Hello, I'm an electrical engineer dipping my foot into solenoids as part of a project here at work.To monitor the position of the solenoid's armature I have a linear pot installed. My is issue revolves around a flyback diode installed across a DC solenoid I am testing. I am low side switching the solenoid with a cheap DPDT relay. Without the flyback diode installed I see massive negative voltage spikes across V(coil) as I would expect. With the diode installed, no large negative spike occurs. Problem solved right?? Wrong, with the flyback diode installed the retract time, specifically the time after turning off the relay but before I see movement of the armature, jumps from 25 ms without the diode to over 100 ms with the diode. My customer's application is very time sensitive, they won't be happy with a +100 ms delay before the armature begins to move when powering off the solenoid. I am also assuming that my customer will want to use a FET for switching the solenoid on and won't like a 100V surge when turning it off, making the diode and something else to speed up the response time a part of their final solution. Any suggestions would be greatly appreciated! Sorry for the PDF, work copier defaults into PDFs.