The unobvious is that the keyboard bus closes first and opens<br> last...<br> <br> so the voltage is applied to the sample/hold input before the gate...<br> and the gate goes away before the voltage is removed<br> <br> H^) harry<br><br><b><i>Chris Manders <wight446@yahoo.com></i></b> wrote:<blockquote class="replbq" style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> Hi folks<br><br>I am planning on building a simple keyboard circuit<br>for my Synth.<br><br>Looking at some synth schematics, I notice that a<br>large amount of them make use of two seperate bus bars<br>- One for the CV (using a resistor ladder) and one for<br>the gate. Indeed the (later?) ARP Odyssey used three -<br>One further to generate an additional trigger pulse.<br><br>For the ones that use two, why should they choose<br>this? Surely (and I what I have in mind) is that if<br>any voltage is present on the CV input line as a key<br>touches the resistor ladder,!
then
that would be<br>sufficient to generate the 'gate'? Surely just one bus<br>would suffice?<br><br>I feel I am missing something obvious (story of my<br>life, really). :-)<br><br>Chris<br><br><br>__________________________________________________<br>Do You Yahoo!?<br>Tired of spam? Yahoo! Mail has the best spam protection around <br>http://mail.yahoo.com <br></blockquote><br>