Invention Grant
- Patent Title: Overvoltage recovery circuit and a controller and HVAC system including the same
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Application No.: US16225339Application Date: 2018-12-19
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Publication No.: US10895391B2Publication Date: 2021-01-19
- Inventor: Jimmie Curry
- Applicant: Lennox Industries Inc.
- Applicant Address: US TX Richardson
- Assignee: Lennox Industries Inc.
- Current Assignee: Lennox Industries Inc.
- Current Assignee Address: US TX Richardson
- Agency: Shackelford, Bowen, McKinley & Norton, LLP
- Main IPC: H02H9/04
- IPC: H02H9/04 ; F24F11/30 ; H03K17/082 ; F24F11/89 ; H02H3/06 ; H02H3/20 ; H02H7/125 ; H02H9/00 ; F24F11/32 ; F24F110/00

Abstract:
An overvoltage recovery circuit (ORC), a controller for an HVAC system and an HVAC system are disclosed herein. In one embodiment, the ORC includes: (1) a first supply voltage terminal connected to a first voltage supply, (2) a second supply voltage terminal connected to a second voltage supply, (3) interruption circuitry including a switch and a trip terminal connected to the second supply voltage terminal and (4) detection circuitry connected to the first supply voltage terminal and the switch of the interruption circuitry, the detection circuitry configured to operate the switch in response to an overvoltage condition at the first supply voltage terminal.
Public/Granted literature
- US20190120515A1 OVERVOLTAGE RECOVERY CIRCUIT AND A CONTROLLER AND HVAC SYSTEM INCLUDING THE SAME Public/Granted day:2019-04-25
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