Flyback Protection
I have a project that I want to drive some solenoids with mosfets and I wanted to know what everyone has used to keep the Prop and mosfet drivers safe from flyback currents. A schottky diode is what I was hinking of using. The solenoid is a 12vdc about 1amp by the way.
Comments
If the solenoid is being used for something that brings it in, and it stays in for a reasonable time, then at the expence of a few more components it could be good to have a two stage cct, as well, that gets the core shifting at full current and then after closure only the holding current is maintained, although if the useage is continuous rapid movements then this would be a waste of time.
At the risk of sounding stupider, I have to ask: what's a cct?
Using a schottky diode rather than a regular one would exacerbate the slowness of switching BTW.
The flyback currents aren't the problem its the _voltage_ that does the damage.