[sdiy] Carbon composition... vs carbon film resistors.. original question..

[Jean-Pierre Desrochers]

The actual going on this post is going very far from
where the original question was...
Here again my original post question:

Reading the following info about resistor types :
http://www.electronics-tutorials.ws/resistor/res_1.html

Can I conclude that 5% -> carbon film <- type resistors like these :
http://www.yageo.com/documents/recent/Leaded-R_CFR_2011.pdf

will show the same audio circuit behaviours as the following 5% -> 
carbon composition <- type :
http://www.seielect.com/catalog/SEI-RC.pdf

I already used the Yageo 5% resistors with Ok results
where noise was not a big issue.. but I like very much the look of the
Stackpole's

Any differences between both types or they are the same overall..??

JP

-----------------------------------------------------------------------------------

Le 2013-02-12 13:04, Barry Klein a écrit :
> Check this thread:
> 
> http://www.geotech1.com/forums/showthread.php?20169-Need-advice-on-Minelab-11-quot-coil-repair-and-design
> The resistor I am talking about is shown in comparison to the
> original in-circuit one.
> I suspect metal film.  No capacitance involved unless it's in the 
> meter :-)
> It is interesting to learn as - in the first place I did not expect
> to see a damping resistor on an RX coil - then it skews the 
> inductance
> measurement of the coil and thus if you try and copy an existing
> design you need to know whether there is a resistor there or not.
> Too many hobbies already BTW.  I need to remain clueless with the 
> ones I have.
>
> Barry
>
>
> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl
> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Paul
> Schreiber
> Sent: Monday, February 11, 2013 10:37 PM
> To: 'synth-diy'
> Subject: Re: [sdiy] Carbon composition... vs carbon film resistors..
>
>> LC102 for inductance and got 233uH
>
> According to the "math", that inductance would have to be in series
> or parallel with *at least* 0.28uf just to have an effect at 20KHz.
>
> If your pc boards have 0.28uf of stay capacitance, get another hobby 
> :)
>
> Paul S.
>
>
>
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