General > General Technical Chat
Identification help of soviet passive component
Vtile:
--- Quote from: ataradov on January 29, 2022, 10:30:02 pm ---
--- Quote from: Vtile on January 29, 2022, 10:18:58 pm ---I would assume -1500ppm/K ?
--- End quote ---
Correct. It is ppm/C officially, but it is the same thing, of course.
-1500 is one of the worst in the series. I think they the worst ones ever made were -2000.
--- End quote ---
Yep, seems definitely something that can be found from cheap pocket radio.
Case closed finally. Thanks everyone and especially to you ataradov and Vovk_Z for details.
ataradov:
Sure, there may be uses for them.
One cool feature of those small value tube capacitors is that you can "tune" them. If you wind a coil of wire around its body and solder one of the ends to a pin, you can increase the capacitance by a few pF. I've seen this done in amateur radio.
Vtile:
So many simultaneus responses...
TimFox thanks about note of tempco compensation, I do not work with oscillators in my electronic hobby so most of the time nanofarads are the lowest I do go.
The tuning is also interesting idea, I do wonder what kind of self oscillator it would be if wound to be a toroid over capacitor with fine enamel wire. :P
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