Doepfer

The new version of the A-151 (thank's to Peter Grenader for this suggestion)
is able to limit the number of steps to 2, 3 or 4. For the old version a
modification is possible but need some DIY experience (drilling a hole for
the additional switch, soldering some diodes ...). As far as I remember
Peter described the required modifications in a message a few months ago.
The outputs X2 and X3 (pins 15 and 11) of the CD4052 have to be connected to
the terminals of a 3-position switch. The center terminal of the switch has
to be connected to the reset input via a standard diode(e.g. 1N4148). The
diode is used to "OR" the internal reset to the external reset input.

Best wishes
Dieter Doepfer



> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von trebcavxx
> Gesendet: Freitag, 15. April 2005 20:56
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] Doepfer A151
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> I've got a question about the Doepher A151 Sequential switch. Using the
> switch in the fashion of inputting 3 CV feeds in, and taking an output
> from the I/O socket, I'd need to input a reset signal into the reset
> socket to cancel the 4th switching on each pass. Does anyone know where
> I'd get the pulse from to do this ?
> I'm feeding in three CVs from three Analogue Sol sequencers into 1,2
> and 3, then taking the output from the I/O socket to my quantiser, and
> then on to the CV input of a VCO. The switching pulse for the A151 is
> coming from the 1:8 output of my master clock. The 1:1 output goes to
> the three sequencer's CLOCK inputs, (and also to the TRIG of an
> envelope generater), giving me the full 8 channels on a sequencer,
> which then switches to the next sequencer and so on, so we have in
> effect one 24 channel sequencer, but the resetting of the A151 is
> giving me a problem.
> Can anyone help please ?
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> Yahoo! Groups Links
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