[sdiy] My first failure (4069 VCO)!

[Scott Stites]

Hi Charles,
A friend of mine had a similar experience.  Be advised that the transistors
that Rene has in his layout are European transistors, which have the
collector and emitter reversed to American transistors.  If you used 2N39XX
transistors, and didn't reverse them to begin with, that's the problem (it
was for my friend).

Hope that helps,
Cheers,
Scott


----- Original Message -----
From: "Charles Brodeur" <orange_juice_man_returns at yahoo.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Thursday, December 11, 2003 3:36 PM
Subject: [sdiy] My first failure (4069 VCO)!


> Hi all,
>  Today I tired to build the 4069 based VCO, and it did not go well.
> After hours of soldering, I powered it up and got nothing on the
> outputs. I'm going to try to figure out what's wrong, but not today, I
> need a break. Could it be that the capaciters I used are electrolytic?
> I'll post pictures up at a later date, so say tuned. Thanks for
> reading!
>
> -Charles
>
> __________________________________
> Do you Yahoo!?
> New Yahoo! Photos - easier uploading and sharing.
> http://photos.yahoo.com/
>