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Second Emitter Current of BJT Differential Amplifier Formula

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Second Emitter Current is the current in emitter of first of two transistors in a large signal operation configuration. Check FAQs

i E2 = \frac{i}{1 + e^{\frac{V id}{V th}}}

i_E2 - Second Emitter Current?i - Current?V_id - Differential Input Voltage?V_th - Threshold Voltage?

Second Emitter Current of BJT Differential Amplifier Example

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Here is how the Second Emitter Current of BJT Differential Amplifier equation looks like with Values.

Here is how the Second Emitter Current of BJT Differential Amplifier equation looks like with Units.

Here is how the Second Emitter Current of BJT Differential Amplifier equation looks like.

0.0122 = \frac{550}{1 + e^{\frac{7.5}{0.7}}}

0.0122mA = \frac{550mA}{1 + e^{\frac{7.5V}{0.7V}}}

0.0122 = \frac{550}{1 + e^{\frac{7.5}{0.7}}}

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Second Emitter Current of BJT Differential Amplifier Solution

Follow our step by step solution on how to calculate Second Emitter Current of BJT Differential Amplifier?

FIRST Step Consider the formula

i E2 = \frac{i}{1 + e^{\frac{V id}{V th}}}

Next Step Substitute values of Variables

∴

i E2 = \frac{550mA}{1 + e^{\frac{7.5V}{0.7V}}}

Next Step Convert Units

∴

i E2 = \frac{0.55A}{1 + e^{\frac{7.5V}{0.7V}}}

Next Step Prepare to Evaluate

∴

i E2 = \frac{0.55}{1 + e^{\frac{7.5}{0.7}}}

Next Step Evaluate

∴

i E2 = 1.22235646571897E-05A

Next Step Convert to Output's Unit

∴

i E2 = 0.0122235646571897mA

LAST Step Rounding Answer

∴

i E2 = 0.0122mA

Second Emitter Current of BJT Differential Amplifier Formula Elements

Variables

Second Emitter Current

Second Emitter Current is the current in emitter of first of two transistors in a large signal operation configuration.

Symbol: i_E2

Measurement: Electric CurrentUnit: mA

Note: Value can be positive or negative.

Formulas to find Second Emitter Current

Current

Current is the rate of flow of charge through a conducting material.

Symbol: i

Measurement: Electric CurrentUnit: mA

Note: Value can be positive or negative.

Formulas to find Current

Differential Input Voltage

Differential Input Voltage is defined as signal input circuit where SIGNAL LO and SIGNAL HI are electrically floating with respect to ANALOG GROUND.

Symbol: V_id

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Differential Input Voltage

Threshold Voltage

Threshold Voltage is defined as the minimum amount of voltage required by the transistor to turn on.

Symbol: V_th

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Threshold Voltage

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 Second Emitter Current of BJT Differential Amplifier?

Second Emitter Current of BJT Differential Amplifier evaluator uses Second Emitter Current = Current/(1+e^((Differential Input Voltage)/Threshold Voltage)) to evaluate the Second Emitter Current, The Second emitter current of BJT differential amplifier formula is the combination of the collector AND the base current combined, the load resistance in this type of transistor configuration also has both the collector current and the input current of the base flowing through it. Second Emitter Current is denoted by i_E2 symbol.

How to evaluate Second Emitter Current of BJT Differential Amplifier using this online evaluator? To use this online evaluator for Second Emitter Current of BJT Differential Amplifier, enter Current (i), Differential Input Voltage (V_id) & Threshold Voltage (V_th) and hit the calculate button.

FAQs on Second Emitter Current of BJT Differential Amplifier

What is the formula to find Second Emitter Current of BJT Differential Amplifier?

The formula of Second Emitter Current of BJT Differential Amplifier is expressed as Second Emitter Current = Current/(1+e^((Differential Input Voltage)/Threshold Voltage)). Here is an example- 12.22356 = 550/(1+e^((7.5)/0.7)).

How to calculate Second Emitter Current of BJT Differential Amplifier?

With Current (i), Differential Input Voltage (V_id) & Threshold Voltage (V_th) we can find Second Emitter Current of BJT Differential Amplifier using the formula - Second Emitter Current = Current/(1+e^((Differential Input Voltage)/Threshold Voltage)).

Can the Second Emitter Current of BJT Differential Amplifier be negative?

Yes, the Second Emitter Current of BJT Differential Amplifier, measured in Electric Current can be negative.

Which unit is used to measure Second Emitter Current of BJT Differential Amplifier?

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

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Second Emitter Current of BJT Differential Amplifier Formula

Second Emitter Current of BJT Differential Amplifier Example

Second Emitter Current of BJT Differential Amplifier Solution

Second Emitter Current of BJT Differential Amplifier Formula Elements

Other formulas in Current and Voltage category

How to Evaluate Second Emitter Current of BJT Differential Amplifier?

FAQs on Second Emitter Current of BJT Differential Amplifier

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