Thread: Magic Stick
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Old 15th Dec 2019, 2:06 pm   #2
Radio Wrangler
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Location: Fife, Scotland, UK.
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Default Re: Magic Stick

The brass end acts like a shorted turn partially coupled to the coil of interest, reducing its inductance. The steel adds a ferromagnetic effect, increasing L but also increasing losses. A bit of dust-iron core is a better choice than steel.

David
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