trigger question

[Grant Richter]

The Electronotes ENS-76 designs used a 50 microsecond,
five volt trigger pulse. This is a little short for general use.

One argument for a 1 millisecond pulse width is that the
positive or negative edge trigger should sound similar, timing
wise.

----------
> From: Paul Perry <pfperry at melbpc.org.au>
> To: charly <charly at softpink.com>
> Cc: synth-diy at mailhost.bpa.nl
> Subject: Re: trigger question
> Date: Sunday, July 18, 1999 7:38 PM
> 
> At 09:24 PM 18/07/99 +0200, charly <charly at softpink wrote:
> 
> >with the software i can change resistor and caps values so that the
> >output pulse-width ranges from 10 psec up to 1000000 secs. is 10 psec
> >enough or should it be in the nsec area?
> 
> in the 'real world', you won't get 10psec from a 555 ;-)
> 
> my feeling is, for this application, 15ms is a safe length.
> Some gear triggers on the rising edge, making pulse length somewhat
> irrelevant. But, I have seen stuff that wanted the full 15ms.
> 
> Another problem is this: what amplitude for the pulse?
> Again, this is gear dependant.
> I've always found 10v enough.
> 
> paul perry (Frostwave analog fx) Melbourne Australia
> 
> BTW always keen to hear experiences on this topic..