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Biphasic Pulse Generator

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otaylor:
I would like to build a biphasic pulse generator with 2 outputs which is controlled by an Arduino Nano. It should be able to output +/- 10V with a maximum current of 10 mA. The shortest adjustable pulse length should be 1 ms.
I attached the schematic I figured out so far. I'm basically using a 2-channel DAC, whose signal is amplified + shifted by an OpAmp in a differential amplifier configuration. I'm using a DC-DC converter to generate +/- 12V.
Do you think my schematic is fine so far or are there other details you would improve?

Thanks a lot! :)

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