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#6
July 11th 06, 06:54 AM
posted to rec.radio.amateur.homebrew
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Toroid or molded inductor in low voltage tank?
On 2006-07-10, Ben Jackson wrote:
I actually have such a circuit built, and I took some measurements today. I'll wind a 1.8uH inductor on a T37-2 tonight and compare. Ok, I wound 20 turns of about 30ga wire on a T30-2 and compared before/ after (each with the trim cap set for peak) and it's about 2.75V p-p vs 2.0V p-p, or ~3dB. I'll put it on the spectrum analyzer at work again to make sure the unwanted products are still in the same place, but it looks like a win for high Q. Thanks to everyone who replied, it was very educational! Anyone have any tips for securing fine-wire toroids in Ugly/Manhattan construction?  -- Ben Jackson AD7GD http://www.ben.com/ |
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