Coincidentally, I have the exact same problem with a Bintic I built
yesterday! I replaced the 4391 (worked many times before) and the 394
to no avail. Tonight I'll continue exploring. On my walk to my day job
today I was obsessing about it (surprise!) and I've turned my eye on
the sync section. I'll let you know how I get on.
Cheers,
Scott Deyo
The Bridechamber
contact@...
www.bridechamber.com
yesterday! I replaced the 4391 (worked many times before) and the 394
to no avail. Tonight I'll continue exploring. On my walk to my day job
today I was obsessing about it (surprise!) and I've turned my eye on
the sync section. I'll let you know how I get on.
Cheers,
Scott Deyo
The Bridechamber
contact@...
www.bridechamber.com
On Apr 3, 2007, at 3:19 PM, casperelectronics wrote:
> Hey scott,
> Here are all of the part substitutions. I think these should all work
> no prob.
> LF356 > TL071s,
> LM394>ssm2010 (Ray Wilson lists this as a good replacement for the
> LM394)
> 1Ktempco>standard 1K resistor
> 1N4148>1N914
> input "beads">10ohm resistors
> I used a 2N4091 for my FET (which is what he says he uses in the
> circuit description).
> I checked all of the polarities, jumpers and other connections...no
> prob. Before I wrote I noticed that my diode was in backwards. I was
> excited thinking
> that this must be the source of the problem,,,, I flipped it around
> and their was absolutely no noticeable change in performance :(
> How do you switch between filter and osc. when this is working
> correctly?
> -pete
>
> On Apr 3, 2007, at 9:14 AM, <contact@...>
> <contact@...> wrote:
>
> > Any component substitutions?
> > 99% of the time it's a polarity, wiring or trace problem, at least
> > with me :)
> >
> > Cheers,
> > Scott
> >
> > ----- Original Message -----
> > From: casperelectronics
> > To: cgs_synth@yahoogroups.com
> > Sent: Tuesday, April 03, 2007 12:54 AM
> > Subject: [cgs_synth] bi-n-tic filter...help!
> >
> > I just finished building the bi-n-tic filter and I don't seem to be
> > getting any osc. output. The filter works great, bandwidth and
> damper
> > do what they are supposed to do but the frequency controls don't do
> > anything. Anyone have much experience with this circuit?
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
>
>
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