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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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yellow 5th band R
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 |
#2
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yellow 5th band R
On 12/23/2017 5:16 PM, 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 I don't think yellow was an option on 5 band resistors, it was on 6 band where it was the temperature coefficient. |
#3
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yellow 5th band R
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. NT |
#4
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yellow 5th band R
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#5
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yellow 5th band R
Mike Coon wrote:
----------------- 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 |
#6
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yellow 5th band R
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#7
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yellow 5th band R
On Sunday, 24 December 2017 09:19:48 UTC, Mike Coon wrote:
In article , tabbypurr says... 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. NT In which case why on earth would you have both? ("Lieu" implies substitution!) Mike. Yes, obviously the presence of gold means it's not substituting for gold. This explains: http://www.resistorguide.com/picture...odes_chart.png NT |
#8
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yellow 5th band R
The 3 first are the value (the last one is the multiplier).
Then, there is the tolerance. And finally it can exist a 5th one, the thermal drift. frank a écrit : 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 |
#9
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yellow 5th band R
On Sunday, December 24, 2017 at 5:56:45 AM UTC-5, frank wrote:
wrote: On Saturday, 23 December 2017 22:16:37 UTC, frank wrote: yellow is used in lieu of gold for tolerance - it's non-metallic. the resistors I'm talking about have both gold (as 4th band) and yellow as 5th band. Too bad there is usually so little difference between yellow and gold as opposed to blue and gold or silver and gold. |
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