I'm making my own smart home device with a Raspberry Pi. I will power the Pi on the same circuit as our bell. Now the bell transformer is 8V, 1A and the bell itself uses 0.5A.
I'm thinking to replace the bell transformer with a more powerful one, 12V, 2A or so. But is it possible to safely add the bell to the circuit without giving the device too high a current?
I know when I place two devices in parallel the current is lowered and when you place a resistor in series with the devices it will lower it, but is there not a better way to do this?
In the picture of the circuit the AM1 will be the bell and AM2 the circuit for powering the Pi. Is this safe so that AM1 will not be over 1A?