[sdiy] tempco resistors

[Ray Wilson]

Precision Resistor PT146 2Ks are 1% TCRs.

Here is the blurb on the 1K version of this part from the Precision Resistor 
Website. The compensation factor is the same in this 2K part but the value 
is 2K so that 100K input resistors can be used in the voltage summer section 
of a linear to log convertor.

PRC Fact:


    TheTCR Tolerance on the 1K Compensators is +3500 ppm/°C.
    Meaning, if you are looking for a systems offset of
    +3350 ppm/°C. to +3450 ppm/°C, we are confident you
    can achieve dramatic results with our standard off-the-shelf
    compensators. The actual TCR of a standard 3500 element
    is very close to +3350 ppm/°C. at 25°C. and lower than
    +3450 ppm/°C. at 100°C.
http://www.musicfromouterspace.com/catalog.php?page=CATALOG (bottom of the 
page)http://www.musicfromouterspace.com/analogsynth/precisionresistor.html
Ray
----- Original Message ----- 
From: <jean-pierre.desrochers at ville.quebec.qc.ca>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Friday, July 06, 2007 6:25 AM
Subject: RE: [sdiy] tempco resistors


>
> Am I wrong or all these TYCO resistors have 5% tolerance....?
> Not quite precises.
> JP
>
> -----Message d'origine-----
> De : JH. [mailto:jhaible at debitel.net]
> Envoyé : 5 juillet 2007 20:51
> À : Fernando de Izuzquiza
> Cc : Synth-Diy electronics
> Objet : Re: [sdiy] tempco resistors
>
>
> Thank you!
>
>>There's also this ones (reported to work, very cheap):
>>
> http://uk.farnell.com/jsp/search/productdetail.jsp?sku=732291
>>
>
> Is there a catch?
>
> JH.
>
>
> ----- Original Message ----- 
> From: "Fernando de Izuzquiza" <listas at fdi.jazztel.es>
> To: "JH." <jhaible at debitel.net>
> Cc: "Synth-Diy electronics" <synth-diy at dropmix.xs4all.nl>
> Sent: Thursday, July 05, 2007 9:19 PM
> Subject: Re: [sdiy] tempco resistors
>
>
> I've bought from Laurie (ELBY Designs, AU, my favorite =:) and Tony
> (Oakley, UK)
>
> http://www.elby-designs.com/shopping/enter.html?lmd=39265.892037
>
> http://www.oakleysound.com/parts.htm
>
>
> James Patchell and Ray Wilson also have tempcos:
>
> http://www.oldcrows.net/~patchell/parts/parts.html
>
> http://www.musicfromouterspace.com/catalog.php?page=CATALOG
>
>
> There's also this ones (reported to work, very cheap):
>
> http://uk.farnell.com/jsp/search/productdetail.jsp?sku=732291
>
> http://uk.farnell.com/jsp/search/productdetail.jsp?sku=732278
>
>
> Fernando
>
>
>
> El 03/07/2007, a las 21:01, JH. escribió:
>
>> What's your favorite place to buy tempco resistors?
>>
>> (I know it's been a topic before, several times, but I mostly read
>> over it
>> because I still have enought tempco resistors for myself. But now that
>> people are ordering my redesigned version of the Tau Phaser, they keep
>> asking me where to buy them ...)
>>
>> JH.
>
>
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