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I'm building the modular of penfold's book
<p><A HREF="http://aupe.phys.andrews.edu/diy_archive/schematics/synths/penfold/penvco.html">http://aupe.phys.andrews.edu/diy_archive/schematics/synths/penfold/penvco.html</A>
<p>"The VCO", he writes, "remains a <b>current</b> rather than a <b>true
voltage controlled</b> type." Sorry for my newbieness, but <b>what's the
difference</b>.
<p>Btw: it didn't work the first few times, but as I touched the pcb with
my fingers by accident, it functioned. I bridged some solder jonts of IC2
(CA3046) ...
<p>... and it worked. Guess which: Pin 3 (emitter of Q1 and Q2, which are
not used anyway) is bridged with 12 (base of Q5) and 13 (emitter of Q5).
<p>Maybe someone can explain this.
<br>
<p>Thanks a lot,
<p>Michael
<br>(Could you please stay in an electronicnewbiespeech?)
<br>
<br>
<p>--
<br>michael schmid // linz // austria</html>