Hello,
I'm trying to design a circuit with two power supplies for redundancy. Each one should supply both 12V and 5V.
I've decided that only one power supply should be ative at each moment, and that is controlled by a microcontroler.
Something like this:
I initially considered that a pair of relays for each power supply in order to activate/deactivate each side, but that would need some transistors/mosfets to activate the relays so I thought it would be better to use a logical level mosfet (FQP30N06) at the first place.
However, it seems that with this kind of mosfet as a switch, what is switched is the path to ground rather than the 12v/5v lines.
Any suggestion on how to do it, maybe with a different device?
Thanks in advance,
Jabss
I'm trying to design a circuit with two power supplies for redundancy. Each one should supply both 12V and 5V.
I've decided that only one power supply should be ative at each moment, and that is controlled by a microcontroler.
Something like this:
I initially considered that a pair of relays for each power supply in order to activate/deactivate each side, but that would need some transistors/mosfets to activate the relays so I thought it would be better to use a logical level mosfet (FQP30N06) at the first place.
However, it seems that with this kind of mosfet as a switch, what is switched is the path to ground rather than the 12v/5v lines.
Any suggestion on how to do it, maybe with a different device?
Thanks in advance,
Jabss