Mike Coon wrote:

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On Saturday, 23 December 2017 22:16:37 UTC, frank wrote:
Hi all,
sorry for the dumb question, but I'm not finding any good info on the net
it seems. I often see in old (CRT) TV chassis some resistors with
a standard 4 bands code (the 4th is Gold) plus a 5th
band always yellow, for example Brown Black Black Gold Yellow (measures 10
ohms as expected).
What's the meaning of the additional yellow band?
Thanks in advance
Frank

yellow is used in lieu of gold for tolerance - it's non-metallic.




In which case why on earth would you have both? ("Lieu" implies
substitution!)


** I have two 1W, MF resistors here,


R1 = brown, black, gold, gold.

R2 = brown, black, back, silver, brown.

Can you say what their values and tolerances are ?


..... Phil