Fet Microphone Mixer Circuit

  
A JFET transistor-is used as a high-to-low impedance converter and signal mixer. Input impedance is approximately 50.0 kQ but it can be increased by increasing R5 to R8 as high as 10 . Output is about 2 kQ, but it can be increased or decreased by changing the value of i10.
Fet Microphone Mixer Circuit - schematic

Use 560 or 680 to feed a 600- input; use 100 k to 1 for high impedance.




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