Volthaus Online LED/Resistor Calculator

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Resistor Colors and Values Chart

We have a handy chart showing the colors and values
of resistors. We have a large 1200 pixel wide version
and a huge PDF version. We hope it comes in handy.

Slightly larger version
1200 PX jpeg version click to download
Right Click and ‘Save As’
Huge PDF version click to download
Right Click and ‘Save As’

About us

Volthaus Electronic Laboratory is the home for people who love the hobby of electronics.

Check out our new electronic DIY kits.

Motion Activated Alarm Kit

$9.99 + .99 s&h (We ship to U.S. only from Austin, Texas)

If you are just beginning your journey into hobby electronics you can’t go wrong with this kit. It is simple and fun. Really fun. Educational, handy, and great for pranks

This kit includes:

PIR passive infrared motion detector (1)
9v Active buzzer (1)
Mini bread board (1)
High Quality 9v battery snap (1)
Jumper wires (5) male/female
Detailed instruction and schematic sheet
Colors May Vary

LED Single – LEDs in series – LEDs in parallel

The average LED Voltage drop is usually 1.9~2.2V
Current is usualy 20mA
Add your supply voltage and click calculate

Single led:
	Supply Voltage VOLTS Voltage Drop Across LED VOLTS Desired LED Current MILLIAMPS Calculated Limiting Resistor OHMS Nearest higher rated 10% resistor Calculated Resistor Wattage WATTS Safe pick is a resistor with power rating of WATTS
Leds in series:
	Supply Voltage VOLTS Voltage Drop Across LED VOLTS Desired LED Current MILLIAMPS How many leds connected Calculated Limiting Resistor OHMS Nearest higher rated 10% resistor Calculated Resistor Wattage WATTS Safe pick is a resistor with power rating of WATTS
Leds in parallel:
	Supply Voltage VOLTS Voltage Drop Across LED VOLTS Desired LED Current MILLIAMPS How many leds connected Calculated Limiting Resistor OHMS Nearest higher rated 10% resistor Calculated Resistor Wattage WATTS Safe pick is a resistor with power rating of WATTS