It's good that a lot of modules now have comparators on the inputs that trigger off pretty much any positive voltage. It's a luxury really but worth considering for future Deopfer modules as well.
> To: Doepfer_a100@yahoogroups.com
> From: Doepfer_a100@yahoogroups.com
> Date: Mon, 6 Jul 2015 18:04:34 +0200
> Subject: AW: [Doepfer_a100] The A185-1
>
> Module A-185-1 was designed in 1997 and at this time there were no other (or only a few) other module manufacturers on the market.
> The gate section of the A-185-1 is only a buffer (nothing but a so-called emitter follower) but does not increase the gate voltage.
> Rather the emitter follower lowers the voltage a bit (by about 0.7V). The A-185-1 was designed to be used with A-100 modules only
> and for A-100 modules there was this rule for gate voltages: <1V means low and >3V means high. All A-100 modules that process gate
> signals (especially envelope generators, clock divider, trigger delay and so on) have usually a transistor at the gate input that
> requires about 1.5-2 V to trigger. But I'm aware that things have changed and we will redesign the A-185-1 so that the gate output
> voltage can be set to +5V or +12V (probably by means of a jumper) and that it does no longer work as a buffer.
>
> Best wishes
> Dieter Doepfer
>
>
> > About the A185-1
> >
> > Maybe it's just me using the module the wrong way.
>; >
> > This is the setup:
> >
> > A190-1 Clock Out ---> 1st A185-1 Gate In
> >
> > 1st A185-1 Gate Out ---> 2nd A185-1 Gate In
> >
> > 2nd A185-1 Gate Out ---> Intellijel Metropolis Gate In
> >
> >
> > The Metropolis (and probably other modules too) doesn't trigger well because the gate signal is too weak. I did some measurements.
> >
> > A190-1 Clock Out ------ +4.1V
> > 1st A185-1 Gate Out --- +3.4V
> > 2nd A185-1 Gate Out --- +2.7V
> >
> > Why not keep the gate signal as say +5V?
> >
> > For this purpose I build myself a simple "Gate Amp". Just an idea.
> >
> > Best regards,
> > Karel.
>
>
>
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>
> ------------------------------------
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> ------------------------------------
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> From: Doepfer_a100@yahoogroups.com
> Date: Mon, 6 Jul 2015 18:04:34 +0200
> Subject: AW: [Doepfer_a100] The A185-1
>
> Module A-185-1 was designed in 1997 and at this time there were no other (or only a few) other module manufacturers on the market.
> The gate section of the A-185-1 is only a buffer (nothing but a so-called emitter follower) but does not increase the gate voltage.
> Rather the emitter follower lowers the voltage a bit (by about 0.7V). The A-185-1 was designed to be used with A-100 modules only
> and for A-100 modules there was this rule for gate voltages: <1V means low and >3V means high. All A-100 modules that process gate
> signals (especially envelope generators, clock divider, trigger delay and so on) have usually a transistor at the gate input that
> requires about 1.5-2 V to trigger. But I'm aware that things have changed and we will redesign the A-185-1 so that the gate output
> voltage can be set to +5V or +12V (probably by means of a jumper) and that it does no longer work as a buffer.
>
> Best wishes
> Dieter Doepfer
>
>
> > About the A185-1
> >
> > Maybe it's just me using the module the wrong way.
>; >
> > This is the setup:
> >
> > A190-1 Clock Out ---> 1st A185-1 Gate In
> >
> > 1st A185-1 Gate Out ---> 2nd A185-1 Gate In
> >
> > 2nd A185-1 Gate Out ---> Intellijel Metropolis Gate In
> >
> >
> > The Metropolis (and probably other modules too) doesn't trigger well because the gate signal is too weak. I did some measurements.
> >
> > A190-1 Clock Out ------ +4.1V
> > 1st A185-1 Gate Out --- +3.4V
> > 2nd A185-1 Gate Out --- +2.7V
> >
> > Why not keep the gate signal as say +5V?
> >
> > For this purpose I build myself a simple "Gate Amp". Just an idea.
> >
> > Best regards,
> > Karel.
>
>
>
> ------------------------------------
>
> ------------------------------------
>
>
> ------------------------------------
>
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>
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>
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