09-05-2012, 09:00 AM
The 5Vaux is used by the sine converter.
It's normal to have different rails dotted around, even if they have the same voltage. In this case, the other 5V rail is used by the TTL IC and the square wave circuitry. Switching spikes from these might find their way into the sine wave converter, so that might explain the separation...
From the diagram, I'm not sure what you mean by the ribbon connector. Is there two PCBs inside, joined by the ribbon? A couple of pictures might help - and would be interesting at the very least
Cheers,
Mark
It's normal to have different rails dotted around, even if they have the same voltage. In this case, the other 5V rail is used by the TTL IC and the square wave circuitry. Switching spikes from these might find their way into the sine wave converter, so that might explain the separation...
From the diagram, I'm not sure what you mean by the ribbon connector. Is there two PCBs inside, joined by the ribbon? A couple of pictures might help - and would be interesting at the very least
Cheers,
Mark
