20 results found for: “JFET”.

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JFET

The junction field-effect transistor (JFET) is one of the simplest types of field-effect transistor. JFETs are three-terminal semiconductor devices that...

Last Update: 2023-12-24T07:02:03Z Word Count : 2348 Synonim JFET

Voltage-controlled resistor

resistors. The JFET is one of the more common active devices used for the design of voltage-controlled resistors. So much so, that JFET devices are packaged...

Last Update: 2023-05-15T21:26:31Z Word Count : 3080 Synonim Voltage-controlled resistor

Field-effect transistor

flow of current in a semiconductor. It comes in two types: junction FET (JFET) and metal-oxide-semiconductor FET (MOSFET). FETs have three terminals: source...

Last Update: 2024-02-03T05:42:38Z Word Count : 5954 Synonim Field-effect transistor

Discrete complementary JFETS

Discrete complementary JFETs are N-channel and P-channel JFETs that are built with a similar process technology and are designed to have similar or matching...

Last Update: 2024-03-03T01:07:39Z Word Count : 834 Synonim Discrete complementary JFETS

Transistor

1940s. In 1945 JFET was patented by Heinrich Welker. Following Shockley's theoretical treatment on JFET in 1952, a working practical JFET was made in 1953...

Last Update: 2024-03-07T23:13:54Z Word Count : 9852 Synonim Transistor

Threshold voltage

power efficiency. When referring to a junction field-effect transistor (JFET), the threshold voltage is often called pinch-off voltage instead. This is...

Last Update: 2024-03-13T06:57:16Z Word Count : 1674 Synonim Threshold voltage

Electronic symbol

N-channel junction gate field-effect transistor (JFET) P-channel junction gate field-effect transistor (JFET) Metal–oxide–semiconductor field-effect transistor...

Last Update: 2024-03-02T11:00:29Z Word Count : 1540 Synonim Electronic symbol

Diode-connected transistor

field-effect transistors (MOSFETs) and junction-gate field-effect transistors (JFETs), and in the active region for bipolar junction transistors (BJTs). A diode-connected...

Last Update: 2023-03-27T04:11:59Z Word Count : 158 Synonim Diode-connected transistor

MESFET

transistor) is a field-effect transistor semiconductor device similar to a JFET with a Schottky (metal–semiconductor) junction instead of a p–n junction...

Last Update: 2023-08-09T23:46:42Z Word Count : 457 Synonim MESFET

Constant-current diode

diode (CLD) or current-regulating diode (CRD). It consists of an n-channel JFET with the gate shorted to the source, which functions like a two-terminal...

Last Update: 2023-12-17T01:16:43Z Word Count : 202 Synonim Constant-current diode

Hartley oscillator

the same as in the patent drawing, except that the tube is replaced by a JFET, and that the battery for a negative grid bias is not needed. In 1946 Hartley...

Last Update: 2024-02-28T17:05:30Z Word Count : 1473 Synonim Hartley oscillator

Channel length modulation

several short-channel effects in MOSFET scaling. It also causes distortion in JFET amplifiers. To understand the effect, first the notion of pinch-off of the...

Last Update: 2023-07-14T15:17:49Z Word Count : 970 Synonim Channel length modulation

LSK489

The LSK489 is a monolithic N-Channel JFET designed and built by Linear Integrated Systems, Inc.LIS Inc, a Fremont, CA company. The part was introduced...

Last Update: 2023-12-18T16:26:16Z Word Count : 645 Synonim LSK489

Current source

common grid configurations can serve as constant current sources as well. A JFET can be made to act as a current source by tying its gate to its source. The...

Last Update: 2024-02-19T06:11:36Z Word Count : 4075 Synonim Current source

Unijunction transistor

is similar to that of an N-channel JFET, but p-type (gate) material surrounds the N-type (channel) material in a JFET, and the gate surface is larger than...

Last Update: 2023-12-20T16:21:54Z Word Count : 1179 Synonim Unijunction transistor

Electronic component

field-effect transistor) CNTFET (carbon nanotube field-effect transistor) JFET (junction field-effect transistor) – N-channel or P-channel SIT (static induction...

Last Update: 2024-02-29T09:46:27Z Word Count : 2703 Synonim Electronic component

Bootstrapping (electronics)

technique is to alter the non-linear C/V characteristic of the inputs of a JFET op-amp in order to decrease its distortion. In analog circuit designs, a...

Last Update: 2022-07-06T00:49:25Z Word Count : 1242 Synonim Bootstrapping (electronics)

Reference designator

tube, surge voltage protector H: Pin header J, JW: Wire link ("jumper") JFET: Junction gate field-effect transistor LA: Lightning arrester LCD: Liquid...

Last Update: 2024-03-19T16:29:47Z Word Count : 811 Synonim Reference designator

Biasing

electronics within a few meters of the microphone. The operating current of this JFET is typically 0.1 to 0.5 mA and is often referred to as bias, which is different...

Last Update: 2023-09-05T02:19:50Z Word Count : 1350 Synonim Biasing

Spectre Circuit Simulator

level 500, and CMC diode models JFET models, including the JFET, Phillips level 100 JFET, and Individual dual-gate JFET models IGBT models, including PSpice®...

Last Update: 2024-02-05T15:12:15Z Word Count : 588 Synonim Spectre Circuit Simulator

Main result

JFET

The junction field-effect transistor (JFET) is one of the simplest types of field-effect transistor. JFETs are three-terminal semiconductor devices that can be used as electronically controlled switches or resistors, or to build amplifiers. Unlike bipolar junction transistors, JFETs are exclusively voltage-controlled in that they do not need a biasing current. Electric charge flows through a semiconducting channel between source and drain terminals. By applying a reverse bias voltage to a gate terminal, the channel is pinched, so that the electric current is impeded or switched off completely. A JFET is usually conducting when there is zero voltage between its gate and source terminals. If a potential difference of the proper polarity is applied between its gate and source terminals, the JFET will be more resistive to current flow, which means less current would flow in the channel between the source and drain terminals. JFETs are sometimes referred to as depletion-mode devices, as they rely on the principle of a depletion region, which is devoid of majority charge carriers. The depletion region has to be closed to enable current to flow. JFETs can have an n-type or p-type channel. In the n-type, if the voltage applied to the gate is negative with respect to the source, the current will be reduced (similarly in the p-type, if the voltage applied to the gate is positive with respect to the source). Because a JFET in a common source or common drain configuration has a large input impedance (sometimes on the order of 1010 ohms), little current is drawn from circuits used as input to the gate.


JFET
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