Reply To: Saturation of mixers and sum/sub

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#1786

Davide Mancini
Keymaster

Hi there!
The mixers and the add/sub are implemented with rail to rail opamps that are powered with 5V.
It’s not safe to go with negative voltages on the exposed pins, but a series resistor and a couple of diodes will protect the NS1 from out of range (ad this is the circuitry on the cited nanobridge). If you have a breadboard at hand you can easily do this!
Regarding the example you bring in (monotron) you are right, if the output of the monotron (or any synth) is not bigger than 3/4Vpp you can safely put it into the NS1, also as you suggest, in one if the channels of the add/sub or the mixers.