Steve2381
Senior Member
Hi all.
New project being designed here, and a small size is essential.
My question is that of powering a 5v or 12v circuit from the mains, without a transformer (my usual method). This is something I have never done before.
The project is basically a relay switch with certain advanced functions, but it will need to be supplied with simply 230v - no batteries. How do they achieve quality low voltage supplies in small commercial 230v equipment e.g smoke detectors, PIR sensors etc
I know playing with 230v is a whole new world.... but I am an electrician so I know what I am tinkering with.
New project being designed here, and a small size is essential.
My question is that of powering a 5v or 12v circuit from the mains, without a transformer (my usual method). This is something I have never done before.
The project is basically a relay switch with certain advanced functions, but it will need to be supplied with simply 230v - no batteries. How do they achieve quality low voltage supplies in small commercial 230v equipment e.g smoke detectors, PIR sensors etc
I know playing with 230v is a whole new world.... but I am an electrician so I know what I am tinkering with.