A circuit is described for powering a chime that outputs audio in response to detection of an entity by a video doorbell. The circuit includes a power source for generating a first signal. A first switch is coupled to the power source. The first switch is configured to provide, in response to the first signal, a first direct-current (DC) voltage signal during a first operating mode where the video doorbell receives an input that triggers actuation of the chime in response to detection of the entity. A second switch is coupled to the power source and the first switch. The second switch is configured to provide, in response to the first signal, a second DC voltage signal during a second operating mode where the chime outputs the audio in response to the input that triggers actuation of the chime in response to detection of the entity.