Tempcos

[John Speth]

At 06:49 PM 2/6/97 +0000, you wrote:
>Hi,
>
>I'm not sure if this is any use, but I have a Powertran Transcendent 2000
>synth which uses a network of 2 resistors in series in place of a Q81 in
>the VCO. I quote from the construction notes:
>
>...it just so happens that copper has a TC of +3900ppm/C. Therefore a 870R
>copper wirewound resistor in series with a 130R metal oxide resistor looks
>like a 1k resistor with a +3400ppm/C TC.
>

This sounds like an elgantly simple solution to any tempco problem; Roll
your own!!!  Can any of you physics techies confirm the validity of this
solution?  I suppose the only real challenge then is finding copper
wirewound resistors.

John Speth (johns at oei.com)
Object Engineering, Inc.
Vancouver, WA