Output resistance of BJT Calculator

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✖Early voltage is entirely process-technology dependent, with the dimensions of volts per micron.Typically, V_A falls in the range of 5 V/μm to 50 V/μm.ⓘ Early voltage [V_A']			+10% -10%
✖The voltage across collector-emitter junction is the electric potential between the base and collector region of a transistor.ⓘ Voltage across collector-emitter [V_CE]			+10% -10%
✖Collector current is an amplified output current of a bipolar junction transistor.ⓘ Collector current [I_c]			+10% -10%

✖Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.ⓘ Output resistance of BJT [R]

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Credits

Payal Priya

Birsa Institute of Technology (BIT), Sindri

Payal Priya has created this Calculator and 500+ more calculators!

Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has verified this Calculator and 1000+ more calculators!

Output resistance of BJT Solution

STEP 0: Pre-Calculation Summary

Formula Used

resistance = (Early voltage+Voltage across collector-emitter)/Collector current
R = (V_A'+V_CE)/I_c
This formula uses 3 Variables

Variables Used

Early voltage - Early voltage is entirely process-technology dependent, with the dimensions of volts per micron.Typically, V_A falls in the range of 5 V/μm to 50 V/μm. (Measured in Volt Per Micrometer)
Voltage across collector-emitter - The voltage across collector-emitter junction is the electric potential between the base and collector region of a transistor. (Measured in Volt)
Collector current - Collector current is an amplified output current of a bipolar junction transistor. (Measured in Ampere)

STEP 1: Convert Input(s) to Base Unit

Early voltage: 0.025 Volt Per Micrometer --> 25000 Volt per Meter (Check conversion here)
Voltage across collector-emitter: 10 Volt --> 10 Volt No Conversion Required
Collector current: 100 Ampere --> 100 Ampere No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R = (V_A'+V_CE)/I_c --> (25000+10)/100

Evaluating ... ...

R = 250.1

STEP 3: Convert Result to Output's Unit

250.1 Ohm --> No Conversion Required

FINAL ANSWER

250.1 Ohm <-- Resistance

(Calculation completed in 00.016 seconds)

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Output resistance of BJT

< 4 Current and Voltage characteristics of transistor Calculators

Collector current when early voltage is given for NPN transistor

collector_current = Saturation current*e^(Voltage across the base–emitter junction/Thermal voltage)*(1+Voltage across collector-emitter/Early voltage) Go

Collector current when early voltage is given for PNP transistor

collector_current = Saturation current*e^(Voltage across emitter-base junction/Threshold voltage)*(1+Voltage across emitter-collector/Early voltage) Go

Output resistance of BJT

resistance = (Early voltage+Voltage across collector-emitter)/Collector current Go

Output resistance of transistor when base current is constant

resistance = -(Voltage across collector-emitter/Collector current) Go

Output resistance of BJT Formula

resistance = (Early voltage+Voltage across collector-emitter)/Collector current
R = (V_A'+V_CE)/I_c

Define the dynamic output resistance of a transistor amplifier in common - emitter configuration.

For a constant base current IB, the dynamic output resistance (r₀ is defined as the ratio of the differential change in the collector-to-emitter voltage (ΔV_CE) to the corresponding change in the collector current (ΔI_c).

How to Calculate Output resistance of BJT?

Output resistance of BJT calculator uses resistance = (Early voltage+Voltage across collector-emitter)/Collector current to calculate the Resistance, The Output resistance of BJT is the ratio of voltage to the current flowing in or out of these terminals. Resistance and is denoted by R symbol.

How to calculate Output resistance of BJT using this online calculator? To use this online calculator for Output resistance of BJT, enter Early voltage (V_A'), Voltage across collector-emitter (V_CE) and Collector current (I_c) and hit the calculate button. Here is how the Output resistance of BJT calculation can be explained with given input values -> 250.1 = (25000+10)/100.

FAQ

What is Output resistance of BJT?

The Output resistance of BJT is the ratio of voltage to the current flowing in or out of these terminals and is represented as R = (V_A'+V_CE)/I_c or resistance = (Early voltage+Voltage across collector-emitter)/Collector current. Early voltage is entirely process-technology dependent, with the dimensions of volts per micron.Typically, V_A falls in the range of 5 V/μm to 50 V/μm, The voltage across collector-emitter junction is the electric potential between the base and collector region of a transistor and Collector current is an amplified output current of a bipolar junction transistor.

How to calculate Output resistance of BJT?

The Output resistance of BJT is the ratio of voltage to the current flowing in or out of these terminals is calculated using resistance = (Early voltage+Voltage across collector-emitter)/Collector current. To calculate Output resistance of BJT, you need Early voltage (V_A'), Voltage across collector-emitter (V_CE) and Collector current (I_c). With our tool, you need to enter the respective value for Early voltage, Voltage across collector-emitter and Collector current and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Resistance?

In this formula, Resistance uses Early voltage, Voltage across collector-emitter and Collector current. We can use 4 other way(s) to calculate the same, which is/are as follows -

collector_current = Saturation current*e^(Voltage across the base–emitter junction/Thermal voltage)*(1+Voltage across collector-emitter/Early voltage)
resistance = -(Voltage across collector-emitter/Collector current)
collector_current = Saturation current*e^(Voltage across emitter-base junction/Threshold voltage)*(1+Voltage across emitter-collector/Early voltage)
resistance = (Early voltage+Voltage across collector-emitter)/Collector current

Where is the Output resistance of BJT calculator used?

Among many, Output resistance of BJT calculator is widely used in real life applications like {FormulaUses}. Here are few more real life examples -
{FormulaExamplesList}

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