BACKUP CIRCUIT FOR ELECTRICITY SUPPLY, ELEVATOR SYSTEM, AND METHOD

摘要

The invention relates to a backup circuit (1) for electricity supply for ensuring the electricity supply of an electronic overspeed governor (3) in connection with a malfunction of the electricity supply. The backup circuit (1) for electricity supply comprises an energy storage (2). The backup circuit (1) for electricity supply is configured to disconnect the electricity supply from the energy storage (2) ensuring the electricity supply of the electronic overspeed-governor (3) to the overspeed governor (3) when the malfunction of the electricity supply continues.