<div dir="ltr">Electrometer design is one application for matched fets, but there is also a VCA that requires a matched pair:<div><br></div><div><a href="https://www.edn.com/op-amp-linearizes-response-of-fet-vca/#:~:text=FETs%20find%20common%20use%20in,C%20is%20the%20control%20voltage">https://www.edn.com/op-amp-linearizes-response-of-fet-vca/#:~:text=FETs%20find%20common%20use%20in,C%20is%20the%20control%20voltage</a>.</div><div><br></div><div>paul perry Melbourne Australia<br><div><br></div></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Sun, Jun 22, 2025 at 6:21 AM Mike Bryant <<a href="mailto:mbryant@futurehorizons.com">mbryant@futurehorizons.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg-4933062931927560244">




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One place you do see FETs quite a lot is the muting output of mixers - they kill thumps well without distorting the output signal.</div>
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On 2025-06-21 12:53, René Schmitz wrote:</div>
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> FETs have large unit to unit variations, good for one-off hobbyist or<br>
> space mission work, but<br>
> annoying to show-stopper for mass production. So you'll not see them<br>
> that often in the wild.<br>
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