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Old 2nd August 2007, 07:06 PM   #11
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Originally posted by ilimzn
1X2B is a high voltage rectifier for TV CRT tubes. To be quite honest, you can probably chuck them in the bin, they are of little use but for the purpose they were designed.
They make X-rays

I've also seen them used as o'scope CRT rectifiers in the 1K-3K voltage range and I was mad once (once?) and made an ionizer rectifier for an igition coil.

Then there's BB gun fodder..... *pock*

Lotsa uses!
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Old 2nd August 2007, 11:48 PM   #12
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I wonder what the stripe of green paint is all about on the 33GY7s. I have some RCA LL500 horizontal deflection tubes with the same kind of stripe, same color. The glass envelopes are especially thick on those tubes, with a molding seam.
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Old 3rd August 2007, 01:58 AM   #13
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That's an electrically conductive shorting ring. Most of the post '65 sweeps had them as it reduced oscillations by acting like a shorted turn of an inductor, keeping much of the stray gwiddledip out of the circuitry below.
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