Problem with AA5, very loud oscillating sound
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Uploader Comments (AllAmericanFiveRadio)
Video Responses
All Comments (18)
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@AllAmericanFiveRadio Oh ok I get it, for some reason i was thinking left to right on the tubes, now i see where the 12BE6 hops over to the 5OB5...
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Why is the output of the 12AT6 going to the grid of the 12BE6? I'm sure it's simple, but i'm new to this....
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Yep, they don't put in any extra parts for fun. Hope you find the schematics, keep looking they will show up sometime. Thanks.
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C5 took care of that problem, and it's amazing really to see the effect of it's absence. Every little component counts. I'm Glad that all those schematics are available, I have been trying to find a schematic for a Simpson 215 from 1938, and I just am having no luck, but anyway, loved the video Rick! It was awesome! Thanks -Robert
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Why is the output of the 12AT6 going to the grid of the 12BE6, i'm sure it's simple, but i'm a nube.
joostmee 1 year ago
Thanks joostmee
It is known as a cascade amplifier and they are very common, their everywhere. The 12BE6 amplifies the output of the 12AT6 even more. So each stage of a cascade amplifier amplifies the output signal from the previous stage, increasing the amplification as the signal progresses through the amplifier. Hope this helps.
AllAmericanFiveRadio 1 year ago
what keeps the audio current from traveling through the cap. also? i dont understand how that componant takes in the RF current and not the Audio currrent, also i find it intresting that it doesn't go: the RF current stays in the curcuit and the audio is grounded ... hmmmm ... if that makes sense... but now that i look i think some1 asked something similar to my question
73, Ben
Druidemporor 1 year ago
Hey Ben,
How radio components work and there frequency characteristics is an interesting study. I have put up three video responses to this video that should help. Rick.
AllAmericanFiveRadio 1 year ago
Thanks for posting this. It is interesting to see the importance that a tiny capacitor plays in making a radio work correctly.
HD7100 1 year ago
No unnecessary parts here.
AllAmericanFiveRadio 1 year ago