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Re: JFET matcher using an OpAmp


wn4isx
 

How important is gate capacitance?

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https://www.ti.com/product/JFE2140?bm-verify

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From

https://www.ti.com/lit/ds/symlink/jfe2140.pdf

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Low input capacitance: 13 pF at VDS = 5 V

? High gate-to-drain and gate-to-source breakdown

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The 2SK715 has 10pF gate capacitance.

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The jfe2140 has a slew of diodes for protection.

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I clearly don't know enough to have any idea if the jfe2140 is suitable for a loop antenna electronics.

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The jfe2140 costs $4.39 (on July 21, 2024) from Digikey.

It'd be interesting (and no I'm not asking) to learn what?

Everett uses in his clones.

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FWIW, I hate winding confusing transformers, as a dyslexic, it is way too much like tying obscure knots.

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