tube amplifier circuit for me?

I have a tube radio that has really low output (I mean the sound is barely audible at full volume). Probably some capacitor in the LF amp failed. However, after I downloaded the schematic diagram, I ...
7
votes
1answer
233 views

Thyratrons: How they work, what they are used for, and how to read their datasheets

I recently ran into an interesting device called a thyratron. I have a basic understanding of thyratrons as gas filled vacuum tubes. I understand that they can switch large amounts of currents and ...