Electronics - Transistors and Applications - Discussion

2. 

A JFET

[A]. is a current-controlled device
[B]. has a low input resistance
[C]. is a voltage-controlled device
[D]. is always forward-biased

Answer: Option C

Explanation:

No answer description available for this question.

Aysi said: (Dec 12, 2010)  
The FET is the voltage controlled device. since its output characteristics are controlled by input voltage.

Sudhakar said: (Jan 31, 2011)  
The output voltage and current depends on the input voltage. So it is a voltage controlled device.

Neelaji said: (Dec 9, 2011)  
When we increase the gate voltage the channel width is decreases so electrons flows throuh channel is less hence current decreases so it is a current controlled device.

Amit said: (Apr 10, 2012)  
Full form of JFET.

Janc said: (Apr 11, 2012)  
Junction Field Effect Transistor

Xyz said: (May 5, 2012)  
@Neelaj. When you say gate voltage decides the output then obviously it is a voltage controlled device

Gpo said: (Nov 9, 2012)  
All FETs are voltage controlled hence no current involved in movement of charge carriers.

Manideep said: (Jan 24, 2013)  
When the voltage is increased at the input then current increased at output that is why it is voltage controlled current source.

And we are changing voltage that is we are changing electric field. By that we named it as field effect Transistor.

Mouni_Ece said: (Mar 10, 2014)  
Between gate and source there is infinite resistance (o/c) , only voltage is present and o/p is depend on this gate source voltage (Vgs). So, JFET is voltage controlled device.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.