# Help with resistor code - Embarrassing :\$

I can't work out these resistor codes, they are 5 band and I'm rubbish with the multi meter. Could someone tell me what these 2 resistors are and how to read them? I know one of them is similar to 10k but not sure its exact. I bought them as a bag of random types from Maplins so that didn't help.

Here is a start Electronics Technician: Resistor Color Code

You have on the left 2700 ohms or 2K7
On the right you have 330 ohms or 330R

Both are 1% tolerance

You really should get a digital multimeter. Then you could measure the actual resistance of your resistors. No one playing with electronics should be without such a meter, they are not costly and are essential for building anything using electronic components.

Lefty

I know one of them is similar to 10k but not sure its exact.

How do you know this? I think you are reading it backwards.

The band with the slightly larger gap is the tolerance band at the end.
Start from the other end and read the colours
Red (2) , Violet (7) , Black (0), Brown (1) gap Brown (1)
first digit, second digit, third digit, number of zeros - this is the value in ohms
The one at the end is the tolerance in %

Thanks for all that, I only knew it was or said I knew it was 10k as I was following a tutorial that asked for a 10k tutorial and I kept trying until I found one that worked so thats why I said that.

I bought a multi-meter but I'm not 100% how to use it I'll post a picture up tomorrow.

Something else to keep in mind: I've seen inductors that look like resistors (yes, there is an inductor color code as well). In this case, the inductors were cylindrical. Most resistors are "barbell" shaped - but some (generally older ones) are cylindrical, too.

If you have a smartphone, you might want to look and see if there is an application for resistor color codes; I don't know about the iPhone, but for my G1 (Android), I purchased this app called "Resistor ID Pro" - another I like that was free is called "Electronica".

Knowing the resistor color code is useful (The mnemonic I learned a long time ago - Bad Boys R...I won't go there), but having an app helps at times; the thing I like about the Electronica app is that is has more than just a color code calculator - it also has tools for capacitors, figuring out LED resistances, charts, cable pinouts, and a whole lot of other useful bits.

I've actually found my G1 to be indispensible when I go to my favorite "haunt" - Apache Reclamation and Electronics. If I pick up a part or see a board that looks like it has an interesting component, I can just hit the browser, go to google, and do a search for a datasheet - if I find one, I can then know what it is, what it's going rate is (on the surplus market - so I know if I get a fair deal at the counter at ARE) - or if I come up with nothing (or a bunch of links to the weird "scam" sites for electronic components you see - if you've ever searched for a datasheet, you know what I mean) - then I can just leave it alone, and move on. Saves some time and money.

A meter is absolutely essential, though.

I have an android, I'll download that now and check it out.

Chems:
I have an android, I'll download that now and check it out.

Note that only the "pro" version of the Resistor ID app supports 5 bands, the standard only supports 3 (or 4?) - still, it doesn't cost much to get the pro version (I think it was a \$1.29 for it when I bought it) - well worth the price!