How To Read Resistors

If the 3rd band would be red instead of brown the multiplier would be 10 2 100 instead of 10 and the resistor value would be.

How to read resistors. If you have a resistor with a gold or silver band on one end you have a 5 or 10 tolerance resistor. The total resistance of the circuit is found by simply adding up the resistance values of the individual resistors. The third band is a weight value which multiplies the two significant digits by a power of ten. Green and blue are the first significant digits 56. Tolerance is the precision of the resistor and it is given as a percentage.

To determine the value of a given resistor look for the gold or silver tolerance band and rotate the resistor as in the photo on the left. 3rd digit only for 5 band resistors. The fourth band tells you the tolerance of the resistor which indicates how far off the nominal value the actual resistance could be. How to read the code. So for a 560 ohm 5 resistor the color stripes will be green blue brown and gold.

Most of these resistors will have four bands of color circling the resistor. For example a 390 resistor with a tolerance of 10 will have a value within 10 of 390 between 390 39 351 and 390 39 429 39 is 10 of 390. Read the color sequence of the resistor and search the color of the first band in the column labeled 1 st digit of the table given below. The current is the same through each resistor. Must read method of ceramic capacitor code reading series connection.

Brown is the multiplier 10 1 10 and gold is the tolerance 5. Look at the first color band and determine its color. Standard resistors have four color bands. Three of the bands tell you the nominal value which means the value the resistor was designed to have. Position the resistor with this band on the right side and again read your resistor from left to right.

And the last color. The first two bands always denote the first two digits of the resistance value in ohms. To read an axial lead resistor hold the resistor so the gold or silver band is facing to the right. Make sure to read the value of the right most color band to determine the tolerance of the resistor. Similarly search the color of the second band in the column labeled 2 nd digit.