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Resistor Value Question
#44672 05/04/04 02:40 AM
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I have a resistor in a Merak center channel that I'm modding. The resistor is a white long-house shaped thing with the following printed on its top: "7W5R"

Anyone make any sense of the resistor's value from 7W5R ?


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Re: Resistor Value Question
#44673 05/04/04 02:51 AM
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There no bands on it?

http://itll.colorado.edu/ITLL/index.cfm?fuseaction=ResistorChart for the colour code (or "Bad Boys Rape Our Young Girls But Violet Goes Willingly" - yes, honestly the way we were taught to remember it!)

Bren R.

Re: Resistor Value Question
#44674 05/04/04 03:01 AM
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No bands. I have a digital picture, but no host, so no way to post it.


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Re: Resistor Value Question
#44675 05/04/04 03:10 AM
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http://www.photobucket.com/

free hosting, real easy.

bigjohn


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Re: Resistor Value Question
#44676 05/04/04 03:17 AM
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Thank you BigJohn



The white thingie is the resistor


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Re: Resistor Value Question
#44677 05/04/04 03:25 AM
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no problem..

hope you can do something with that bren.

its all just wood and wires to me!!

bigjohn


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Re: Resistor Value Question
#44678 05/04/04 04:41 AM
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Hmm.. maybe would help to see a better pic (of the whole circuit) if possible... it looks like it's glued in, but...

It looks like (hard to tell from the pic) you have a sand block resistor there - used to find them a lot in CB radios. The marking is confusing though, they'll usually be marked, say... 5W50(omega)±5% - 5 Watt, 50 Ohm give or take 5%.

Maybe if I could see the whole circuit... looks like there's an electrolytic cap behind it... other than that - it might as well be lego.

Worst case scenario... take it out of the circuit and measure it with a multimeter.

Bren R.

Re: Resistor Value Question
#44679 05/04/04 05:07 AM
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7W5R eh...

could be 7 watt resistor, 5 ohm.

Usually they have the color bands as mentioned above, or in the case of ceramics they have a number. Id have to go look at some of my notes to decode the ceramic type but color bands are easy, there are a bunch of online calculators. As BrenR suggested, if you have a DMM just set it to resistance and measure it, you can just clip the leads onto it without un soldering it, but probbly wont get an accurate reading.

Re: Resistor Value Question
#44680 05/04/04 05:14 AM
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See post here.


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Re: Resistor Value Question
#44681 05/04/04 05:24 AM
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Nice find chess

I forgot, when i said that the ceramic ones had a numerical code i was talking about small ceramic CAPACITORS... DOH! (yes, its been a while) I better get my stuff straight cos' im gonna be starting my AAS in electronics technoloy starting this fall.

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