Patent attributes
A circuit is described for powering a video doorbell in signal communication with a chime that outputs audio. The circuit includes a switch coupled to a set of input power wires that supply power to the circuit from a source. The switch is operable to switch between: i) a first path of the circuit that supplies power to the video doorbell using the input power wires and ii) a second path of the circuit that supplies power to the chime using the input power wires. The circuit includes a controller that controls the switch to iteratively switch between the first path and the second path based on a timing metric. In response to detection of an object by the video doorbell, the iterative switching between the first path and the second path concurrently powers the video doorbell and the chime without relying on battery power at the video doorbell.