What is the resistance of the color ring resistor?

The resistance value of the resistor is usually a color ring method, digital method. The color ring method is more common in general resistance.

1, color ring method

The so-called color ring method uses the color code of different colors to represent the resistance parameter. The color ring resistor has 4 color rings and 5 color rings. The meaning of each color ring is as follows.

Figure 1 color ring marked resistance value
Table 1 The meaning of the color ring of each resistor

To read the parameters of the color ring resistance, first determine the direction of the reading. In general, the color ring representing the tolerance is farther apart and wider than the other color rings. After judging the direction, you can read from left to right.

For example, the color of a 4-color ring resistor is red (2), purple (7), yellow (x10000), and silver (plus or minus 10%) from left to right, and the resistance of this resistor is 27 Ω x 10000 = 270000 Ω. It is 270KΩ, and the deviation is plus or minus 10%.

For another example, the color of a 5-color ring resistor is red (2), green (5), blue (6), red (x100), and brown (plus or minus 1%) from left to right, and the resistance of the resistor is It is 256 Ω x 100 = 25600 Ω, which is 25.0 K Ω, and the deviation is plus or minus 1%.

2, digital method

Since the resistance in the mobile phone circuit is generally small, it is rarely marked with a resistance value. Even if it is, the digital method is generally used, that is: 101 - represents a 10*10^1 Ω or 100 ohm resistor;

102——represents a resistance of 10*10^2Ω;

10^3——represents a resistance of 10KΩ;

10^4——Represents a resistance of 100KΩ.

If a resistor is labeled 22*10^3, the resistor is 22KΩ.

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