3 ms·
JFETs main application these days is for when you need very low noise, usually for precise measurements. A depletion mode MOSFET has similar behavior, but not s
by blackguardx 10y ago
JFETs main application these days is for when you need very low noise, usually for precise measurements. A depletion mode MOSFET has similar behavior, but not specs.
- PeanutNore 10y agoYeah, I see them used for that purpose and for VHF / UHF applications. A lot of precision op-amps also have JFET inputs. In guitar effects land JFETs are popular because as a class-a amplifier in common source configuration they bias the same way that a triode does. Ironically when people try to replicate tube preamp circuits by cascading JFET stages the result is anything but "very low noise". Depletion-mode MOSFETs can be cascaded like triodes without creating unacceptable (for a guitar pedal) noise levels.