Common-Emitter Current Gain using Common-Base Current Gain Solution

STEP 0: Pre-Calculation Summary
Formula Used
Common Emitter Current Gain = Common-Base Current Gain/(1-Common-Base Current Gain)
β = α/(1-α)
This formula uses 2 Variables
Variables Used
Common Emitter Current Gain - Common emitter current gain is influenced by 2 factors: width of base region W, and relative dopings of base region and emitter region. Its range varies from 50-200.
Common-Base Current Gain - Common-base current gain α is related to β common-emitter current gain and its value is less than 1 because collector current is always less than emitter current due to recombination of electrons.
STEP 1: Convert Input(s) to Base Unit
Common-Base Current Gain: 0.985 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
β = α/(1-α) --> 0.985/(1-0.985)
Evaluating ... ...
β = 65.6666666666666
STEP 3: Convert Result to Output's Unit
65.6666666666666 --> No Conversion Required
FINAL ANSWER
65.6666666666666 65.66667 <-- Common Emitter Current Gain
(Calculation completed in 00.004 seconds)

Credits

Created by Payal Priya
Birsa Institute of Technology (BIT), Sindri
Payal Priya has created this Calculator and 600+ more calculators!
Verified by Urvi Rathod
Vishwakarma Government Engineering College (VGEC), Ahmedabad
Urvi Rathod has verified this Calculator and 1900+ more calculators!

16 Amplification Factor/Gain Calculators

Amplification Factor of BJT
Go BJT Amplification Factor = (Collector Current/Threshold Voltage)*((Positive DC Voltage+Collector-Emitter Voltage)/Collector Current)
Overall Voltage Gain of Amplifier when Load Resistance is Connected to Output
Go Voltage Gain = Common-Base Current Gain*(1/Collector Resistance+1/Load Resistance)^-1/(Signal Resistance+Emitter Resistance)
Overall Voltage Gain of Buffer Amplifier given Load Resistance
Go Voltage Gain = Load Resistance/(Load Resistance+Emitter Resistance+Signal Resistance/(Common Emitter Current Gain+1))
Overall Voltage Gain given Load Resistance of BJT
Go Voltage Gain = -Transconductance*((Collector Resistance*Load Resistance)/(Collector Resistance+Load Resistance))
Common Mode Gain of BJT
Go Common Mode Gain = -(Collector Resistance/(2*Output Resistance))*(Change in Collector Resistance/Collector Resistance)
Total Power Dissipated in BJT
Go Power = Collector-Emitter Voltage*Collector Current+Base-Emitter Voltage*Base Current
Voltage Gain given all Voltages
Go Voltage Gain = -(Supply Voltage-Collector-Emitter Voltage)/Thermal Voltage
Voltage Gain given Collector Current
Go Voltage Gain = -(Collector Current/Thermal Voltage)*Collector Resistance
Total Power Supplied in BJT
Go Power = Supply Voltage*(Collector Current+Input Current)
Common-Base Current Gain
Go Common-Base Current Gain = Common Emitter Current Gain/(Common Emitter Current Gain+1)
Common-Emitter Current Gain using Common-Base Current Gain
Go Common Emitter Current Gain = Common-Base Current Gain/(1-Common-Base Current Gain)
Open Circuit Voltage Gain given Open Circuit Transresistance
Go Open Circuit Voltage Gain = Open Circuit Transresistance/Input Resistance
Forced Common-Emitter Current Gain
Go Forced Common-Emitter Current Gain = Collector Current/Base Current
Voltage Gain given Transconductance and Collector Resistance
Go Voltage Gain = -Transconductance*Collector Resistance
Intrinsic Gain of BJT
Go Intrinsic Gain = Early Voltage/Thermal Voltage
Short-Circuit Current Gain
Go Current Gain = Output Current/Input Current

Common-Emitter Current Gain using Common-Base Current Gain Formula

Common Emitter Current Gain = Common-Base Current Gain/(1-Common-Base Current Gain)
β = α/(1-α)

On what factors current gain of common-emitter depends?

The current gain in the common-emitter circuit is obtained from the base and the collector circuit currents. Because a very small change in base current produces a large change in collector current, the current gain (β) is always greater than unity for the common-emitter circuit, a typical value is about 50.

How to Calculate Common-Emitter Current Gain using Common-Base Current Gain?

Common-Emitter Current Gain using Common-Base Current Gain calculator uses Common Emitter Current Gain = Common-Base Current Gain/(1-Common-Base Current Gain) to calculate the Common Emitter Current Gain, The Common-emitter current gain using common-base current gain is defined as the ratio of output current or collector current (IC) to the input current or base current (IB). The current gain of a transistor in CE configuration is high. Therefore, the transistor in the CE configuration is used for amplifying the current. Common Emitter Current Gain is denoted by β symbol.

How to calculate Common-Emitter Current Gain using Common-Base Current Gain using this online calculator? To use this online calculator for Common-Emitter Current Gain using Common-Base Current Gain, enter Common-Base Current Gain (α) and hit the calculate button. Here is how the Common-Emitter Current Gain using Common-Base Current Gain calculation can be explained with given input values -> 65.66667 = 0.985/(1-0.985).

FAQ

What is Common-Emitter Current Gain using Common-Base Current Gain?
The Common-emitter current gain using common-base current gain is defined as the ratio of output current or collector current (IC) to the input current or base current (IB). The current gain of a transistor in CE configuration is high. Therefore, the transistor in the CE configuration is used for amplifying the current and is represented as β = α/(1-α) or Common Emitter Current Gain = Common-Base Current Gain/(1-Common-Base Current Gain). Common-base current gain α is related to β common-emitter current gain and its value is less than 1 because collector current is always less than emitter current due to recombination of electrons.
How to calculate Common-Emitter Current Gain using Common-Base Current Gain?
The Common-emitter current gain using common-base current gain is defined as the ratio of output current or collector current (IC) to the input current or base current (IB). The current gain of a transistor in CE configuration is high. Therefore, the transistor in the CE configuration is used for amplifying the current is calculated using Common Emitter Current Gain = Common-Base Current Gain/(1-Common-Base Current Gain). To calculate Common-Emitter Current Gain using Common-Base Current Gain, you need Common-Base Current Gain (α). With our tool, you need to enter the respective value for Common-Base Current Gain and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
Let Others Know
Facebook
Twitter
Reddit
LinkedIn
Email
WhatsApp
Copied!