Triac or MOSFET?

[Balrock]

I have been reading a bit today about MOSFETS. It has left me wondering. I wasn't aware until today that MOSFETs can switch mains voltage and several amps.

So, why would I use a MOSFET instead of say an opto-coupler and Triac if I wanted to interface digital electronics to mains powered levels?

Thanks Paul

 

[(*steve*)]

I think that this will answer most of your questions.

Remember that mosfets can be turned off anywhere and do not require current through them to fall to zero for this to occur.

 

[Balrock]

That has answered quite a few questions. I'll keep that for future reference.

Thanks Steve, appreciated.