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Output Current Formula

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Output Current given Reference Current is calculated based on the current value obtained in the BJT current mirror. Check FAQs

I out = I ref \cdot (\frac{I t2}{I t1})

I_out - Output Current given Reference Current?I_ref - Reference Current?I_t2 - Current in Transistor 2?I_t1 - Current in Transistor 1?

Output Current Example

With values

With units

Only example

Here is how the Output Current equation looks like with Values.

Here is how the Output Current equation looks like with Units.

Here is how the Output Current equation looks like.

29.3636 = 7.6 \cdot (\frac{4.25}{1.1})

29.3636mA = 7.6mA \cdot (\frac{4.25mA}{1.1mA})

29.3636 = 7.6 \cdot (\frac{4.25}{1.1})

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Output Current Solution

Follow our step by step solution on how to calculate Output Current?

FIRST Step Consider the formula

I out = I ref \cdot (\frac{I t2}{I t1})

Next Step Substitute values of Variables

∴

I out = 7.6mA \cdot (\frac{4.25mA}{1.1mA})

Next Step Convert Units

∴

I out = 0.0076A \cdot (\frac{0.0042A}{0.0011A})

Next Step Prepare to Evaluate

∴

I out = 0.0076 \cdot (\frac{0.0042}{0.0011})

Next Step Evaluate

∴

I out = 0.0293636363636364A

Next Step Convert to Output's Unit

∴

I out = 29.3636363636364mA

LAST Step Rounding Answer

∴

I out = 29.3636mA

Output Current Formula Elements

Variables

Output Current given Reference Current

Output Current given Reference Current is calculated based on the current value obtained in the BJT current mirror.

Symbol: I_out

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Output Current given Reference Current

Reference Current

A reference current is just a stable source of current that does not fluctuate over temperature, supply voltages or loads.

Symbol: I_ref

Measurement: Electric CurrentUnit: mA

Note: Value can be positive or negative.

Formulas to find Reference Current

Current in Transistor 2

Current in transistor 2 is the scale current flowing through the transistor Q2 of a BJT current mirror.

Symbol: I_t2

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Current in Transistor 2

Current in Transistor 1

Current in transistor 1 is the scale current flowing through the transistor Q1 of a BJT current mirror.

Symbol: I_t1

Measurement: Electric CurrentUnit: mA

Note: Value should be greater than 0.

Formulas to find Current in Transistor 1

Other formulas in IC Amplifiers category

Go Finite Output Resistance of IC Amplifier

R fo = \frac{ΔV o}{ΔI o}

Go Intrinsic Gain of IC Amplifier

G i = 2 \cdot \frac{V e}{V ov}

Go Reference Current of IC Amplifier

I ref = I o \cdot (\frac{WL}{WL 1})

Go Output Current of Wilson Current Mirror

I o = I ref \cdot (\frac{1}{1 + (\frac{2}{β^{2}})})

How to Evaluate Output Current?

Output Current evaluator uses Output Current given Reference Current = Reference Current*(Current in Transistor 2/Current in Transistor 1) to evaluate the Output Current given Reference Current, Output Current formula is defined as the ratio of the collector current at the output side Ic to the input current passed to the LED at the input side IF expressed as a percentage. Output Current given Reference Current is denoted by I_out symbol.

How to evaluate Output Current using this online evaluator? To use this online evaluator for Output Current, enter Reference Current (I_ref), Current in Transistor 2 (I_t2) & Current in Transistor 1 (I_t1) and hit the calculate button.

FAQs on Output Current

What is the formula to find Output Current?

The formula of Output Current is expressed as Output Current given Reference Current = Reference Current*(Current in Transistor 2/Current in Transistor 1). Here is an example- 29363.64 = 0.0076*(0.00425/0.0011).

How to calculate Output Current?

With Reference Current (I_ref), Current in Transistor 2 (I_t2) & Current in Transistor 1 (I_t1) we can find Output Current using the formula - Output Current given Reference Current = Reference Current*(Current in Transistor 2/Current in Transistor 1).

Can the Output Current be negative?

No, the Output Current, measured in Electric Current cannot be negative.

Which unit is used to measure Output Current?

Output Current is usually measured using the Milliampere[mA] for Electric Current. Ampere[mA], Microampere[mA], Centiampere[mA] are the few other units in which Output Current can be measured.

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Output Current Formula

Output Current Example

Output Current Solution

Output Current Formula Elements

Other formulas in IC Amplifiers category

How to Evaluate Output Current?

FAQs on Output Current

Variable Name