NO vs NC

[Nr1madman]

Doesn't matter really what you think the fact is only works one way.

Of course you are right :)
Thanks for the explanation, I needed that and will come back to it to read it again!

The way I think of a circuit is if it's open, then the current is free to run through. If it's closed its a broken component or disconnected switch or something :)

As I said, language difficulties!

Cheers

[JAZZCNC]

As I said, language difficulties!

Cheers

Would work the same if you came from Mars, so even in your native language electrical circuits work the same so it's not really language at all it's you who doesn't understand electrical cicuits. So go learn electrical Circuits in your native language if it helps.

[Neale]

The way I think of a circuit is if it's open, then the current is free to run through. If it's closed its a broken component or disconnected switch or something :)

As I said, language difficulties!

Cheers

What you say makes perfect sense - if you are thinking about a tap or valve controlling water! Tap closed - no flow. Tap open - flow. However, when you are talking about electrical contacts, you have to imagine the contacts themselves. "Closed" means the contacts are touching, so current flows. "Open" means that there is a gap between them so no current flows. When you hear open or closed referring to switches, visualise the contacts themselves and it might help. Same principle applies even when it's an electronic switch like a proximity switch - closed and current flows, open and current can't flow. Then, "normally closed" means that current will flow until the switch is operated. Same for a relay.

Good luck!