[sdiy] expo with no tempco & no heater?

[Harry Bissell Jr]

Yes... but I think it must use the potentiometer\
to set the current. Its a good circuit but not VC
(imho)

H^) harry

--- Paul Perry <pfperry at melbpc.org.au> wrote:
> Exponential converter with no tempco, and no heater?
> 
> http://www.edn.com/article/CA178103.html
> 
> Presume this has been posted before, but I missed
> it..
> I saw it when trying (so far unsuccessfully) to find
> an
> EDN design for a quad op amp circuit that enables
> you
> to match a transistor pair via a scope.
> 
> paul perry Melb Australia
> 
>