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Re: a bit off topic; help again, please

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6/1/2000 6:05 AM

Re: a bit off topic; help again, please

JC:

Here's a quick rundown:

carbon comps: usually a very tubular body with square ends. Typically brown in color. Found in most BF amps and at least the early SF's.

carbon film: more of a "bulbous" shape, usually tan in color. (Take a look at Radio Shack for these) Usually in 5% or 10% tolerances.

metal film: usually blue in color, and usually very "tubular". Some people say to look for a shiny blue. Usually in 2% or 1% tolerances. AKA "flameproof" (although other types will not catch fire either)

metal comp: More rounded than the metal films but usually with a matte blue finish. Also flameproof.

ceramic(?): I believe you are referring to the rectangular resistors typically found in 5, 10 or 25 wattages. (I always called these "bathtub" resistors but some people call them "cement" resistors).

wire wound: They might be encapsulated in something so that you won't see the wire (unless you crack them open, but most parts clerks frown on that).

--Hope this helps a bit!

Steve Ahola

6/2/2000 12:09 AM
JC	Shure it helped, Steve, as usual. About what I called ceramic, I saw, appart those cement blocks, "vintage" resistors usually wounded on ceramic (porcelain actually) tubular bases. And others (wounded too, I guess) "encapsulated" or covered into a porcelain cover. Maybe they should just be included into the "wound" group, I guess. Thak you for you answer, it relly helped. JC

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