I don't think it is a 5 band. Magnified it as I thought there was a band on the far right and it is a shadow? Org, Org, then a wider band with a black blowout spot, then Gold? Maybe a better pic without the glare?

It is 5 band resistor it is tiny so is hard to take clearer picture. and the 3rd band is gold as well.
Now you can see it clearly that the middle one is gold?

 

Hello,

It could be like this color code, but the last green ring would not fit:



Bertus

 

1,org=3 2,org=3 3,gold=no value 4,gold=x0.1 5,grn=0.5%

Or: The 3rd band isn't Gold...

Could you provide a reference to some place that says that a gold band equates to no value and can be ignored entirely? Why would it even be there at all? Why would 0.5% resistors be used in an application like that?

 

Hello,

It could be like this color code, but the last green ring would not fit:

View attachment 210955

Bertus

I found numerous sites that indicate that when green is used for the temperature coefficient it is 20 ppm/K -- and numerous charts that omit it.

https://sites.google.com/site/d1000electronics/miscellaneous/resistor-color-codes

Having orange be 15 ppm always seemed out of place. I'd like to know the history of that. I'm guessing things evolved incrementally, probably with 200, 100, and 50 first. Did 15 come after that (probably for some big government contract)? Then they added the others later to do what they should have done in the first place? Who knows? That's probably lost to time.

 

Could you provide a reference to some place that says that a gold band equates to no value and can be ignored entirely? Why would it even be there at all? Why would 0.5% resistors be used in an application like that?

Look at this one. Can we assume from this chart that 3rd gold band has no value? than why would they add 3rd band.

http://www.resistorguide.com/standards-and-codes/resistor-color-code/resistor_color_codes_chart/

 

Look at this one. Can we assume from this chart that 3rd gold band has no value? than why would they add 3rd band.

http://www.resistorguide.com/standards-and-codes/resistor-color-code/resistor_color_codes_chart/
View attachment 210969

Nope. As it states (per that particular chart), the third band exists only for 5 and 6 band resistors -- but it DOES exist for 5 and 6 band resistors (again, per that particular chart). That they put that note in the gold-silver-none rows is just a convenient place to put it. What if the second band were gold? Would you ignore it? Why or why not?

Most charts assume that any resistor with more than four bands has three value bands. But there is zero point in having three value bands for a resistor with a 5% tolerance -- it's barely justified having two! Think about it -- a 470 Ω resistor can have a value any where from 447 Ω to 493 Ω; so even the second band has a huge uncertainty in it and the third band is meaningless. A 5% resistor with five bands is a four-band resistor with an additional band for some other piece of information (usually the tempco).

 

Not sure why this is so hard. It is orange orange gold - 3.3 ohms
gold - 5% tolerance
green - tempco or reliability code.

 

Not sure why this is so hard. It is orange orange gold - 3.3 ohms
gold - 5% tolerance
green - tempco or reliability code.

As noted much earlier: https://forum.allaboutcircuits.com/threads/resistor-value.170963/post-1526652

What makes it hard is that the overwhelming majority of charts do not recognize that a five band resistor might only have two value bands. In fact, I haven't found one since this thread started and I don't recall whether I've ever actually seen one ever. Making matters worse, many charts that mention tempo bands do not recognize that green is a valid band.

It's a mess because there is no single coherent standard that resistor color codes adhere to (and let's not even start on capacitors!).

So you have to try several different possible interpretations and hope that the resistor is at least one of the standard values for the series corresponding to the presumed tolerance level.

For instance, what would the color bands be on a

33.2 Ω, 0.5% resistor? (orange-orange-red-gold-green)

3.3 kΩ, 5%, 20 ppm/K? (orange-orange-red-gold-green)

 

Nope. As it states (per that particular chart), the third band exists only for 5 and 6 band resistors -- but it DOES exist for 5 and 6 band resistors (again, per that particular chart). That they put that note in the gold-silver-none rows is just a convenient place to put it. What if the second band were gold? Would you ignore it? Why or why not?

Most charts assume that any resistor with more than four bands has three value bands. But there is zero point in having three value bands for a resistor with a 5% tolerance -- it's barely justified having two! Think about it -- a 470 Ω resistor can have a value any where from 447 Ω to 493 Ω; so even the second band has a huge uncertainty in it and the third band is meaningless. A 5% resistor with five bands is a four-band resistor with an additional band for some other piece of information (usually the tempco).

I also agree with this point since the only possibility is the additional information with an extra band.
Well in the mean time i replaced R3 with 3.3Ω5% resistor and R2 with 10Ω5% resistor. unfortunately could not measure the basic quantities as i am uable to find a spare for my faulty DMM due to Pandemic. Now hopefully it will charge the battery.

 

I also agree with this point since the only possibility is the additional information with an extra band.
Well in the mean time i replaced R3 with 3.3Ω5% resistor and R2 with 10Ω5% resistor. unfortunately could not measure the basic quantities as i am uable to find a spare for my faulty DMM due to Pandemic. Now hopefully it will charge the battery.

R2, or RBQ?

R2 is a 0.24 Ω, 5% resistor (red-yellow-silver-gold-green). It also looks like it is perhaps 1/2 W.
RBQ is a 100 Ω, 5% resistor (brown-black-brown-gold-green).