[sdiy] SMT +3500 tempco?

[Steve Lenham]

The ETI/Powertran Transcendent 2000 used a copper wirewound resistor of 
870R (odd value) in series with a low-tempco metal oxide resistor of 
130R to give an overall 1K resistance with the right tempco.

Steve L.

On 03/10/2011 13:48, Harry Bissell wrote:
> you'd need some pretty fine wire to roll your own and have it smaller than a breadbox...
>
> (to achieve 2K resistance you need a LOT of wire)
>
> not to mention the inductance you would get as a side effect (unless you use a special winding technique)
>
> H^) harry
>
> ----- Original Message -----
> From: Paul Perry<pfperry at melbpc.org.au>
> To: synthdiy diy<synth-diy at dropmix.xs4all.nl>
> Sent: Fri, 30 Sep 2011 22:18:55 -0400 (EDT)
> Subject: Re: [sdiy] SMT +3500 tempco?
>
> For anyone who wants to roll their own tempco, pure copper has a coefficient
> of around +3930 ppm.
>
> paul perry Melbourne Australia
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>