Hello Crutschow,
I think this PWM hit and hold is brilliant using CD4093. I actually have a small application were I need the PWM hit and hold for a 2 Amp solenoid. The solenoid application needs a bit longer delay, so I changed the R and C values to be 22UF instead of 510nf. I have tried the circuit with IRF44z and it worked great. But now I am trying a smaller version with the 4466 mosfet and it simply never goes to the PWM mode. I really do not know what went wrong and I would really appreciate your help. If there is a way to communicate with you to show you the pcb schematics, I would truly appreciate it. My email is: fadyeng18@gmail.com
