Feb 22, 2010 #1 J jgeens Newbie level 3 Joined Aug 17, 2009 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,300 I have a question: I want to switch a negative powersupply (on and off). I have a controller (open drain,pull-up outputs). This was my idea: (I wont work because the current cant flow through the fet) **broken link removed**
I have a question: I want to switch a negative powersupply (on and off). I have a controller (open drain,pull-up outputs). This was my idea: (I wont work because the current cant flow through the fet) **broken link removed**
Feb 23, 2010 #2 I IanP Advanced Member level 7 Joined Oct 5, 2004 Messages 7,929 Helped 2,311 Reputation 4,624 Reaction score 531 Trophy points 1,393 Location West Coast Activity points 66,416 While switching negative power with N-Channel MOSFET it's better idea to use optocoupler .. see attached picture .. More on this issue you can find here: **broken link removed** Rgds, IanP
While switching negative power with N-Channel MOSFET it's better idea to use optocoupler .. see attached picture .. More on this issue you can find here: **broken link removed** Rgds, IanP