David_
Advanced Member level 2
Hello.
I have been designing a dual floating channel lab power supply from times to times and I wanted to have relays to completely disconnect the outputs, I can't recall exactly why but I had a good reason for why I wanted to do that.
The last thing I looked at was to use solid state relays(obviously the DC kind) but it occurs to me now that I am really unsure if such a relay really disconnects the load as a mechanical relay would.
If a MOSFET isn't suitable for disconnecting the output of power supplies due to what can happen if the output terminals would be exposed to some potential generated from another source that could exceed the MOSFETs reverse breakdown(not sure what it is called in MOSFETs but they can be damaged is the drain is exposed to a unsuitable potential).
If so then a solid state relay wouldn't be suitable ether would it?
I am really unsure about this.
Regards
I have been designing a dual floating channel lab power supply from times to times and I wanted to have relays to completely disconnect the outputs, I can't recall exactly why but I had a good reason for why I wanted to do that.
The last thing I looked at was to use solid state relays(obviously the DC kind) but it occurs to me now that I am really unsure if such a relay really disconnects the load as a mechanical relay would.
If a MOSFET isn't suitable for disconnecting the output of power supplies due to what can happen if the output terminals would be exposed to some potential generated from another source that could exceed the MOSFETs reverse breakdown(not sure what it is called in MOSFETs but they can be damaged is the drain is exposed to a unsuitable potential).
If so then a solid state relay wouldn't be suitable ether would it?
I am really unsure about this.
Regards