Emitter Current of BJT Differential Amplifier Calculator

✖Differential Input Voltage is defined as signal input circuit where SIGNAL LO and SIGNAL HI are electrically floating with respect to ANALOG GROUND.ⓘ Differential Input Voltage [V_id]			+10% -10%
✖Base Emitter Resistance is a small resistance that is typically in the range of a few ohms and is connected with base and emitter junctions.ⓘ Base Emitter Resistance [r_E]			+10% -10%
✖Collector Emitter Resistance is a large resistance that is typically in the range of a few hundred ohms to thousand ohms and is connected with collector and emitter junctions.ⓘ Collector Emitter Resistance [R_CE]			+10% -10%

✖Emitter Current is defined as the the combination of the collector AND the base current combined.ⓘ Emitter Current of BJT Differential Amplifier [i_E]

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Emitter Current of BJT Differential Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Emitter Current = Differential Input Voltage/(2*Base Emitter Resistance+2*Collector Emitter Resistance)
i_E = V_id/(2*r_E+2*R_CE)
This formula uses 4 Variables

Variables Used

Emitter Current - (Measured in Ampere) - Emitter Current is defined as the the combination of the collector AND the base current combined.
Differential Input Voltage - (Measured in Volt) - Differential Input Voltage is defined as signal input circuit where SIGNAL LO and SIGNAL HI are electrically floating with respect to ANALOG GROUND.
Base Emitter Resistance - (Measured in Ohm) - Base Emitter Resistance is a small resistance that is typically in the range of a few ohms and is connected with base and emitter junctions.
Collector Emitter Resistance - (Measured in Ohm) - Collector Emitter Resistance is a large resistance that is typically in the range of a few hundred ohms to thousand ohms and is connected with collector and emitter junctions.

STEP 1: Convert Input(s) to Base Unit

Differential Input Voltage: 7.5 Volt --> 7.5 Volt No Conversion Required
Base Emitter Resistance: 0.13 Kilohm --> 130 Ohm (Check conversion here)
Collector Emitter Resistance: 0.14 Kilohm --> 140 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

i_E = V_id/(2*r_E+2*R_CE) --> 7.5/(2*130+2*140)

Evaluating ... ...

i_E = 0.0138888888888889

STEP 3: Convert Result to Output's Unit

0.0138888888888889 Ampere -->13.8888888888889 Milliampere (Check conversion here)

FINAL ANSWER

13.8888888888889 ≈ 13.88889 Milliampere <-- Emitter 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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< 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

Emitter Current of BJT Differential Amplifier Formula

LaTeX Go

Emitter Current = Differential Input Voltage/(2*Base Emitter Resistance+2*Collector Emitter Resistance)
i_E = V_id/(2*r_E+2*R_CE)

What is the emitter current of a BJT?

The emitter current is the sum of the base and collector currents, in compliance with Kirchhoff's Current Law. No current through the base of the transistor shuts the transistor off like an open switch and prevents current through the collector.

How to Calculate Emitter Current of BJT Differential Amplifier?

Emitter Current of BJT Differential Amplifier calculator uses Emitter Current = Differential Input Voltage/(2*Base Emitter Resistance+2*Collector Emitter Resistance) to calculate the Emitter Current, The Emitter current of BJT differential amplifier formula is defined as the total current flowing into or out of the emitter terminal of the transistor pair. Emitter Current is denoted by i_E symbol.

How to calculate Emitter Current of BJT Differential Amplifier using this online calculator? To use this online calculator for Emitter Current of BJT Differential Amplifier, enter Differential Input Voltage (V_id), Base Emitter Resistance (r_E) & Collector Emitter Resistance (R_CE) and hit the calculate button. Here is how the Emitter Current of BJT Differential Amplifier calculation can be explained with given input values -> 13888.89 = 7.5/(2*130+2*140).

FAQ

What is Emitter Current of BJT Differential Amplifier?

The Emitter current of BJT differential amplifier formula is defined as the total current flowing into or out of the emitter terminal of the transistor pair and is represented as i_E = V_id/(2*r_E+2*R_CE) or Emitter Current = Differential Input Voltage/(2*Base Emitter Resistance+2*Collector Emitter Resistance). Differential Input Voltage is defined as signal input circuit where SIGNAL LO and SIGNAL HI are electrically floating with respect to ANALOG GROUND, Base Emitter Resistance is a small resistance that is typically in the range of a few ohms and is connected with base and emitter junctions & Collector Emitter Resistance is a large resistance that is typically in the range of a few hundred ohms to thousand ohms and is connected with collector and emitter junctions.

How to calculate Emitter Current of BJT Differential Amplifier?

The Emitter current of BJT differential amplifier formula is defined as the total current flowing into or out of the emitter terminal of the transistor pair is calculated using Emitter Current = Differential Input Voltage/(2*Base Emitter Resistance+2*Collector Emitter Resistance). To calculate Emitter Current of BJT Differential Amplifier, you need Differential Input Voltage (V_id), Base Emitter Resistance (r_E) & Collector Emitter Resistance (R_CE). With our tool, you need to enter the respective value for Differential Input Voltage, Base Emitter Resistance & Collector Emitter Resistance 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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