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Old 6th September 2009, 05:11 PM   #1
Electrons are yellow and more is better!
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Default Obscure resistor, what is it?

http://img3.imageshack.us/img3/3896/motstndn.jpg

What is this, the big resistor?
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Old 6th September 2009, 05:16 PM   #2
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That looks like a 1/2W carbon composition resistor.
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Old 6th September 2009, 05:46 PM   #3
SA-12 is offline SA-12  Canada
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if I was to guess it is a 6.8 ohm 1 or 2 watt carbon composition (or film) resistor 5% and it looks like it is cracked so I bet it is open.

does the resistor have smooth rounded edges or is it built like a perfect tube with sharp edges.

Last edited by SA-12; 6th September 2009 at 05:50 PM.
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Old 6th September 2009, 05:48 PM   #4
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looks like a television chassis
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Old 6th September 2009, 06:42 PM   #5
Electrons are yellow and more is better!
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I'm a bit puzzled by the rings: Blue, Silver, Gold, Black, Brown.
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Old 6th September 2009, 06:56 PM   #6
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Or it is Brown, Black, Gold Silver Blue

which is 10 x 0.1 5% = 1R 5%, but I dont know what Blue is!

http://www.hobby-hour.com/electronic...color_code.php

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Old 6th September 2009, 07:39 PM   #7
Electrons are yellow and more is better!
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I think I have the answer. It's a fusible resistor

1.0 ohms, 10%, fusing characteristics 12 times

http://www.hkresistors.com/PDF/A7.pdf
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Old 16th September 2009, 03:28 PM   #8
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That just looks like a 1W or 2W Allen-Bradley resistor. AB resistors have that brown cylindrical body.

Here are some examples:

Click the image to open in full size.
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Old 16th September 2009, 04:00 PM   #9
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blue silver for the first two digits does not make sense.
It appears to be brown (1) black (0) gold ( *0.1) silver (10%).
I cannot explain the blue banding. temp coef (unlikely) fusible (don't know).
I would guess a carbon composition 1r0+-10% 1W
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Old 16th September 2009, 04:02 PM   #10
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Quote:
Originally Posted by SA-12 View Post
if I was to guess it is a 6.8 ohm 1 or 2 watt carbon composition (or film) resistor 5% and it looks like it is cracked so I bet it is open.[snip].
Correct. I have exactly the same one in my hands right now.

jd
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