[sdiy] Thermosistor for XR-2206 Thomas Henry VCO

gino wong wonggster at gmail.com
Fri Sep 21 20:03:57 CEST 2007


Precision resistor has 1k 3500 pt146 tempcos on sale for $3.10 each at
their site. Other packages as well.

Bridechamber has them too for few cents more and a LOT less postage

gw



On 9/21/07, Derek Holzer <derek at umatic.nl> wrote:
> Here, you mean:
>
> http://www.magsmoke.com/tempco-resistors.asp
>
> The package might be small enough that the customs people won't bother
> with it. Otherwise, it's a half-day trip to the Berlin customs house and
> back for me....
>
> d.
>
> Christian From wrote:
> > 2K +3500ppm/C tempco's can be had from magicsmoke.com for...not a lot
> > of money - can't remember how much...
> >
> > Christian
> >
> > On 9/21/07, Matthias.Herrmann at jeppesen.com
> > <Matthias.Herrmann at jeppesen.com> wrote:
> >> synth-diy-bounces at dropmix.xs4all.nl wrote on 09/21/2007 02:33:47 PM:
> >>> The board for the Thomas Henry XR-2206 VCO that Tom Bugs made calls for
> >>> a 2K +3500ppm/C thermosistor. Where do people (in EU?) source these
> >>> things? How bad would the drift be if I used a normal 2K resistor?
> >>>
> >>> best,
> >>> d.
> >> since the 2k is placed in the feedbackpath of a inverting amplifier it
> >> should should be possible to use 1k and divide the value of the input
> >> resistor (100k) by 2 (=49.9k) to keep the ratio...
> >>
> >> cheers,
> >> matthias
> >> ___
> >> www.modular.fonik.de
> >>
> >>> --
> >>> derek holzer ::: http://www.umatic.nl :::
> >> http://blog.myspace.com/macumbista
> >>> ---Oblique Strategy # 147:
> >>> "State the problem as clearly as possible"
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> --
> derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista
> ---Oblique Strategy # 148:
> "State the problem in words as clearly as possible"
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