Identification of Color Ring Resistors

Black, Brown, Red, Orange, Yellow, Green, Blue, Purple, Gray, White, Gold, Silver

　　0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 5%, 10%.

　　The penultimate ring indicates the number of zeros.

　　The last digit, the error.

　　This law has a clever mnemonic: brown one red two orange is three, four yellow five green six for the blue, seven purple eight gray nine on the white, black is zero, gold five silver ten table error!

　　For example, red, yellow, brown, gold means 240 ohms.

　　Color ring resistors are divided into four rings and five rings, usually with four rings.

　　The penultimate ring, can be gold (representing × 0.1) and silver (representing × 0.01), the last ring error can be colorless (20%).

　　Five-ring resistors for precision resistors, the first three rings for the value, the last ring or error color ring, usually also gold, silver and brown three colors, gold error of 5%, silver error of 10%, brown error of 1%, colorless error of 20%, in addition to the occasional green on behalf of the error of green, green error of 0.5%. Precision resistors are commonly used in military, aerospace, etc.

　　The color ring is actually a standard set in the early days to help people distinguish between different resistance values. Nowadays, it is still widely used, such as household appliances, electronic instruments, electronic equipment can often be seen.

　　However, due to the color ring resistance is relatively large, not suitable for modern highly integrated performance requirements.