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serge Programmer trigger outputs

serge Programmer trigger outputs

2018-01-23 by Mike Burnham

I have built the programmer with 16 steps. it works fine but the trigger output is quite low in amplitude and very short.

Is this true to the design or some kind of fault in my assembly?

I don't have any envelope generators that take a trigger input so its very difficult to shape a useable envelope.

Thanks

Mike


Re: serge Programmer trigger outputs

2018-01-23 by john slee

If by trigger input you mean a very short, fixed-width pulse... why not build a CGS24 or two?

(and don't make the same dumb mistake I made, installing a TL072 in place of the LM358 specified by Ken. Thankfully the pinout is the same!)

John
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On 24 January 2018 at 09:34, Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

I have built the programmer with 16 steps. it works fine but the trigger output is quite low in amplitude and very short.

Is this true to the design or some kind of fault in my assembly?

I don't have any envelope generators that take a trigger input so its very difficult to shape a useable envelope.

Thanks

Mike



Re: serge Programmer trigger outputs

2018-01-23 by Ken Stone

The "pulse out" outputs on the programmer should remain high for as long as the stage is selected and the LED is lit.
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On Wed, Jan 24, 2018 at 9:34 AM, Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

I have built the programmer with 16 steps. it works fine but the trigger output is quite low in amplitude and very short.

Is this true to the design or some kind of fault in my assembly?

I don't have any envelope generators that take a trigger input so its very difficult to shape a useable envelope.

Thanks

Mike





--
Ken Stone otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>

Re: serge Programmer trigger outputs

2018-01-24 by Mike Burnham

But the All Event Pulse is a trigger right?


Sent from my iPhone

On 23 Jan 2018, at 23:16, Ken Stone otherunicorn@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

The "pulse out" outputs on the programmer should remain high for as long as the stage is selected and the LED is lit.

On Wed, Jan 24, 2018 at 9:34 AM, Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

I have built the programmer with 16 steps. it works fine but the trigger output is quite low in amplitude and very short.

Is this true to the design or some kind of fault in my assembly?

I don't have any envelope generators that take a trigger input so its very difficult to shape a useable envelope.

Thanks

Mike





--
Ken Stone otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>

Re: serge Programmer trigger outputs

2018-01-24 by Ken Stone

It is. To make it longer, try adding a 100n or even greater cap across the 47k resistor that is between the base and emitter of the NPN. Increasing the 47k to 100k would also help, once the cap has been added.
The make the signal hotter, replace the 2k2 in the output divider with 1k.
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On Wed, Jan 24, 2018 at 8:01 PM, Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

But the All Event Pulse is a trigger right?


Sent from my iPhone

On 23 Jan 2018, at 23:16, Ken Stone otherunicorn@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

The "pulse out" outputs on the programmer should remain high for as long as the stage is selected and the LED is lit.

On Wed, Jan 24, 2018 at 9:34 AM, Mike Burnham mikejburnham@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

I have built the programmer with 16 steps. it works fine but the trigger output is quite low in amplitude and very short.

Is this true to the design or some kind of fault in my assembly?

I don't have any envelope generators that take a trigger input so its very difficult to shape a useable envelope.

Thanks

Mike





 --
Ken Stone otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>




--
Ken Stone otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>

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