I've been trying to simulate a pulse induction driving circuit in Proteus to no avail. One issues appears to be with how I am using Proteus and the other seems to be a simulation or setup error that I can't figure out.
- The system complains about the current probe placed at the top of the inductor. It keeps throwing an error stating that the current probe is ambigious and for the life of me I can't figure out how to fix it or what I did wrong.
- If I do get the simulation to work the current flowing from VCC doesn't have a sharp drop off like I would expect once the MOSFET opens, instead it slowly declines which seems to affect the discharge of the inductor, even though the MOSFET should be open.
Another strange part of the simulation is when I remove the flyback diode and disconnect the right hand circuitry for measurement, there is not large flyback voltage spike. It only goes to -6V and then slowly decays back up followed by a sharp snap back to 0 once the slow current decay finishes.
Any advice as to what I am doing wrong?