diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Tubes / Valves (http://www.diyaudio.com/forums/tubes-valves/)
-   -   what kind of resistor is this? (http://www.diyaudio.com/forums/tubes-valves/95566-what-kind-resistor.html)

pchw 2nd February 2007 10:06 PM

what kind of resistor is this?
 
2 Attachment(s)
I got some of these 10K 1% resistors, but I never saw anything like that. It has a hole in the middle. I wonder what is the power rating and type (carbon, metal, ceramic etc)? Can someone identify it?

Thanks,

Wavebourn 2nd February 2007 10:11 PM

Re: what kind of resistor is this?
 
Quote:

Originally posted by pchw
I got some of these 10K 1% resistors, but I never saw anything like that. It has a hole in the middle. I wonder what is the power rating and type (carbon, metal, ceramic etc)? Can someone identify it?

Thanks,

I would cannibalize one to see what is inside, you are happy if a metal foil or wire.

frank754 2nd February 2007 10:15 PM

I just ordered a few that look similar, mine are Caddock high-power, low tolerance "film resistors", they generally are in the low resistance range, but can go up to 100k or so, and are a premium price, like $3-4 each sometimes.
They sort of look like flat transistors but a bit larger, and are fairly high precision, some have flat PCB type leads (or socket leads).

pchw 2nd February 2007 10:31 PM

Yeah, they do have a look of transistor.
The markings are 10K ohm (the symbol) 1% CE292E. The packaging is kind of like thick plastic or epoxy shell. The diameter is about 20% bigger than a pencil. I google searched CE292E but turned up nothing. Do you think it is safe to use them as 1/2W resistors?

nhuwar 2nd February 2007 10:35 PM

If I were to bet I would say it's a copper coil resistor by it's shape.

Nick

frank754 2nd February 2007 11:01 PM

Yes, that's another thing I neglected to mention, the reason some of these are so large is that they can handle often 15 watts, and some are rated up to 100 watts. I can't tell what yours are from what you say, but the ones I ordered say "MP925 100K 1% R" and are rated at 25 watts, the dimensions are .4" x .6" x 1/10" thick, and cost me about $3.50 each, so big performance in a small package.

cliffforrest 2nd February 2007 11:10 PM

Come on guys!

It is a wirewound ( probably manganine) precision resistor.

Designed for stability, not high power or any other audio freakiness!

I have LOTS of similar.

jlsem 2nd February 2007 11:17 PM

Quote:

It is a wirewound ( probably manganine) precision resistor.
Probably a 1/4 to 1/3 watt and no more than 300v. Looks like RB53 size.

John

frank754 2nd February 2007 11:21 PM

The ones I got were from Allied, as I had a hard time finding a certain spec I needed, and these are 25 watts. precison, are are that small:

http://viewoftheblue.com/misc/prec_res.jpg

I was just guessing on his.

pchw 2nd February 2007 11:38 PM

2 Attachment(s)
I wish they were the same type, Frank ;)
Here is another picture, Cliff, do they look like manganine?
If they are only 1/3W at most, then they are probably not much of any use, what a bummer.


All times are GMT. The time now is 12:23 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2