Is there any difference between:
- An active low relay with the load wired to the NC (normally closed) connector, and
- An active high relay with the load wired to the NO (normally open) connector?
In either case, when the control signal is low, the relay will be open and the circuit will be incomplete. When the control signal goes high, the relay will close the circuit.
I ask because I've come across a number of situations in which people build a logic inverter to get active-high behavior from their active-low relay (which seems to be the most common type, at least for the N-channel relay boards commonly available online).
If you have both NO and NC connections, is the logic inverter necessary?