**LED Resistor Calculator | Required Value of Resistor for LED’s Circuit Calculator**

**LED Resistor Calculator**

This LED Resistor

calculator will help you to find the proper value of resistor for LED’s circuit

to connect with battery.

calculator will help you to find the proper value of resistor for LED’s circuit

to connect with battery.

**Formula for this**

calculator

calculator

**Resistor Value**

**= (V**

_{s}– V_{F)}/ I_{F}
Where

**V**= Input Supply DC voltage

_{s}**V**= LED Forward Voltage

_{F}**I**= LED current in mA (mill amperes)

_{F}
If you want to know more about how to calculate the

Resistors values for different LED’s circuit i.e., series, parallel, and series

parallel, then read this interesting Article about the Topic.

Resistors values for different LED’s circuit i.e., series, parallel, and series

parallel, then read this interesting Article about the Topic.

**Note:**It is too

difficult to find the exact value of resistors that you have calculated. Generally,

Resistors come in standard values. If you are not able to find the exact value

of resistor that you have calculated, then select the next coming value of

resistor that you have calculated, For Example, if the calculated value is

313.5Ω, you would use the closest standard value, which

is 330 Ω. if the closest value is

not close enough, then you can make it by connecting resistors in series –

parallel configuration.

Update: you can also try

this calculator Standard Resistor Closest Value Calculator instead of the above method stated in “note”.

this calculator Standard Resistor Closest Value Calculator instead of the above method stated in “note”.

**Enter values and click on calculate. Result will display the required value of Resistor in Ohms**

**(Ω)**.

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If there is no resistor and supplied a source voltage greater than forward voltage, what will happen to voltage between i)a LED? ii) a Diode? or iii) BE junction of a transistor?<br />

calculater gives us result 33.3e+5 what mean by this plz understand me

Its mean 33.3 x 10^5 = 3330000 = 3.3M Ohm

Does this calculator work for rectified AC source voltages ?

PLEASE I NEED A DIAGRAM TO WIRE 200 GROW led 2.2, AND 3.3 VOLT 3 WATT ..

THANKS