[sdiy] Thermosistor for XR-2206 Thomas Henry VCO
derek at umatic.nl
Fri Sep 21 16:52:26 CEST 2007
Here, you mean:
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....
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...
> 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?
>> 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...
>>> derek holzer ::: http://www.umatic.nl :::
>>> ---Oblique Strategy # 147:
>>> "State the problem as clearly as possible"
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>>> Synth-diy at dropmix.xs4all.nl
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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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