Temp-Co resistors

[Joachim Verghese]

On Sun, 31 Dec 1995, A Robins wrote:

> I am currently working on a new modular system, based on ARP circuits, and 
> every exponential converter requires a temp-co resistor 1.87k 3400 PPM.
>    The last time I used one of these was about 15 years ago when I built the 
> Trancendant 2000 E.T.I. synth, the problem is... where do I find one in the
> U.K. as all the stores like Maplin etc. don't stock them.

I used to put two 1K tempco resistors in series, available from Farnell
Electronic Components, order number 143-584. For new designs you could
use one 1K tempco and lower the value of the other divider resistor to
achieve the desired 18 mV/oct scaling.

-joachim