Base Current of Input Differential BJT Amplifier Calculator

✖Emitter Current is defined as the the combination of the collector AND the base current combined.ⓘ Emitter Current [i_E]			+10% -10%
✖Common Emitter Current Gain is defined as the ratio of change in output current divided by change in input current.ⓘ Common Emitter Current Gain [β]			+10% -10%

✖Base Current 2 is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on.ⓘ Base Current of Input Differential BJT Amplifier [i_B]

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Base Current of Input Differential BJT Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Base Current = Emitter Current/(Common Emitter Current Gain+1)
i_B = i_E/(β+1)
This formula uses 3 Variables

Variables Used

Base Current - (Measured in Ampere) - Base Current 2 is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on.
Emitter Current - (Measured in Ampere) - Emitter Current is defined as the the combination of the collector AND the base current combined.
Common Emitter Current Gain - Common Emitter Current Gain is defined as the ratio of change in output current divided by change in input current.

STEP 1: Convert Input(s) to Base Unit

Emitter Current: 13.89 Milliampere --> 0.01389 Ampere (Check conversion here)
Common Emitter Current Gain: 50 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

i_B = i_E/(β+1) --> 0.01389/(50+1)

Evaluating ... ...

i_B = 0.000272352941176471

STEP 3: Convert Result to Output's Unit

0.000272352941176471 Ampere -->0.272352941176471 Milliampere (Check conversion here)

FINAL ANSWER

0.272352941176471 ≈ 0.272353 Milliampere <-- Base Current

(Calculation completed in 00.004 seconds)

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

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< Current and Voltage Calculators

First Collector Current of BJT Differential Amplifier

LaTeX Go First Collector Current = (Common Base Current Gain*Current)/(1+e^((-Differential Input Voltage)/Threshold Voltage))

Maximum Input Common-Mode Range Voltage of BJT Differential Amplifier

LaTeX Go Maximum Common Mode Range = Input Voltage+(Common Base Current Gain*0.5*Current*Collector Resistance)

First Emitter Current of BJT Differential Amplifier

LaTeX Go First Emitter Current = Current/(1+e^((-Differential Input Voltage)/Threshold Voltage))

Collector Current of BJT Differential Amplifier given Emitter Current

LaTeX Go Collector Current = Common Base Current Gain*Emitter Current

Base Current of Input Differential BJT Amplifier Formula

LaTeX Go

Base Current = Emitter Current/(Common Emitter Current Gain+1)
i_B = i_E/(β+1)

What is the function of a differential amplifier?

Differential amplifiers are used mainly to suppress noise. Noise consists of typical differential noise and common-mode noise, of which the latter can easily be suppressed with an op-amp.

How to Calculate Base Current of Input Differential BJT Amplifier?

Base Current of Input Differential BJT Amplifier calculator uses Base Current = Emitter Current/(Common Emitter Current Gain+1) to calculate the Base Current, The Base current of input differential BJT Amplifier formula refers to the currents flowing into the base terminals of the transistors that form the differential pair. These currents play a crucial role in the operation of the amplifier. Base Current is denoted by i_B symbol.

How to calculate Base Current of Input Differential BJT Amplifier using this online calculator? To use this online calculator for Base Current of Input Differential BJT Amplifier, enter Emitter Current (i_E) & Common Emitter Current Gain (β) and hit the calculate button. Here is how the Base Current of Input Differential BJT Amplifier calculation can be explained with given input values -> 272.3529 = 0.01389/(50+1).

FAQ

What is Base Current of Input Differential BJT Amplifier?

The Base current of input differential BJT Amplifier formula refers to the currents flowing into the base terminals of the transistors that form the differential pair. These currents play a crucial role in the operation of the amplifier and is represented as i_B = i_E/(β+1) or Base Current = Emitter Current/(Common Emitter Current Gain+1). Emitter Current is defined as the the combination of the collector AND the base current combined & Common Emitter Current Gain is defined as the ratio of change in output current divided by change in input current.

How to calculate Base Current of Input Differential BJT Amplifier?

The Base current of input differential BJT Amplifier formula refers to the currents flowing into the base terminals of the transistors that form the differential pair. These currents play a crucial role in the operation of the amplifier is calculated using Base Current = Emitter Current/(Common Emitter Current Gain+1). To calculate Base Current of Input Differential BJT Amplifier, you need Emitter Current (i_E) & Common Emitter Current Gain (β). With our tool, you need to enter the respective value for Emitter Current & Common Emitter Current Gain and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Base Current?

In this formula, Base Current uses Emitter Current & Common Emitter Current Gain. We can use 1 other way(s) to calculate the same, which is/are as follows -

Base Current = Differential Input Voltage/(2*Emitter Resistance*(Common Emitter Current Gain+1))

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