Transistor configurations, Other Engineering

TRANSISTOR CONFIGURATIONS:

Before a transistor can be used, it must be connected into an input circuit (by two wires) and an output circuit (two wires).  However, because the transistor has only three terminals, one of the terminals must be in both the input and output circuits; this is then called "The Common terminal".  Three circuit configurations are possible and are illustrated in figure.

759_TRANSISTOR CONFIGURATIONS.png

Note that the word 'common' refers to the transistor component connected to both the INPUT and OUTPUT.  In the common emitter configuration for example, the emitter is connected to both the input and output. 

Table shows the comparisons of the three transistor configurations

 

 

Common Emitter

 

 

Common

Base

 

 

Common Collector

 

Current Gain

 

 

20 -200

 

(0.95 - 0.995)

 

20 - 200

 

Voltage Gain

 

 

100 - 600

 

500 - 800

 

<1

 

Power Gain

 

 

Highest

 

Medium

 

Lowest

 

Input Impedance

 

 

500 - 2000W

 

50 - 200W

 

20kW - 100kW

 

Output Impedance

 

 

10 - 50 KW

 

100 kW - 1MW

 

20 - 500W

 

I/P - O/P Phase

 

 

180°

 

In Phase

 

In Phase

 

Typical Use

 

Normal Amp

Impedance matching

(low to high)

Impedance matching

(high to low)

Posted Date: 9/14/2012 6:50:02 AM | Location : United States







Related Discussions:- Transistor configurations, Assignment Help, Ask Question on Transistor configurations, Get Answer, Expert's Help, Transistor configurations Discussions

Write discussion on Transistor configurations
Your posts are moderated
Related Questions
1. Air at 1 atm, 90F, and 8 ft/s enters a thin-walled tube of 4-in diameter. The tube surface temperature is maintained at 60F. Air exits the tube at 70F. Determine the length of t

give the subject on data communiction & networking.

The atmosphere in the room was tense. Ted Kimoski, Financial Director for Global Mining, had justfinished his presentation. John Campbell, Managing Director, sat quietly making not

i need help with my outline and presentation slides

Trim tabs are small flaps attached to the rear of the main control surfaces. They can be adjusted the pilot to reduce the force required to hold the control surface in its deflecte


Comparison of FP result with experiment At the lowest test lift coefficient the flow is just subcritical (in the sense that the Mach number of the flow component normal to the

Integrator This circuit performs the calculus operation of integration. An operational amplifier with negative feedback applied via a capacitor (instead of a resistor) will pe

how to find the net profit of given data

I need the answers of these three problems. 1. How much money would be in a savings count that started with a deposit of $2,000 in year 1 with each succeeding amount increasing by