electrousa
New Member
I need to design a circuit which converts 220V AC signals into 3.3V DC signals.
The 220V AC signals are part of elevator system which is used to detect every single elevator's status and report to a central control unit or something like that.
The 3.3V DC signals are to an embedded micro controller which is on my board.
What I need to do is to find a circuit which converts the 220V AC signals into 3.3V DC signals and finally can be interfaced to my micro controller.
I have no knowledge on the elevator system so if anyone have advices on how to converts 220V AC signals specially in elevator system to 3.3V DC signals, that will be great appreciated.
Any general knowledge on how to convert high voltage AC signals to low voltage DC signals are also great!
Thanks in advance.
The 220V AC signals are part of elevator system which is used to detect every single elevator's status and report to a central control unit or something like that.
The 3.3V DC signals are to an embedded micro controller which is on my board.
What I need to do is to find a circuit which converts the 220V AC signals into 3.3V DC signals and finally can be interfaced to my micro controller.
I have no knowledge on the elevator system so if anyone have advices on how to converts 220V AC signals specially in elevator system to 3.3V DC signals, that will be great appreciated.
Any general knowledge on how to convert high voltage AC signals to low voltage DC signals are also great!
Thanks in advance.