wrote in message
oups.com...
Where does a lighted doorbell button get its power from? It only has
two wires and it lights without ringing the doorbell.

Mike

The light bulb is in series with the transformer and the door bell coil.
The bulb does not draw enough current that would pull in the door bell
coil. When you press the button, the bulb is shorted out and the only thing
in the circuit with the transformer is the coil.