Instantaneous Power Dissipation of Emitter-Follower Calculator

✖Collector to Emitter Voltage of transistor 1 i.e Q1 is defined as the difference between the forward-bias voltages of the EBJ and the CBJ.ⓘ Collector to Emitter Voltage [V_ce]			+10% -10%
✖Collector Current of transistor 1 i.e Q1 is defined as the combination of direct emitter and base current in an amplifier.ⓘ Collector Current [I_c]			+10% -10%

✖Instantaneous Power Dissipation of transistor 1 i.e Q1 occurs when a circuit draws maximum power, which leads to a supply voltage spike due to resistances on the power line.ⓘ Instantaneous Power Dissipation of Emitter-Follower [P_I]

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Instantaneous Power Dissipation of Emitter-Follower

Formula

`"P"_{"I"} = "V"_{"ce"}*"I"_{"c"}`

Example

`"13.5mW"="2V"*"6.75mA"`

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Instantaneous Power Dissipation of Emitter-Follower Solution

STEP 0: Pre-Calculation Summary

Formula Used

Instantaneous Power Dissipation = Collector to Emitter Voltage*Collector Current
P_I = V_ce*I_c
This formula uses 3 Variables

Variables Used

Instantaneous Power Dissipation - (Measured in Watt) - Instantaneous Power Dissipation of transistor 1 i.e Q1 occurs when a circuit draws maximum power, which leads to a supply voltage spike due to resistances on the power line.
Collector to Emitter Voltage - (Measured in Volt) - Collector to Emitter Voltage of transistor 1 i.e Q1 is defined as the difference between the forward-bias voltages of the EBJ and the CBJ.
Collector Current - (Measured in Ampere) - Collector Current of transistor 1 i.e Q1 is defined as the combination of direct emitter and base current in an amplifier.

STEP 1: Convert Input(s) to Base Unit

Collector to Emitter Voltage: 2 Volt --> 2 Volt No Conversion Required
Collector Current: 6.75 Milliampere --> 0.00675 Ampere (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_I = V_ce*I_c --> 2*0.00675

Evaluating ... ...

P_I = 0.0135

STEP 3: Convert Result to Output's Unit

0.0135 Watt -->13.5 Milliwatt (Check conversion here)

FINAL ANSWER

13.5 Milliwatt <-- Instantaneous Power Dissipation

(Calculation completed in 00.020 seconds)

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Home » Engineering » Electronics » Amplifiers » Output Stages and Power Amplifiers » Class A Output Stage » Instantaneous Power Dissipation of Emitter-Follower

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Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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< 11 Class A Output Stage Calculators

Power Conversion Efficiency of Class A Output Stage

Go Power Conversion Efficiency of Class A = 1/4*(Peak Amplitude Voltage^2/(Input Bias Current*Load Resistance*Supply Voltage))

Bias Current of Emitter Follower

Go Input Bias Current = modulus((-Supply Voltage)+Saturation Voltage 2)/Load Resistance

Power Output Capability Factor

Go Power Output Capability Factor = (Maximum Output Power)/(Peak Drain Voltage*Peak Drain Current)

Peak Output Voltage Value at Average Load Power

Go Peak Amplitude Voltage = sqrt(2*Load Resistance*Average Load Power)

Instantaneous Power Dissipation of Emitter-Follower

Go Instantaneous Power Dissipation = Collector to Emitter Voltage*Collector Current

Load Power of Output Stage

Go Load Power of Output Stage = Supply Power*Power Conversion Efficiency

Supply Power of Output Stage

Go Supply Power of Output Stage = 2*Supply Voltage*Input Bias Current

Saturation Voltage between Collector-Emitter at Transistor 1

Go Saturation Voltage 1 = Supply Voltage-Maximum Voltage

Saturation Voltage between Collector-Emitter at Transistor 2

Go Saturation Voltage 2 = Minimum Voltage+Supply Voltage

Load Voltage

Go Load Voltage = Input Voltage-Base Emitter Voltage

Drain Current of Class B Amplifier

Go Drain Current = 2*(Output Current/pi)

Instantaneous Power Dissipation of Emitter-Follower Formula

Instantaneous Power Dissipation = Collector to Emitter Voltage*Collector Current
P_I = V_ce*I_c

What is class A output stage? Where are class A amplifiers used?

A Class A amplifier stage passes the same load current even when no input signal is applied so large heatsinks are needed for the output transistors. These types of devices are basically two transistors within a single package, one small “pilot” transistor and another larger “switching” transistor.

The Class A Amplifier more suitable for outdoor musical systems, since the transistor reproduces the entire audio waveform without ever cutting off. As a result, the sound is very clear and more linear, that is, it contains much lower levels of distortion.

How to Calculate Instantaneous Power Dissipation of Emitter-Follower?

Instantaneous Power Dissipation of Emitter-Follower calculator uses Instantaneous Power Dissipation = Collector to Emitter Voltage*Collector Current to calculate the Instantaneous Power Dissipation, The Instantaneous power dissipation of emitter-follower formula is the maximum amount of power that an emitter-follower circuit can dissipate in a short time interval. It is an important parameter in the design of high-speed electronic circuits as it determines the maximum power that can be handled by the circuit without causing damage to the components. Instantaneous Power Dissipation is denoted by P_I symbol.

How to calculate Instantaneous Power Dissipation of Emitter-Follower using this online calculator? To use this online calculator for Instantaneous Power Dissipation of Emitter-Follower, enter Collector to Emitter Voltage (V_ce) & Collector Current (I_c) and hit the calculate button. Here is how the Instantaneous Power Dissipation of Emitter-Follower calculation can be explained with given input values -> 13500 = 2*0.00675.

FAQ

What is Instantaneous Power Dissipation of Emitter-Follower?

The Instantaneous power dissipation of emitter-follower formula is the maximum amount of power that an emitter-follower circuit can dissipate in a short time interval. It is an important parameter in the design of high-speed electronic circuits as it determines the maximum power that can be handled by the circuit without causing damage to the components and is represented as P_I = V_ce*I_c or Instantaneous Power Dissipation = Collector to Emitter Voltage*Collector Current. Collector to Emitter Voltage of transistor 1 i.e Q1 is defined as the difference between the forward-bias voltages of the EBJ and the CBJ & Collector Current of transistor 1 i.e Q1 is defined as the combination of direct emitter and base current in an amplifier.

How to calculate Instantaneous Power Dissipation of Emitter-Follower?

The Instantaneous power dissipation of emitter-follower formula is the maximum amount of power that an emitter-follower circuit can dissipate in a short time interval. It is an important parameter in the design of high-speed electronic circuits as it determines the maximum power that can be handled by the circuit without causing damage to the components is calculated using Instantaneous Power Dissipation = Collector to Emitter Voltage*Collector Current. To calculate Instantaneous Power Dissipation of Emitter-Follower, you need Collector to Emitter Voltage (V_ce) & Collector Current (I_c). With our tool, you need to enter the respective value for Collector to Emitter Voltage & Collector Current 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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