Hi, I'm a newbie who has bought a Picoscope 2204. One of my planned applications is to measure voltages in a circuit supplying pulse-width modulated power to a 12V brushed DC motor. I am concerned about the potential damaging effects on the scope of the fly-back voltages generated by rapid switching of 12V through an inductive load. Are there any precautions that I should take to protect the Picoscope?
On this occassion the switching MOSFET has inbuilt protective Zener diodes and I have added a power diode across the motor. Is this sufficient to protect the scope and could thw scope be used even if these diodes were not present?