Filament String
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All Comments (15)
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The work of a great detective! He knows his stuff!
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Hey John,
Thanks. You-all have a great and happy new year!!
Regards,
Rick
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Thanks!
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Thanks!
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Hi there, Rick! I'm repairing a Philips 5 tube radio, which has the filament string connected in series, similar to this one. I noticed that when I turn it on, the filament of one of the tubes (the UF89) gets brighter than it should be , and then dims as the other filaments start to glow. I don't know if that's much of a problem, since the tubes (except for the rectifier) are all original, but I'd like to know your opinion about it. Thank you very much in advance, Rick!
Zirok1982 1 month ago in playlist Favorite videos
@Zirok1982
Yes, that probable is normal. I have seen radios do that, its always scary though.
AllAmericanFiveRadio 1 month ago
Great job, Rick! Barry asked me about this one, and I did not have a clue. I never would have thought that bypass would cause the heater string to continue to work.
eufaula1 3 years ago
Thanks. Well I've been working on radios and electronic equipment starting in grade school. I had the good fortune to know some people who guided my troubleshooting skills and I also got some tremendous training from the USAF. I wrote my books in that similar style.
AllAmericanFiveRadio 3 years ago
Having that second lamp in series might have helped to keep it from blowing.
Hammondlover2 3 years ago
Yes, exactly.
AllAmericanFiveRadio 3 years ago