47uF and 150uF seem like large values compared to the existing 2.2uF.
Do those values seem correct

Also, is the cap's positive axis located close to the LED, or close to
the edge of the pcb

Thanks!

--- In Doepfer_a100@yahoogroups.com , <hardware@...> wrote:
>
> Indeed we did not add this information to the DIY page because
nobody was
> asking. You are the first one.
>
> For the A-143-1 the corresponding capacitor is "C1" (standard value
2.2uF)
> and is located behind the LED that displays the envelope.
>
> Best wishes
> Dieter Doepfer
>
>
> > This looks like a fantastic mod.
> > Forgive my n00b questions here:
> >
> > 1. Is the switch a DPDT ON - OFF - ON (I assume it doesnt matter if
> > its a make-before-break or not)
> > 2. When you say "short across the caps", are you referring to adding
> > capacitors in parallel to the existing timing cap
> > 3. Is the electrolytic the timing cap
> >
> > I checked the DIY page but did not find this mod there.
> >
> > Thanks!
> >
> > --- In Doepfer_a100@yahoogroups.com , "Dieter Doepfer" <hardware@>
> > wrote:
> > >
> > > Peter,
> > >
> > > thank's for this idea. We could add the capacitor positions of all
> > > corresponding modules (envelope generators, LFOs ...) to our DIY
page if
> > > there are sufficient inquiries.
> > >
> > > Best wishes
> > > Dieter Doepfer
> > >
> > > > -----Ursprüngliche Nachricht-----
> > > > Von: Doepfer_a100@yahoogroups.com
> > > > [mailto: Doepfer_a100@yahoogroups.com ]Im Auftrag von (i think
you can
> > > > figure that out)
> > > > Gesendet: Dienstag, 27. Juni 2006 18:23
> > > > An: Doepfer_a100@yahoogroups.com
> > > > Betreff: 1 A-143-1 Timebase modification: Fast, easy.
> > > >
> > > >
> > > > Yo.
> > > >
> > > > Bringing my head above ground here for a second to give you the
> > > > scoop on a very easy, yet effective modification to the Quad A/R
> > > > Gen, the A-143-1.
> > > >
> > > > As you know, I like long envelopes. Adding a ON-OFF-ON switch
> > > > which will short in two additional caps across the 143-1's
> > > > 'money' (timing) cap will get you there if you want by adding the
> > > > very same range switch function inherent on the Doepfer ADSR.
> > > >
> > > > I've uploaded a diagram into the photos section of this
> > > > yahoogroup (pardon the snap - it was done on my cell phone).
> > > > It's entotled A143-1mod.jpg. It shows the mod itself (easy) and
> > > > where I opted to locate the switches, which nestled in neatly in
> > > > the blank area above the Voltage Output jacks of EG's 2, 3 and 4.
> > > > In that there wasn't an easy way to integrate the switch into the
> > > > first EG, I left that one alone.
> > > >
> > > > Using an ON-OFF-On switch allows you to to take the additional
> > > > caps out of the circuit altogether if you care to (switch
resting in
> > > > the center position).
> > > >
> > > > BTW - this mod can be added to any EG. All you have to do is
> > > > find the timing cap and short additional caps over it. In this
> > > > specific mod, I used a 47uf on one side of the switch and a
> > > > 150uf on the other. So, long and loooooong.
> > > >
> > > > enjoy (or not!)
> > > >
> > > > - P
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> >
>