And my Bintic's culprit was pin 1 of the 4024 bent under the socket,
which of course I didn't notice before basically destroying the PCB
replacing parts -- "It's almost never the part's fault," I think I
said... :)
Cheers,
Scott Deyo
The Bridechamber
contact@...
www.bridechamber.com
which of course I didn't notice before basically destroying the PCB
replacing parts -- "It's almost never the part's fault," I think I
said... :)
Cheers,
Scott Deyo
The Bridechamber
contact@...
www.bridechamber.com
On Apr 7, 2007, at 3:03 PM, vtl5c3 wrote:
> I posted a couple of quick and dirty examples of my Bi-N-Tic module
> under:
>
> http://web.pdx.edu/~rfahl/Audio/
>
> bi_n_ticked_off.mp3 is a simple sequenced ditty, square wave of an
> Electronotes Option 3 VCO into the BNT's audio input, another analog
> sequencer driving one CV input of the BNT's VCO and a triangle LFO
> driving another CV input.
>
> bi_n_ticked_off2.mp3 starts with only the 4 divider outputs being fed
> into the audio in, then the EN Opt. 3 VCO ditty is faded into the
> other audio input. Only CV into the BNT VCO is the same tri LFO as
> above.
>
> --- In cgs_synth@yahoogroups.com, "vtl5c3" <romeo.fahl@...> wrote:
> >
> > Thanks to the recent thread I decided to revisit my non-working
> > Bi-N-Tic filter. I'd used a BF245A or B for the VCO FET. Not a good
> > substitute - don't bother trying it. I found a PN4091 in my stash,
> > soldered it in and the VCO started working right away.
> >
> > The next problem was the diode that goes to the BC547. I have the
> > Rev.1.1 board and didn't know about the error on PCB until I
> happened
> > to re-read the fine print on the CGS site this morning. Putting the
> > diode in correctly and fixing a blown trace got the module
> working...
> >
> > One modification that I made is that I took four of the 4024 outputs
> > and summed them into a CGS04 mixer, which I piggy-backed onto the
> main
> > board. That output is then fed into the second audio input, adding
> > some nice "prickly" pulses if I turn up the gain.
> >
> > It's quite an ornery beast. The patch I came up with this morning
> made
> > me think of nails being thrown into a jet engine. I'll try and
> record
> > a sample later on.
> >
>
>
>
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