[sdiy] Tempco resistor position?

[Gene Stopp]

I've seen op-amp oscillation when the tempco is in the feedback loop
(probably something to do with inductance and op-amp choice). Because of
that I chose the resistor divider approach with the ASM-1.

- Gene
 

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Samppa
Tolvanen
Sent: Tuesday, June 19, 2007 11:07 AM
To: synth-diy
Subject: [sdiy] Tempco resistor position?

Hi.

I've seen 2 variations of the scheme in the basic sawtooth oscillators
(both probably from EN).

Is there any notable difference between putting tempco in the CV
buffer OPAMP feedback loop or as tempco being a voltage divider to
ground before expo converter?

Samppa
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