Category: Main page

Electronics Calculators

3mm yellow

2.1 V
20 mA

matte

3mm green

2.3 V
20 mA

matte

3mm red

1.9 V
20 mA

matte

3mm blue

2.9 V
20 mA

transparent

5mm yellow

2.1 V
20 mA

matte

5mm green

2.3 V
20 mA

matte

5mm red

1.9 V
20 mA

matte

5mm bright white, blue

3.6 V
75 mA

transparent

10mm bright white, blue

3.2 V
20 mA

transparent

Cree XLamp MX3

3.7 V
350 mA

white

LED Calculator

Power supply voltage (V):

LED voltage drop (V): [select]

LED current rating (mA): [select]

Number of LEDs:

Wiring Diagram

Schematic

Other layout of LEDs

Save calculation on the picture

4 bands resistor

shiva 2013-02-13 08:19:27

thanks for this calculator
it is use full for led design for hobby

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L.D.Desai. 2012-10-08 10:07:16

This is good page but it should have possibility of selecting circuits. e.g. 8 LED's in series

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+10

Admin 2012-10-08 10:08:26

You can On/Off chekbox "Other layout of LEDs"

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+12

ranjeet 2012-06-23 16:43:13

This site is very good. Circuits will be made v easy, thanks you

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+16

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