GCS-Gate Controlled Switch

jojo September 16, 2009 1 Comment
As mentioned earlier, low-current drop out is the normal way in which the SCR is turned off. Gate-controlled switch is designed for easy opening with a reverse-biased trigger. A gate controlled switch (GCS) is closed by a positive trigger...
read more

IGBT-Insulated Gate Bipolar Transistors

jojo September 8, 2009 5 Comments
Introduction to IGBT-Insulated Gate Bipolar Transistors Insulated gate bipolar transistor (IGBT) is a new high conductance MOS gate-controlled power switch. The fabrication process is similar to that of an N-channel power MOSFET but employs an N-epitaxial layer grown on...
read more

CMOS-Complimentary Mosfet

jojo September 7, 2009 1 Comment
Introduction to CMOS-Complimentary Metal Oxide Semiconductor FET’s Complementary metal oxide semi-conductor devices are chips in which both P-channel and N-channel enhancement MOSFETs are connected in push-pull arrangement. The basic connections for CMOS are shown in figure. Above figure shows various...
read more

V-FET or Power Mosfets

jojo September 7, 2009 3 Comments
Power MOSFETs are usually constructed in V-configuration, as shown in figure. That is why, the device is sometimes called the V-MOSFET or V-FET. V-shaped cut penetrates from the device surface almost to the N+ substrate through N+, P and...
read more

EMOSFET-Enhancement MOSFET

jojo August 31, 2009 3 Comments
Although DE-MOSFET is useful in special applications, it does not enjoy widespread use. However, it played an important role in history because it was part of the evolution towards the E-mode MOSFET, a device that has revolutionized the electronic...
read more

DEMOSFET-Depletion Enhancement MOSFET

jojo April 23, 2012 9 Comments
We know that when the gate is biased negative with respect to the source in an N-channel JFET, the depletion region widths are increased. Theincrease in the depletion regions reduces the channel thickness, which increases its resistance. The net...
read more

Simple FET Amplifier

john August 28, 2009 2 Comments
From the circuit named “looking into the drain” of the FET it is seen (for small signal operation) an equivalent circuit consisting of two generators in series, one of – u times the gate signal voltage Vin and the...
read more

Characteristics of JFETS

jojo August 28, 2018 5 Comments
You may also like : Field Effect Transistors (FET) and JFET-Junction Field Effect Transistors What is a Junction Field Effect Transistor? A JFET is a semiconductor with 3 terminals, available either in N-channel or P-channel types. It is unipolar...
read more

JFET-Junction Field Effect Transistor

jojo August 4, 2017 5 Comments
As already mentioned in Field Effect Transistors (FET) , JFET’s are of two types, namely N-channel JFETs and P-channel JFETs. Generally N-channel JFETs are more preferred than P-channel. N-channel and P-channel JFETs are shown in the figures below. Basic...
read more

FET-Field Effect Transistors-Introduction

jojo November 12, 2013 No Comments
Introduction to FET-Field Effect Transistor So far we have discussed the circuit applications of ordinary transistors, in which both holes and electrons take part. This is the reason that these are sometimes called the bipolar transistors. Such transistors have...
read more