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04 Mar, 2002
2 of 2 people found this guide helpful.
How to Read Resistor Colour Codes
Most Resistors used in electronics will be colour coded to give their value.
This is a brief explanation of how to read the codes on the most commonly used resistors, namely the values in the E12 series
it is a simple matter of reading from left to right and assigning a value to the coloured bands.
The final band (band 4) indicates the tolerance of the resistor
To determine which way round to read the resistor is easy enough, if you read the number correctly it will be one of the standard...
8 of 8 people found this guide helpful.
What Size Resistor should I use for an LED
We are going to do some sums here, but don't panic! it really is straight forward.
LED's like electricity, and they are Greedy! They will take as much current as you give them. Sometimes they take so much they go POP!
You must limit the amount of current going through a LED with a resistor, Here is how you decide on the size.
To make an LED light requires a minimum amount of voltage. This amount depends on the LED, but usually it will be between 1.5V and 3.2V
If you have the following inf...
0 of 0 people found this guide helpful.
WAGO Connectors, lever type and Push Fit (222 series, 773 series)
Connecting cables together used to be difficult, screw terminals are not always secure, and for British Standards, (BS7671 17th edition) the terminals must be regularly checked.
WAGO have produced two types of connectors which speed up the connection process, and are classed as permanent for the purpose of the British Wiring regulations.
WAGO 222 series, Lever Connectors, come in three sizes, and are perfect for automotive wiring, and mains power wiring
The 222 series connectors are suitable...