I really like your design. Using the remaining signal pins is a smart way to create the needed reference positive and negative voltages.Originally Posted by pippolippi
This circuit not only gives electric isolation but also allows you to get rid of the power supply altogether. Simpler is better.
I'm really tempted to switch to this design, also using RTS to drive a transistor to power my relays. That way, they would only switch from actual CDC to emulator once PC is booted and emulator is ready...
Ale, are you still around ? What do you think of all this ?
Edit : my local dealer has the CNY74-4 which looks compact and well suited so I'd probably go for it. Any comment ?