From: mrdarrett@gmail.com   
      
   On Tuesday, June 14, 2022 at 6:20:13 AM UTC-7, Phil Hobbs wrote:   
   > Michael Darrett wrote:    
   > > On Monday, June 13, 2022 at 12:35:34 PM UTC-7, Michael Darrett wrote:    
   > >> For a project I noticed my Arduino PWM pump controller (basically just an   
   Arduino, MOSFET, and protection diode) was behaving oddly, so I powered the   
   pump directly from the 12V power supply, turning it off and on as needed   
   manually.    
   > >>    
   > >> I looked more closely at my breadboard, and noticed the drain and source   
   were touching. The circuit had been running for a few minutes this way.    
   > >>    
   > >> Did I damage my MOSFET, or is this ok?    
   > >>    
   > >> Thanks,    
   > >>    
   > >> Michael    
   > >    
   > >    
   > > It's a PSMN022-30PL, driven by a 12V, 3A power supply, if it matters.    
   > >    
   > > Thanks,    
   > >    
   > > Michael    
   > >   
   > Should be OK from an electrical POV--the pump limits the current. Of    
   > course, something may have got damaged by whatever mechanical trauma    
   > caused the short.    
   >    
   > Cheers    
   >    
   > Phil Hobbs   
      
      
   Thanks Phil and Dan.   
      
   On my breadboard, the wires going to the drain and source had too much   
   insulation removed before going into the breadboard, and they simply crossed.    
   After noticing, I moved them further away from each other.  I was more worried   
   about whether I could    
   rely on the mosfet again than in the power supply, but thanks Dan for the   
   caution that the power supply could be damaged.  It's just a run-of-the-mill   
   power supply which (I think) powered a cable TV box or something similar,   
   which has long since been    
   lost.   
      
   Have a great one!   
      
   Michael   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)