Intrinsic Gain of BJT Formula

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Intrinsic Gain is defined as the maximum gain of the BJT. Check FAQs
Ao=VAVt
Ao - Intrinsic Gain?VA - Early Voltage?Vt - Thermal Voltage?

Intrinsic Gain of BJT Example

With values
With units
Only example

Here is how the Intrinsic Gain of BJT equation looks like with Values.

Here is how the Intrinsic Gain of BJT equation looks like with Units.

Here is how the Intrinsic Gain of BJT equation looks like.

0.266Edit=1.25Edit4.7Edit
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Intrinsic Gain of BJT Solution

Follow our step by step solution on how to calculate Intrinsic Gain of BJT?

FIRST Step Consider the formula
Ao=VAVt
Next Step Substitute values of Variables
Ao=1.25V4.7V
Next Step Prepare to Evaluate
Ao=1.254.7
Next Step Evaluate
Ao=0.265957446808511
LAST Step Rounding Answer
Ao=0.266

Intrinsic Gain of BJT Formula Elements

Variables
Intrinsic Gain
Intrinsic Gain is defined as the maximum gain of the BJT.
Symbol: Ao
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.
Early Voltage
The Early voltage is a phenomenon that occurs in BJTs due to variations in width of base region as the collector-base voltage is changed. This effect changes its current gain and I/O impedance.
Symbol: VA
Measurement: Electric PotentialUnit: V
Note: Value can be positive or negative.
Thermal Voltage
Thermal Voltage is the voltage produced within the p-n junction.
Symbol: Vt
Measurement: Electric PotentialUnit: V
Note: Value can be positive or negative.

Other formulas in Amplification Factor or Gain category

​Go Common-Base Current Gain
α=ββ+1
​Go Total Power Dissipated in BJT
P=VCEIc+VBEIB
​Go Common Mode Rejection Ratio
CMRR=20log10(AdAcm)
​Go Base Current of PNP Transistor given Emitter Current
IB=Ieβ+1

How to Evaluate Intrinsic Gain of BJT?

Intrinsic Gain of BJT evaluator uses Intrinsic Gain = Early Voltage/Thermal Voltage to evaluate the Intrinsic Gain, The Intrinsic gain of BJT formula is defined as maximum possible voltage gain of typical transistor, regardless of bias point. It is stated as ratio of supply voltage and threshold voltage. Intrinsic Gain is denoted by Ao symbol.

How to evaluate Intrinsic Gain of BJT using this online evaluator? To use this online evaluator for Intrinsic Gain of BJT, enter Early Voltage (VA) & Thermal Voltage (Vt) and hit the calculate button.

FAQs on Intrinsic Gain of BJT

What is the formula to find Intrinsic Gain of BJT?
The formula of Intrinsic Gain of BJT is expressed as Intrinsic Gain = Early Voltage/Thermal Voltage. Here is an example- 0.265957 = 1.25/4.7.
How to calculate Intrinsic Gain of BJT?
With Early Voltage (VA) & Thermal Voltage (Vt) we can find Intrinsic Gain of BJT using the formula - Intrinsic Gain = Early Voltage/Thermal Voltage.
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