Patent ID: 11869341
Assignee: NICOR, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 11:
12. A method comprising:
positioning a power supply in a first compartment of a back cover, the back cover comprising the first compartment and a second compartment, the power supply configured to receive mains electric power and to produce a doorbell current; and
positioning a first circuit in the second compartment, the first circuit comprising a chiming circuit, a doorbell connector, an inductor, and a monitor circuit; and
enclosing the first compartment and the second compartment by attaching a front cover to the back cover, thereby forming a housing that is configured to be installed in a dual voltage box;
wherein the monitor circuit is connected in parallel to the inductor;
wherein the doorbell current includes an inductor current that passes through the inductor and a monitor current that passes through the monitor circuit;
wherein the inductor current passes into the doorbell connector, then through an external doorbell device, then back through the doorbell connector when the external doorbell device is connected to the doorbell connector;
wherein the monitor circuit produces a trigger sensed signal upon detecting actuation of the external doorbell device; and
wherein the chiming circuit sends a sound signal to a speaker upon receiving the trigger sensed signal to thereby cause the speaker to produce a sound.