Common drain amplifier, Electrical Engineering

Common Drain Amplifier

In electronics, a common-drain amplifier, as well termed as a source follower, is one type of three basic single-stage field effect transistor (FET) amplifier topologies, commonly employed as avoltage buffer. In this type of circuit the gate terminal of the transistor works as the input, the source is the output, and the drain is general to both (input and output), therefore its name. The analogous bipolar junction transistor circuit is common-collector amplifier.

Additionally, this circuit is employed to convert impedances. For instance, the Thévenin resistance of a combination of a voltage follower driven via a voltage source along with high Thévenin resistance is decreased to only the output resistance of the voltage follower, a small resistance. The resistance reduction created combination a much more perfect voltage source. On the other hand, a voltage follower inserted in between a driving stage and a high load (that is a low resistance) represents an infinite resistance (low load) to the driving stage, a benefit in coupling a voltage signal to a large load.

Posted Date: 1/11/2013 1:55:12 AM | Location : United States







Related Discussions:- Common drain amplifier, Assignment Help, Ask Question on Common drain amplifier, Get Answer, Expert's Help, Common drain amplifier Discussions

Write discussion on Common drain amplifier
Your posts are moderated
Related Questions
Calculate the current flow in 30Ω resistor for the circuit in figure using Thevenin's Theorem.

Sign flag Since D 7  bit in the  results is 0sign flag is reset. This also  shown that the results is positive.

With the help of neat diagrams illustrate the construction and working of various elements used in hydro-electric power plant. Compare hydro-electric power plant with other type

principle of resistive feedback circuit change when the square wave and triangular pulse frequencies, the amplitude of the triangle wave

Q. J and K are the external inputs to the JKFF shown in Figure. Note that gates 1 and 2 are enabled only when the clock pulse is high. Consider the four cases of operation and expl

how electromagnetic wave transmitted from the ground are bent back towards the earth when they enter a layer of ionosphere?

AC and DC distribution onboard ships

Design a low noise amplifier using an Infineon RF transistor BFP640. The amplifier is to be used to amplify the L2 GPS signal and so the centre frequency is 1227MHz and bandwidth 4

A cylindrical shell with flat ends is of 1.5 m Internal diameter and 4 m length. It is subjected to an internal pressure of 300 N/cm 2 . The principal stress is not to exceed 15 K

The five addressing modes are given below: Immediate, Register, Direct, Implied addressing modes           Register indirect,