Abstract: An arc fault circuit interrupter test circuit is disclosed. The test circuit incorporates a controller along with at least one power transistor, a current sense circuit and a voltage sense circuit. When the power transistor is operated, the current flowing through the transistor is sensed, and if the current is not at least equal to a threshold value, the voltage at which the power transistor is operated is increased.

Abstract: An automated system for monitoring and testing a sump pump installation includes an electrically-actuated valve which admits liquid to the liquid container in response to a valve control signal. A test control module includes a test control circuit which when actuated supplies a valve control signal to initiate a test cycle during which liquid is admitted to the container to cause the liquid level in the container to rise, after which the sump pump discharges liquid from the container until a predetermined event terminates the test cycle. An indicator circuit indicates in response to completion of the test cycle whether the test was successful or unsuccessful. A communications circuit is included which receives and verifies control signals addressed to the system from an external originator to allow a test cycle to be remotely initiated in the event of impending severe weather or other threats.

Abstract: An apparatus, a system and/or a method provide for wirelessly collecting data corresponding to a product attached to a security device. The security device associated with the product transmits wireless signals throughout a display area. A computer remotely positioned from the security device receives the wireless signals and stores status data of the security device. The computer wirelessly transmits the status data to a remote server, and the remote server determines statistical data from the status data. The remote server stores the statistical data in a database and facilitates user access to the data.

Abstract: An apparatus, a system and a method monitor a device within a zone. A head may wirelessly communicate with an emitter and a hub. The head may connect and/or disconnect power to a battery of the device according to a charge of the battery. The head may monitor an attachment of the head to the device and/or a connection of a cable to the head and/or a port of the device. The emitter may transmit a signal to define the zone and/or the head may receive the signal. A distance between the head and the emitter may be determined using a received signal strength indication and/or a time of flight measurement of the signal from the emitter to the head. The distance may indicate whether the head is positioned within the zone or outside of the zone. An alarm may be triggered if the head is positioned outside of the zone.

Abstract: An automated system for monitoring and testing a sump pump installation includes an electrically-actuated valve which admits liquid to the liquid container in response to a valve control signal. A test control module includes a test control circuit which when actuated supplies a valve control signal to initiate a test cycle during which liquid is admitted to the container to cause the liquid level in the container to rise, after which the sump pump discharges liquid from the container until a predetermined event terminates the test cycle. An indicator circuit indicates in response to completion of the test cycle whether the test was successful or unsuccessful. A communications circuit is included which receives and verifies control signals addressed to the system from an external originator to allow a test cycle to be remotely initiated in the event of impending severe weather or other threats.

Abstract: An arc fault circuit interrupter test circuit is disclosed. The test circuit incorporates a controller along with at least one power transistor, a current sense circuit and a voltage sense circuit. When the power transistor is operated, the current flowing through the transistor is sensed, and if the current is not at least equal to a threshold value, the voltage at which the power transistor is operated is increased.

Abstract: A circuit, a system and/or a method detect a passive electrical connection and/or an active electrical connection between an electrical device and a power supply. An integrity of the electrical connection between the electrical device and the power supply is monitored to determine if the electrical device may have access to power and/or to determine if the electrical device may be secure while on display. A high frequency AC signal is modulated onto a positive power rail between the electrical device and the power supply. Capacitance circuitry of the electrical device may remove the high frequency signal from the positive power rail. An absence of the high frequency signal on the positive power rail indicates that the electrical connection exists between the electrical device and the power supply. A presence of the high frequency signal on the positive power rail indicates that the electrical connection does not exist between the electrical device and the power supply.

Abstract: An arc fault circuit interrupter test circuit is disclosed. The test circuit incorporates a controller along with at least one power transistor, a current sense circuit and a voltage sense circuit. When the power transistor is operated, the current flowing through the transistor is sensed, and if the current is not at least equal to a threshold value, the voltage at which the power transistor is operated is increased.

Abstract: A multi-sensor alarm apparatus, may prevent and/or may deter a theft and/or a removal of one or more articles from a display stand. A base, a main body and a head unit are provided. The base and the main body are secured to the display stand. The multi-sensor alarm apparatus monitors an integrity of the attachment of the main body to the base with a separation sensor. Further, the multi-sensor alarm apparatus monitors sensors connected to the head unit and/or to the main body. The sensors may be removed and/or added as needed depending on the articles to be secured.

Abstract: An arc fault circuit interrupter test circuit is disclosed. The test circuit incorporates a controller along with at least one power transistor, a current sense circuit and a voltage sense circuit. When the power transistor is operated, the current flowing through the transistor is sensed, and if the current is not at least equal to a threshold value, the voltage at which the power transistor is operated is increased.

Abstract: The temperature of shelves used in a food holding cabinet are measured using a transistor. The voltage across a PN junction being known to be temperature dependent, the shelf temperature can be inferred from a calculated temperature of a PN junction of a transistor thermally coupled to a heated or refrigerated shelf. No calibration of the measurement device is required since the PN junction voltage, current and temperature relationship is well known.

