Invention Application
- Patent Title: Doorbell Chime Bypass Circuit
-
Application No.: US17156438Application Date: 2021-01-22
-
Publication No.: US20220237993A1Publication Date: 2022-07-28
- Inventor: Daniel Adam Warren , Eric Marschalkowski , Brian Conner
- Applicant: GOOGLE LLC
- Applicant Address: US CA Mountain View
- Assignee: GOOGLE LLC
- Current Assignee: GOOGLE LLC
- Current Assignee Address: US CA Mountain View
- Main IPC: G08B3/00
- IPC: G08B3/00 ; H03K17/0812

Abstract:
A doorbell chime bypass circuit includes a first node, a second node, and a bi-directional FET switch in series with the first node and the second current node. The bi-directional FET switch includes a first FET and a second FET in series, and is configured to cease conducting current between the first and second nodes when gate voltages of the first and second FETs are below a cut-off threshold. The bypass circuit further includes a sensing circuit configured to determine a level of current flowing through the bi-directional FET switch, and a switch controller configured to set the gate voltages of the first and second FETs to a level below the cut-off threshold when the sensing circuit senses that the level of current meets a doorbell press current threshold, causing the bi-directional FET switch to cease conducting current between the first and second nodes.
Public/Granted literature
- US11645894B2 Doorbell chime bypass circuit Public/Granted day:2023-05-09
Information query