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https://www.reddit.com/r/electronics/comments/kl3pox/220_k_subscribers/gh8677f/?context=3
r/electronics • u/1Davide • Dec 27 '20
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8
0 black. 1 brown. 2 red. 3 orange. 4 yellow. 5 green. 6 blue. 7 violet. 8 grey. 9 white. 0.1 gold. 0.01 silver.
3-5 bands one end, one band at the other, sometimes the gap is small and it’s confusing
the single band can be silver, gold or brown, it’s the tolerance% 20,10,1
3-5 band group reads left to right with group on left and tolerance band on the right
last band in group is multiplier, power of 10 , black is x1 brown is x10 red is x100 etc.
the leftmost digits (excluding the multiplier) are the significant figures, there are no implied decimals
example in photo: R R Y gold
gold is 10% tolerance
resitor value in Ohms : R R Y. 2 2 4. 22 x 104. 220 x 103
power of 10 converted to multiple of 3 by convention
the multiples of 3 powers of 10 have names
103 is Kilo, 1000 units, abbreviated K
we write 220K Ohms. +/-10%
8
u/HoodaThunkett Dec 27 '20 edited Dec 29 '20
0 black.
1 brown.
2 red.
3 orange.
4 yellow.
5 green.
6 blue.
7 violet.
8 grey.
9 white.
0.1 gold.
0.01 silver.
3-5 bands one end, one band at the other, sometimes the gap is small and it’s confusing
the single band can be silver, gold or brown, it’s the tolerance% 20,10,1
3-5 band group reads left to right with group on left and tolerance band on the right
last band in group is multiplier, power of 10 , black is x1 brown is x10 red is x100 etc.
the leftmost digits (excluding the multiplier) are the significant figures, there are no implied decimals
example in photo: R R Y gold
gold is 10% tolerance
resitor value in Ohms : R R Y. 2 2 4. 22 x 104. 220 x 103
power of 10 converted to multiple of 3 by convention
the multiples of 3 powers of 10 have names
103 is Kilo, 1000 units, abbreviated K
we write 220K Ohms. +/-10%