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First Emitter Current of BJT Differential Amplifier Formula

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

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

i_E1 - First Emitter Current?i - Current?V_id - Differential Input Voltage?V_th - Threshold Voltage?

First Emitter Current of BJT Differential Amplifier Example

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

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

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

549.9878 = \frac{550}{1 + e^{\frac{- 7.5}{0.7}}}

549.9878mA = \frac{550mA}{1 + e^{\frac{- 7.5V}{0.7V}}}

549.9878 = \frac{550}{1 + e^{\frac{- 7.5}{0.7}}}

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First Emitter Current of BJT Differential Amplifier Solution

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

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

i E1 = \frac{550mA}{1 + e^{\frac{- 7.5V}{0.7V}}}

Next Step Convert Units

∴

i E1 = \frac{0.55A}{1 + e^{\frac{- 7.5V}{0.7V}}}

Next Step Prepare to Evaluate

∴

i E1 = \frac{0.55}{1 + e^{\frac{- 7.5}{0.7}}}

Next Step Evaluate

∴

i E1 = 0.549987776435343A

Next Step Convert to Output's Unit

∴

i E1 = 549.987776435343mA

LAST Step Rounding Answer

∴

i E1 = 549.9878mA

First Emitter Current of BJT Differential Amplifier Formula Elements

Variables

First Emitter Current

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

Symbol: i_E1

Measurement: Electric CurrentUnit: mA

Note: Value can be positive or negative.

Formulas to find First 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 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

Go Collector Current of BJT Differential Amplifier given Emitter Resistance

i c = \frac{α \cdot V id}{2 \cdot R E}

How to Evaluate First Emitter Current of BJT Differential Amplifier?

First Emitter Current of BJT Differential Amplifier evaluator uses First Emitter Current = Current/(1+e^((-Differential Input Voltage)/Threshold Voltage)) to evaluate the First Emitter Current, The First 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. First Emitter Current is denoted by i_E1 symbol.

How to evaluate First Emitter Current of BJT Differential Amplifier using this online evaluator? To use this online evaluator for First 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 First Emitter Current of BJT Differential Amplifier

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

The formula of First Emitter Current of BJT Differential Amplifier is expressed as First Emitter Current = Current/(1+e^((-Differential Input Voltage)/Threshold Voltage)). Here is an example- 549987.8 = 0.55/(1+e^((-7.5)/0.7)).

How to calculate First Emitter Current of BJT Differential Amplifier?

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

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

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

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

First 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 First Emitter Current of BJT Differential Amplifier can be measured.

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First Emitter Current of BJT Differential Amplifier Formula

First Emitter Current of BJT Differential Amplifier Example

First Emitter Current of BJT Differential Amplifier Solution

First Emitter Current of BJT Differential Amplifier Formula Elements

Other formulas in Current and Voltage category

How to Evaluate First Emitter Current of BJT Differential Amplifier?

FAQs on First Emitter Current of BJT Differential Amplifier

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