Hmm.... interesting.....
Just built it as is. 1.4 is the latest revision. I don't remember why that
diode was added. It prevents the reset pulse from being greater than the
supply voltage. It may have been added for a case when the engine was being
run off a lower voltage than the rest of the synth, or it may be an artifact
left over from the revision process. The truth is I don't remember.
Ken
Ken Stone sasami@... or sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
Just built it as is. 1.4 is the latest revision. I don't remember why that
diode was added. It prevents the reset pulse from being greater than the
supply voltage. It may have been added for a case when the engine was being
run off a lower voltage than the rest of the synth, or it may be an artifact
left over from the revision process. The truth is I don't remember.
Ken
>_______________________________________________________________________
>
> This question is regarding the components around the reset input on
>the 'M' board. I have REV1.4 pcb. Some component connections are
>different than the schematic. For instance: At the junction of the
>reset input-100K to gnd-10n cap there is a diode (anode) connected
>with cathode to +V. There's a couple others but It's hard to put
>schematics into words.
> Are these improvements on the design and the schematics are not yet
>updated or do I need to make adjustments to the pcb.
>
>Thanks,
>P.v3
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>See the following URLS for the CGS Modular Synth home page:
>Main: http://www.cgs.synth.net/
>Secondary: http://otherunicorn.0catch.com/synth/
>Yahoo! Groups Links
>
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Ken Stone sasami@... or sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>