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  2. JFET - Wikipedia

    en.wikipedia.org/wiki/JFET

    Following Shockley's theoretical treatment on JFET in 1952, a working practical JFET was made in 1953 by George C. Dacey and Ian M. Ross. [4] Japanese engineers Jun-ichi Nishizawa and Y. Watanabe applied for a patent for a similar device in 1950 termed static induction transistor (SIT). The SIT is a type of JFET with a short channel. [4]

  3. Discrete complementary JFETS - Wikipedia

    en.wikipedia.org/wiki/Discrete_complementary_JFETS

    Improved JFET process technologies, discrete JFET devices and JFET topologies will continue to challenge highly integrated monolithic designs for sockets in high quality electronic products. The primary reasons are cost and customization. Costs are too high for integrated circuit companies to integrate customized high-performance for niche ...

  4. Field-effect transistor - Wikipedia

    en.wikipedia.org/wiki/Field-effect_transistor

    The JFET (junction field-effect transistor) uses a reverse biased p–n junction to separate the gate from the body. The static induction transistor (SIT) is a type of JFET with a short channel. The DEPFET is a FET formed in a fully depleted substrate and acts as a sensor, amplifier and memory node at the same time.

  5. Depletion and enhancement modes - Wikipedia

    en.wikipedia.org/wiki/Depletion_and_enhancement...

    Top: source, bottom: drain, left: gate, right: bulk. Voltages that lead to channel formation are not shown. In field-effect transistors (FETs), depletion mode and enhancement mode are two major transistor types, corresponding to whether the transistor is in an on state or an off state at zero gate–source voltage.

  6. Diode-connected transistor - Wikipedia

    en.wikipedia.org/wiki/Diode-connected_transistor

    the drain and source of a JFET [1] the gate and drain of a MOSFET; Diode-connected transistors are used in current mirrors to provide a voltage drop that tracks that of the other transistor as temperature changes. [2] They also have very low reverse leakage currents. [3]

  7. Common source - Wikipedia

    en.wikipedia.org/wiki/Common_source

    Figure 1: Basic N-channel JFET common-source circuit (neglecting biasing details). Figure 2: Basic N-channel JFET common-source circuit with source degeneration. In electronics, a common-source amplifier is one of three basic single-stage field-effect transistor (FET) amplifier topologies, typically used as a voltage or transconductance amplifier.

  8. Voltage-controlled resistor - Wikipedia

    en.wikipedia.org/wiki/Voltage-controlled_resistor

    The drain-to-source resistance of the JFET (R DS) and the drain resistor (R 1) form the voltage-divider network. The output voltage can be determined from the equation V out = V DC · R DS / (R 1 + R DS). An LTSpice simulation of the non-linearized VCR design verifies that the JFET resistance changes with a change in gate-to-source voltage (V ...

  9. Threshold voltage - Wikipedia

    en.wikipedia.org/wiki/Threshold_voltage

    When referring to a junction field-effect transistor (JFET), the threshold voltage is often called pinch-off voltage instead. [ 1 ] [ 2 ] This is somewhat confusing since pinch off applied to insulated-gate field-effect transistor (IGFET) refers to the channel pinching that leads to current saturation behavior under high source–drain bias ...