Abstract: An evidence chain of custody system that is application-specific auditable and trackable secure smart mobile containers (SMC) for securely storing evidence items that are collected at crime scenes and search locations pursuant to subpoenas or warrants. Each SMC includes a electronics package that can read RF tags applied to evidence bags or totes placed in the SMC or for oversized items, associated with the event or scene, that are tagged with active RF tags. The electronics package also includes condition sensors and an RF transmitter module to permit remote reporting and monitoring of GPS/RSSI location and condition. The SMC includes an electronic lock that provides access security and an audit trail of all opening, closing, and other events.

Abstract: The temperature of shelves used in a food holding cabinet are measured using a transistor. The voltage across a PN junction being known to be temperature dependent, the shelf temperature can be inferred from a calculated temperature of a PN junction of a transistor thermally coupled to a heated or refrigerated shelf. No calibration of the measurement device is required since the PN junction voltage, current and temperature relationship is well known.

Abstract: A universal food holding cabinet has multiple compartments, the temperatures of which are under software control by microprocessors or microcontrollers located on power supply circuit boards for corresponding compartments. Each compartment can have different temperature control requirements with different requirements being met by different programs in different processors, or different operating parameters for the same program. The cabinet is configured to prevent the power supply boards from being installed incorrectly, to provide an address to a power supply circuit board when it is installed and by which a power supply circuit can be addressed by a master controller to receive downloads of executable instructions and/or data.

Abstract: Bezels or escutcheons for a temperature-controlled food holding cabinet are removable and field replaceable by the use of interlocking tabs and detents that hold the escutcheon in place and align the escutcheon to electrical connectors. A tab formed on either the escutcheon or chassis of the cabinet, engages a corresponding detent formed on either the cabinet chassis or the escutcheon. Two tabs and detents are preferably used. One tab engages a corresponding detent with an interference fit.

Abstract: A universal food holding cabinet has multiple compartments, the temperatures of which are under software control by microprocessors or microcontrollers located on power supply circuit boards for corresponding compartments. Each compartment can have different temperature control requirements with different requirements being met by a different program in different processors, or different operating parameters for the same program. The cabinet is configured to prevent the power supply boards from being installed incorrectly, to provide an address to a power supply circuit board when it is installed and by which a power supply circuit can be addressed by a master controller.

Abstract: A circuit, a system and/or a method detect a passive electrical connection and/or an active electrical connection between an electrical device and a power supply. An integrity of the electrical connection between the electrical device and the power supply is monitored to determine if the electrical device may have access to power and/or to determine if the electrical device may be secure while on display. A high frequency AC signal is modulated onto a positive power rail between the electrical device and the power supply. Capacitance circuitry of the electrical device may remove the high frequency signal from the positive power rail. An absence of the high frequency signal on the positive power rail indicates that the electrical connection exists between the electrical device and the power supply. A presence of the high frequency signal on the positive power rail indicates that the electrical connection does not exist between the electrical device and the power supply.

Abstract: A testing system includes a hand-held transmitter that plugs into a receptacle electrically coupled to a selected branch circuit. The transmitter includes a circuit effective to test an arc fault circuit interrupter electrically coupled to the branch circuit by creating a first pulse on the branch circuit that is effective to trip the arc fault circuit interrupter. The transmitter can perform at least one additional test including: determining whether the receptacle is wired properly; determining a location of a circuit interrupting device electrically coupled to the branch circuit by creating a second pulse on the branch circuit that can be sensed by a receiver located proximately to the respective circuit interrupting device and broadly tuned about a frequency of the second pulse; and testing a ground fault circuit interrupter electrically coupled to the branch circuit by creating a third pulse on the branch circuit that is effective to trip the ground fault circuit interrupter.

Abstract: A multi-sensor alarm apparatus, system and method may prevent and/or may deter a theft and/or a removal of one or more articles from a display stand. A base, a main body and a head unit are provided. The base and the main body are secured to the display stand. The multi-sensor alarm apparatus monitors an integrity of the attachment of the main body to the base with a separation sensor. Further, the multi-sensor alarm apparatus monitors sensors connected to the head unit and/or to the main body. The sensors may be removed and/or added as needed depending on the articles to be secured.

Abstract: A circuit interfaced between a first USB host and a second USB host for providing unidirectional transmission of data signals from the first USB host to the second USB host is provided. A first converter circuit is operable to receive data signals from the first USB host and convert them from a USB protocol to a second communications protocol. A second converter circuit is operable to receive the converted data signals from the first converter circuit and convert them from the second communications protocol to the USB protocol for transmission to the second USB host. The first and second converter circuits are electrically connected to each other in such a manner as to provide a transmission path from the first USB host to the second USB host and to disable a transmission path from the second USB host to the first USB host.