By sharing and critiquing each others ideas all of us can hopefully come up with something better, and yes, you certainly could use an FET or two to do whatever it is that is in the Recom. For me, it was just easier to use something already assembled and CE certified.Ciao,Lenny
Our approach is somewhat reversed compared to yours Rob,
Why do you use 10 uF electrolytic capacitors and not ceramic multilayer versions ?
The optional diode D3 on the switch multiplexer, isn't it put it the reverse direction ?
I don't fully understand what the multiplexer board does,
does the relay switch inductive loads ? If so, the free wheeling diode is missing in the output.
All the logic of the multiplexer board, couldn't it be advantageously replaced by a CPLD or even a micro-controller ?
The diode has no direction mark on the silk screen.
A programmable multiplexer would be nice, but not at the cost of giving up the flexibility of connecting different output types
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