To know the quantity of present (ohms) {that a} resistor can deal with, it’s best to have the ability to learn the resistor shade code. Each resistor has a shade band wrapped across the middle, which tells us the quantity of present measured in ohms that the resistor can deal with. Totally different shade bands denote varied present dealing with capacities of resistors. Subsequently, understanding the colour bands ought to assist us to decide on the proper resistors. For instance, a 100 Ohms resistor has a shade band of brown, black, brown, and gold, in that order from left to proper. And a 1k resistor shade code has a shade code comprising brown, black, crimson, and gold. Not all resistors have 4-band shade codes, and you will discover some resistors with 5-band shade codes.
Decoding 1k resistor shade code
Brown is the primary shade of a 4-band 1k ohm resistor shade code adopted by black, then brown once more, and the final one is gold. Though resistors don’t have any polarity and are appropriate for any kind of orientation in a circuit, figuring out the resistor’s present dealing with functionality is crucial to decide on the proper one. For this reason you need to perceive the importance of the colours within the resistors. At a look, the order of the colours helps to know the general present dealing with capability, whereas analyzing every shade helps to know the detailed properties of resistors.
In a typical 4-band resistor, the primary two colours denote important figures. The third shade is the multiplier, and the ultimate shade represents the resistor’s tolerance which is the margin of allowable error. For instance, Gold is the final shade of the band, which means the resistor has a tolerance of 5%. It’s straightforward to identify the tolerance band printed on the resistor’s shoulder.
Find out how to learn a resistor shade code?
To decode the colour band of a 220-ohm resistor, comply with the decoding directions beneath:
Regarding a decoding chart, the primary crimson band has a price of two. So does the second crimson band, which additionally has a price of two. Subsequently, the primary two crimson bands taken collectively are equal to 22. The third band of brown shade is the multiplier which carries a price of 10 in keeping with the decoding chart. Multiplying 22 by 10 offers us 220. The final band is gold which signifies that the resistor has a 5% tolerance of margin of error.
Why use 5-band resistors?
5-band resistors have a further band after the primary three bands. For higher precision, 5-band resistors are the one alternative. Any such resistor is crucial in circuits delicate to resistance, reminiscent of engineering and scientific devices.
The strategy of decoding the 5-band shade code follows the same logic because the 4-band 1k resistor shade code. The one distinction is that the additional band denotes the sensitivity of the resistor. Merely mentioned, 5-band resistors are extra delicate than 4-band resistors.
Originally posted 2023-06-09 09:47:36.