FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Reference Current of BJT Current Mirror Formula

GoReference Current of BJT Mirror given Collector Current Formula

GoReference Current of BJT Mirror Formula

Fx Copy

LaTeX Copy

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

I ref = \frac{V DD - V BE}{R}

I_ref - Reference Current?V_DD - Supply Voltage?V_BE - Base-Emitter Voltage?R - Resistance?

Reference Current of BJT Current Mirror Example

With values

With units

Only example

Here is how the Reference Current of BJT Current Mirror equation looks like with Values.

Here is how the Reference Current of BJT Current Mirror equation looks like with Units.

Here is how the Reference Current of BJT Current Mirror equation looks like.

-2.3451 = \frac{2.5 - 5.15}{1.13}

-2.3451mA = \frac{2.5V - 5.15V}{1.13kΩ}

-2.3451 = \frac{2.5 - 5.15}{1.13}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Electronics » Category

Analog Electronics » fx Reference Current of BJT Current Mirror

Reference Current of BJT Current Mirror Solution

Follow our step by step solution on how to calculate Reference Current of BJT Current Mirror?

FIRST Step Consider the formula

I ref = \frac{V DD - V BE}{R}

Next Step Substitute values of Variables

∴

I ref = \frac{2.5V - 5.15V}{1.13kΩ}

Next Step Convert Units

∴

I ref = \frac{2.5V - 5.15V}{1130Ω}

Next Step Prepare to Evaluate

∴

I ref = \frac{2.5 - 5.15}{1130}

Next Step Evaluate

∴

I ref = -0.00234513274336283A

Next Step Convert to Output's Unit

∴

I ref = -2.34513274336283mA

LAST Step Rounding Answer

∴

I ref = -2.3451mA

Reference Current of BJT Current Mirror Formula Elements

Variables

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

Supply Voltage

Supply Voltage is the input voltage source that flows through the BJT.

Symbol: V_DD

Measurement: Electric PotentialUnit: V

Note: Value should be greater than 0.

Formulas to find Supply Voltage

Base-Emitter Voltage

Base-Emitter Voltage is the forward voltage between the base and emitter of the transistor.

Symbol: V_BE

Measurement: Electric PotentialUnit: V

Note: Value can be positive or negative.

Formulas to find Base-Emitter Voltage

Resistance

Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.

Symbol: R

Measurement: Electric ResistanceUnit: kΩ

Note: Value can be positive or negative.

Formulas to find Resistance

Other Formulas to find Reference Current

Go Reference Current of BJT Mirror given Collector Current

I ref = I c \cdot (1 + \frac{2}{β})

Go Reference Current of BJT Mirror

I ref = I c + \frac{2 \cdot I c}{β}

Other formulas in Base Current category

Go Base Current 1 of BJT

I B = \frac{I c}{β}

Go Base Current 2 of BJT

I B = (\frac{I sat}{β}) \cdot (e^{\frac{V BE}{V t}})

Go Base Current using Saturation Current in DC

I B = (\frac{I sat}{β}) \cdot e^{\frac{V BC}{V t}} + e s \cdot e^{\frac{V BC}{V t}}

Go Drain Current given Device Parameter

I d = \frac{1}{2} \cdot G m \cdot WL \cdot {(V ov - V th)}^{2} \cdot (1 + V A \cdot V DS)

How to Evaluate Reference Current of BJT Current Mirror?

Reference Current of BJT Current Mirror evaluator uses Reference Current = (Supply Voltage-Base-Emitter Voltage)/Resistance to evaluate the Reference Current, The Reference current of BJT current mirror formula is defined as a stable source of current that does not fluctuate over temperature, supply voltages, or loads. Reference Current is denoted by I_ref symbol.

How to evaluate Reference Current of BJT Current Mirror using this online evaluator? To use this online evaluator for Reference Current of BJT Current Mirror, enter Supply Voltage (V_DD), Base-Emitter Voltage (V_BE) & Resistance (R) and hit the calculate button.

FAQs on Reference Current of BJT Current Mirror

What is the formula to find Reference Current of BJT Current Mirror?

The formula of Reference Current of BJT Current Mirror is expressed as Reference Current = (Supply Voltage-Base-Emitter Voltage)/Resistance. Here is an example- -2345.132743 = (2.5-5.15)/1130.

How to calculate Reference Current of BJT Current Mirror?

With Supply Voltage (V_DD), Base-Emitter Voltage (V_BE) & Resistance (R) we can find Reference Current of BJT Current Mirror using the formula - Reference Current = (Supply Voltage-Base-Emitter Voltage)/Resistance.

What are the other ways to Calculate Reference Current?

Here are the different ways to Calculate Reference Current-

Reference Current=Collector Current*(1+2/Common Emitter Current Gain)
Reference Current=Collector Current+(2*Collector Current)/Common Emitter Current Gain

Can the Reference Current of BJT Current Mirror be negative?

Yes, the Reference Current of BJT Current Mirror, measured in Electric Current can be negative.

Which unit is used to measure Reference Current of BJT Current Mirror?

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

Let Others Know

✖

Facebook

Twitter

Copied!

Reference Current of BJT Current Mirror Formula

​GoReference Current of BJT Mirror given Collector Current Formula

​GoReference Current of BJT Mirror Formula

Reference Current of BJT Current Mirror Example

Reference Current of BJT Current Mirror Solution

Reference Current of BJT Current Mirror Formula Elements

Other Formulas to find Reference Current

Other formulas in Base Current category

How to Evaluate Reference Current of BJT Current Mirror?

FAQs on Reference Current of BJT Current Mirror

Variable Name

GoReference Current of BJT Mirror given Collector Current Formula

GoReference Current of BJT Mirror Formula