Explain about junction fet, Electrical Engineering

Assignment Help:

Q. Explain about Junction FET?

The JFET is a three-terminal, voltage-controlled current device, whereas the BJT is principally a three-terminal, current-controlled current device. The advantages associated with JFETs are much higher input resistance (on the order of 107 to 1010 ), lower noise, easier fabrication, and in some cases even the ability to handle higher currents and powers. The disadvantages, on the other hand, are slower speeds in switching circuits and smaller bandwidth for a given gain in an amplifier.

Figure shows the n-channel JFET and the p-channel JFET along with their circuit symbols. The JFET, which is a three-terminal device, consists of a single junction embedded in a semiconductor sample.When the base semiconductor forming the channel is of a n-type material, the device is known as an n-channel JFET; otherwise it is a p-channel JFET when the channel is

formed of a p-type semiconductor. The functions of source, drain, and gate are analogous to the emitter, collector, and base of the BJT. The gate provides the means to control the flow of charges between source and drain.


Related Discussions:- Explain about junction fet

Resistivity, Low and high resistivity materials and their applications

Low and high resistivity materials and their applications

Thunderstrom detector, Ask question #how to construct thunderstrom detector...

Ask question #how to construct thunderstrom detector with circuit breaker.

Explain television signal transmission, Q. Explain Television signal transm...

Q. Explain Television signal transmission? Television signals in television signal transmission are the electric signals generated by converting visual images through raster (T

What is peripheral component interconnect, What is a PCI bus? Periphera...

What is a PCI bus? Peripheral Component Interconnect: PCI bus was developed through Intel and introduced in 1993. This is geared specifically to fifth- and sixth-generation sys

Is the quantizer midriser or midtread, Q. The quantum levels of a quantizer...

Q. The quantum levels of a quantizer are separated by the step size δv = 0.2 V, with the lowest and highest levels of-3.3 V and +3.3 V, respectively. A sequence ofmessage sample

Gunn diode, write the note on gunn diode and ats applications

write the note on gunn diode and ats applications

What do you mean by retention of risk, Q. What do you mean by Retention of ...

Q. What do you mean by Retention of Risk? Retention of Risk: In case of this method, the organization voluntarily accepts the risk since either the risk is insignificant or its

Determine potential difference across resistor, Determine Potential Differe...

Determine Potential Difference: Compute the current through each element of the given network and also determine potential difference across 15 Ω resistor. Figure

Extrinsic material, Extrinsic Material In addition to thermally ge...

Extrinsic Material In addition to thermally generated carriers, it is possible to create carriers in the semiconductor by purposely introducing impurities into the crystal

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd