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Circuits designed by David Johnson, P.E.
Last Updated on: Wednesday, November 30, 2011 03:58 PM

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More  FET Circuits

High Impedance JFET Buffers
 
I have used these circuits many times.  They are great when you need a low gain AC signal amplifier with a very high input impedance.  It is good to beyond 50MHz.

Click on Drawing Below to view PDF version of Schematic

Circuit High Input Impedance FET Buffer and Amp designed by David Johnson, P.E. (Dec 18, 2004)

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