How do I integrate this MOSFET NOR logic gate with my circuit?

Question

I have got an H bridge circuit controlled by a bridge driver (not in the schematic here). I want to control the disabling of it cutting of the conection to ground. I need the logic of a NOR gate but I don't know how to integrate its circuits with the H bridge. A NOR gate with N channel MOSFETs is like this:

If you check where the output is you will see that is found in the "middle" of it. So, do I have to connect the ground of the h bridge circuit there or do I have to connect this gate in series with the MOSFETs from the bridge?

Option a)

Option b)

Answer 1

OK, so you are not designing ASICs or anything like that. Just putting made components together.

I need the logic of a NOR gate

Uh, nobody is actually putting together those from discrete transistors in such applications! That's how a NOR gate may look when implemented in CMOS on a chip, and that's what the schematic applies to.

You want to buy a single NOR gate in a chip. Like 74LVC1G02, but there are many others that end with "1G02" but start with another 74 family prefix. It's a little 5-pin chip that has exactly one gate in it. It'll work here as long as the supply voltage matches the logic voltage expected by the driver.

Its one commercial driver I used to drive the Mosfets' gates with PWMs.

You want to put the NOR gate on the input of the gate driver, not on the mosfets themselves! The driver takes logic signals and uses them to control the gates. To disable or enable a gate, logic goes before the driver chip. Easy.

If you actually tell us what driver chip you're using, it'll then be possible to tell you how to hook that NOR gate in.