The PHILCO Phorum

I got a big load of resistors from someone but the issue is they were all jumbled together with no way to tell the wattage. took me 3 hours to separate them. Is there anything that tells you that a resistor is 1/2 watt or 1 watt etc?

thanks for any help
Kirk

Are they old ones or new ones? Something like this could help: http://firetrucksandequipment.tpub.com/T..._217_1.jpg

But it's hard to tell. Each wattage has consistently become physically smaller over the years. Do you have a photo?

Elderly carbon resistors are prone to drift up in ohmage and otherwise may perform oddly whether or not they have ever been used. Can't say I know a good way to test other than an ohm-meter.

As it was mentioned a photo would help because it depends on composition and/or age. When you take the picture include something known to compare size to, like a penny.

You haven't been searching my site. Comparison pics of resistors.

See this: http://philcorepairbench.com/resistcompare.htm

Chuck

Great Chuck,
I have been searching google but came up with nothing on wattage.

http://www.mouser.com/ds/2/303/little_demon-180342.pdf

This is Ohmite datasheet showing similar resistors with sizes.
Might not be exact same but should give you an idea.

The 2 larger ones of the 3 on the left are 1/2w. The rest appear to Be 1/4w

There are new resistors like the one on the right looking like they are 1/4W that are in fact 1W resistors. Just recently used some.
They are of course not carbon type. First time I saw them I did not believe it.