Unknown resistor

Would anybody please tell me what the supposed value of this resistor is?

I can't find an online calculator that lets me enter that sequence of colors: brown, grey (silver?), white, red, black!

I removed it from a failed power supply and can't seem to get a stable reading of it with my multimeter. What's the supposed wattage, too? It's at least 3-4x as big as the usual 1/4W ones. If power scales linearly with size I guess that would make 1W ;).

Not a normal resistor. But looks like about a 0.29 ohm. No wonder your vom has problem measuring it.

It's a .29 ohm 1% resistor more like 1/2 watt.

5 band resistor color code doesn't have a black at the end.

What make you guys say .29ohms?

Does it measure basically 0?

Any chance it's not a resistor?
Looks a little like an inductor.

And, not being charred, unlikely it's an open low value resistor.

If it's a resistor it could be 0.39ohm

black, orange, white (039), silver (x 0.01), brown (1%).
Leo..

@Wawa,
The OP said
"I can't find an online calculator that lets me enter that sequence of colors: brown, grey (silver?), white, red, black!"
I suspect he was reading from the opposite end.
So, no "orange" in there. I sometime have trouble distinguishing colors also.

How do you know which end to start reading?

Most resistors are pretty easy to tell which end to start reading. This one is an exception. If you bought them, you should have an idea what range they are. If you can read them with an ohm meter you could then tell which end to start reading from. If in doubt: throw them out.
Do you have a need for a 1/3 ohm resistor? Probably not. We are still not even sure that this is a resistor.

Was this out of an antique electronic device? 30 - 40 years old?

Looks like orange to me on the picture from post#0.
29 is not used in colour code, 39 is.

Google "5-band code".
Leo..

LOL, actually I would like to repair this power supply, it's from my PC speakers! I didn't know this resistor had such a small value, so it's probably fine. It was somewhere between the input capacitor and the MOSFET. I'll put it back, the fault must be somewhere else.

Thanks for the help!

PS: It's definitely red!

Is there a schematic online for your power supply?

Speaking of resistors, have you seen this project of mine?

I like it. I am a clock freak.

It is most likely a 29 uH inductor.

It's black red white silver brown its a resistor it can't be read any way but like that because the last color can only be brown red gold or silver and its a .29 ohm 1 % resistor i can't tell from the picture how big it is but i would say 1/2 watt.
Most inductors are green and the bands or not spaced like that I've seen one blue one but the color is a off blue
like a blue green.

The color on it any way you read them don't read as a inductor.

Hi,
When you try and measure it, are you using a DMM in Autorange and the reading bounces around?
Try reading it in fixed range mode, if its stable then I'd say its a inductor, especially if you get a low reading.
The range changes of the DMM produce current changes that cause back emf to upset the AtoD in the meter.

I've had a couple of inductors do it, not all..

Tom.... :slight_smile: