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Base Current of Input Differential BJT Amplifier Formula

GoBase Current of Input Differential BJT Amplifier given Emitter Resistance Formula

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Base Current 2 is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on. Check FAQs

i B = \frac{i E}{β + 1}

i_B - Base Current?i_E - Emitter Current?β - Common Emitter Current Gain?

Base Current of Input Differential BJT Amplifier Example

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With units

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Here is how the Base Current of Input Differential BJT Amplifier equation looks like with Values.

Here is how the Base Current of Input Differential BJT Amplifier equation looks like with Units.

Here is how the Base Current of Input Differential BJT Amplifier equation looks like.

0.2724 = \frac{13.89}{50 + 1}

0.2724mA = \frac{13.89mA}{50 + 1}

0.2724 = \frac{13.89}{50 + 1}

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Base Current of Input Differential BJT Amplifier Solution

Follow our step by step solution on how to calculate Base Current of Input Differential BJT Amplifier?

FIRST Step Consider the formula

i B = \frac{i E}{β + 1}

Next Step Substitute values of Variables

∴

i B = \frac{13.89mA}{50 + 1}

Next Step Convert Units

∴

i B = \frac{0.0139A}{50 + 1}

Next Step Prepare to Evaluate

∴

i B = \frac{0.0139}{50 + 1}

Next Step Evaluate

∴

i B = 0.000272352941176471A

Next Step Convert to Output's Unit

∴

i B = 0.272352941176471mA

LAST Step Rounding Answer

∴

i B = 0.2724mA

Base Current of Input Differential BJT Amplifier Formula Elements

Variables

Base Current

Base Current 2 is a crucial current of bipolar junction transistor. Without the base current, the transistor cannot turn on.

Symbol: i_B

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Base Current

Emitter Current

Emitter Current is defined as the the combination of the collector AND the base current combined.

Symbol: i_E

Measurement: Electric CurrentUnit: mA

Note: Value can be positive or negative.

Formulas to find Emitter Current

Common Emitter Current Gain

Common Emitter Current Gain is defined as the ratio of change in output current divided by change in input current.

Symbol: β

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Common Emitter Current Gain

Other Formulas to find Base Current

Go Base Current of Input Differential BJT Amplifier given Emitter Resistance

i B = \frac{V id}{2 \cdot R E \cdot (β + 1)}

Other formulas in Current and Voltage category

Go Maximum Input Common-Mode Range Voltage of BJT Differential Amplifier

V cm = V i + (α \cdot 0.5 \cdot i \cdot R C)

Go First Emitter Current of BJT Differential Amplifier

i E1 = \frac{i}{1 + e^{\frac{- V id}{V th}}}

Go First Collector Current of BJT Differential Amplifier

i C1 = \frac{α \cdot i}{1 + e^{\frac{- V id}{V th}}}

Go Collector Current of BJT Differential Amplifier given Emitter Current

i c = α \cdot i E

How to Evaluate Base Current of Input Differential BJT Amplifier?

Base Current of Input Differential BJT Amplifier evaluator uses Base Current = Emitter Current/(Common Emitter Current Gain+1) to evaluate 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 evaluate Base Current of Input Differential BJT Amplifier using this online evaluator? To use this online evaluator for Base Current of Input Differential BJT Amplifier, enter Emitter Current (i_E) & Common Emitter Current Gain (β) and hit the calculate button.

FAQs on Base Current of Input Differential BJT Amplifier

What is the formula to find Base Current of Input Differential BJT Amplifier?

The formula of Base Current of Input Differential BJT Amplifier is expressed as Base Current = Emitter Current/(Common Emitter Current Gain+1). Here is an example- 272.3529 = 0.01389/(50+1).

How to calculate Base Current of Input Differential BJT Amplifier?

With Emitter Current (i_E) & Common Emitter Current Gain (β) we can find Base Current of Input Differential BJT Amplifier using the formula - Base Current = Emitter Current/(Common Emitter Current Gain+1).

What are the other ways to Calculate Base Current?

Here are the different ways to Calculate Base Current-

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

Can the Base Current of Input Differential BJT Amplifier be negative?

No, the Base Current of Input Differential BJT Amplifier, measured in Electric Current cannot be negative.

Which unit is used to measure Base Current of Input Differential BJT Amplifier?

Base Current of Input Differential BJT Amplifier is usually measured using the Milliampere[mA] for Electric Current. Ampere[mA], Microampere[mA], Centiampere[mA] are the few other units in which Base Current of Input Differential BJT Amplifier can be measured.

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