Abstract: Disclosed is a vending system for supply of product from a plurality of containers each having a corresponding access door having an electrically activatable lock arrangement 200. The system has an interface module by which a predetermined maximum electrical power is made available for supply to the containers and lock arrangements such that each lock arrangement has a plurality of operational modes. The modes include: an active mode by which the lock arrangement is activatable in response to a vending instruction; a standby mode by which the lock arrangement awaits a vending instruction; and a sleep mode by which the lock arrangement minimises power drawn from the interface module. The interface module operates the lock arrangements in the standby mode and the interface module operates at least one lock arrangement in the sleep mode, and at least one lock arrangement in the active mode.

Abstract: Disclosed is a vending system for supply of product from a plurality of containers each having a corresponding access door having an electrically activatable lock arrangement 200. The system has an interface module by which a predetermined maximum electrical power is made available for supply to the containers and lock arrangements such that each lock arrangement has a plurality of operational modes. The modes include: an active mode by which the lock arrangement is activatable in response to a vending instruction; a standby mode by which the lock arrangement awaits a vending instruction; and a sleep mode by which the lock arrangement minimises power drawn from the interface module. The interface module operates the lock arrangements in the standby mode and the interface module operates at least one lock arrangement in the sleep mode, and at least one lock arrangement in the active mode.

Abstract: Disclosed is a vending system for supply of product from a plurality of containers each having a corresponding access door having an electrically activatable lock arrangement 200. The system has an interface module by which a predetermined maximum electrical power is made available for supply to the containers and lock arrangements such that each lock arrangement has a plurality of operational modes. The modes include: an active mode by which the lock arrangement is activatable in response to a vending instruction; a standby mode by which the lock arrangement awaits a vending instruction; and a sleep mode by which the lock arrangement minimises power drawn from the interface module. The interface module operates the lock arrangements in the standby mode and the interface module operates at least one lock arrangement in the sleep mode, and at least one lock arrangement in the active mode.

Abstract: A turbine engine over-temperature shut-off control circuit includes a series of separate timing circuits and output control signal generation gates. A corresponding set of temperature set-point triggering comparator circuits apply energization signals to their associated timing circuits and gates, to define a temperature vs. time envelope, which turns the turbine off when the turbine has been at a predetermined dangerously high temperature for more than a predetermined length of time.