I made a little circuit to drive a solenoid which grips cable in a machine.
It is a replacement for the manufacturers part, so I can't change the inputs or anything.
The circuit is inspired by the manufacturers circuit, which is very unreliable and complicated (I don't even fully understand it). My version is simplified, but I have used their ideas, such as running on un-filtered rectified DC. (just in case you were wondering why I would do such a thing...)
The circuit works OK, the solenoid grips the wire correctly etc...
The mosfet gets quite hot just sitting idle, leading me to think that perhaps it is not getting switched off properly.
The voltage on the Gate is normally 0V, going up to 5V when triggered.
If you are familiar with mosfet circuits, and can spot the problem, please let me know!
PS: This is a work project, so any suggestions over the weekend can't be tested until Monday, so don't think I'm asking for your help then ignoring you! All expert tips are appreciated!