Intrinsic Gain of BJT Calculator

✖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.ⓘ Early Voltage [V_A]			+10% -10%
✖Thermal Voltage is the voltage produced within the p-n junction.ⓘ Thermal Voltage [V_t]			+10% -10%

✖Intrinsic Gain is defined as the maximum gain of the BJT.ⓘ Intrinsic Gain of BJT [A_o]

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Formula

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Intrinsic Gain of BJT

Formula

A o = \frac{V A}{V t}

Example

0.265957 = \frac{1.25 V}{4.7 V}

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Intrinsic Gain of BJT Solution

STEP 0: Pre-Calculation Summary

Formula Used

Intrinsic Gain = Early Voltage/Thermal Voltage
A_o = V_A/V_t
This formula uses 3 Variables

Variables Used

Intrinsic Gain - Intrinsic Gain is defined as the maximum gain of the BJT.
Early Voltage - (Measured in Volt) - 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.
Thermal Voltage - (Measured in Volt) - Thermal Voltage is the voltage produced within the p-n junction.

STEP 1: Convert Input(s) to Base Unit

Early Voltage: 1.25 Volt --> 1.25 Volt No Conversion Required
Thermal Voltage: 4.7 Volt --> 4.7 Volt No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

A_o = V_A/V_t --> 1.25/4.7

Evaluating ... ...

A_o = 0.265957446808511

STEP 3: Convert Result to Output's Unit

0.265957446808511 --> No Conversion Required

FINAL ANSWER

0.265957446808511 ≈ 0.265957 <-- Intrinsic Gain

(Calculation completed in 00.004 seconds)

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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Vishwakarma Government Engineering College (VGEC), Ahmedabad

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< Amplification Factor or Gain Calculators

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

Open Circuit Voltage Gain given Open Circuit Transresistance

Go Open Circuit Voltage Gain = Open Circuit Transresistance/Input Resistance

Short-Circuit Current Gain

Go Current Gain = Output Current/Input Current

< BJT Circuit Calculators

Total Power Dissipated in BJT

Go Power = Collector-Emitter Voltage*Collector Current+Base-Emitter Voltage*Base Current

Common Mode Rejection Ratio

Go Common Mode Rejection Ratio = 20*log10(Differential Mode Gain/Common Mode Gain)

Common-Base Current Gain

Go Common-Base Current Gain = Common Emitter Current Gain/(Common Emitter Current Gain+1)

Intrinsic Gain of BJT

Go Intrinsic Gain = Early Voltage/Thermal Voltage

Intrinsic Gain of BJT Formula

Intrinsic Gain = Early Voltage/Thermal Voltage
A_o = V_A/V_t

Which transistor has higher gain BJT or MOS and why?

BJT has more gain than MOSFET because MOSFET shows Quadratic I-V characteristics and BJT shows Exponential I-V characteristics and the change in exponential behavior is more as compared to Quadratic behavior.

How to Calculate Intrinsic Gain of BJT?

Intrinsic Gain of BJT calculator uses Intrinsic Gain = Early Voltage/Thermal Voltage to calculate 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 A_o symbol.

How to calculate Intrinsic Gain of BJT using this online calculator? To use this online calculator for Intrinsic Gain of BJT, enter Early Voltage (V_A) & Thermal Voltage (V_t) and hit the calculate button. Here is how the Intrinsic Gain of BJT calculation can be explained with given input values -> 0.265957 = 1.25/4.7.

FAQ

What is Intrinsic Gain of BJT?

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 and is represented as A_o = V_A/V_t or Intrinsic Gain = Early Voltage/Thermal 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 & Thermal Voltage is the voltage produced within the p-n junction.

How to calculate Intrinsic Gain of BJT?

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 is calculated using Intrinsic Gain = Early Voltage/Thermal Voltage. To calculate Intrinsic Gain of BJT, you need Early Voltage (V_A) & Thermal Voltage (V_t). With our tool, you need to enter the respective value for Early Voltage & Thermal Voltage and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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