A system and method to determine a health status of a LED light string. The system (100) includes a circuit that includes a LED light string (110) and a pulsed current driver (115) of the LED light string. The circuit is connected to a power source (105). The system includes a current sensor (120) measuring a current through the circuit. The system includes a detecting device (130) determining a state of the circuit. The detecting device determines an expected current expected to be passing through the circuit where the expected current is associated with the state. The detecting device receives a current measurement from the current sensor during a time when the circuit is in the state. The detecting device determines a comparison between the current measurement and the expected current. The detecting device generates an output indicative of a health status of the circuit based on the comparison.

The present disclosure relates to a method of manufacturing a tamper proof light emitting module comprising the steps of (a) pre-assembling the light emitting module into a testing configuration including a housing and one or more light emitting elements mounted within the housing, the housing including first and second housing components connected together using at least one removable fastener connecting the first and second housing components; (b) testing the light emitting module to confirm the light emitting elements are operable; (c) after step (b), removing the removable fastener; (d) replacing the removable fastener removed in step (c) with at least one breakaway fastener; and (e) tightening the breakaway fastener(s) until the head of the breakaway fastener(s) breaks off so that the breakaway fastener(s) is no longer removable, thereby creating a final, tamper proof configuration of the light emitting module.

The present disclosure relates to a method of manufacturing a tamper proof light emitting module comprising the steps of (a) pre-assembling the light emitting module into a testing configuration including a housing and one or more light emitting elements mounted within the housing, the housing including first and second housing components connected together using at least one removable fastener connecting the first and second housing components; (b) testing the light emitting module to confirm the light emitting elements are operable; (c) after step (b), removing the removable fastener; (d) replacing the removable fastener removed in step (c) with at least one breakaway fastener; and (e) tightening the breakaway fastener(s) until the head of the breakaway fastener(s) breaks off so that the breakaway fastener(s) is no longer removable, thereby creating a final, tamper proof configuration of the light emitting module.

Chip packages with improved tamper resistance and methods of using such chip packages to provide improved tamper resistance. A lead frame includes a die attach paddle, a plurality of outer lead fingers, and a plurality of inner lead fingers located between the outer lead fingers and the die attach paddle. A chip is attached to the die attach paddle. The chip includes a surface having an outer boundary and a plurality of bond pads arranged proximate to the outer boundary. A first plurality of wires extend from the outer lead fingers to respective locations on the surface of the chip that are interior of the outer boundary relative to the bond pads. A tamper detection circuit is coupled with the first plurality of wires. A second plurality of wires extend from the inner lead fingers to the bond pads on the chip. The second plurality of wires are located between the lead frame and the first plurality of wires.

There is described a method for assembling a connectorized electrical equipment. A connectivity list required for the connectorized electrical equipment is provided, comprising an origin connector and its identifier, a destination electrical equipment subpart and its identifier thereof; and a list of connections between the origin connector and the destination electrical equipment subpart. By querying a database comprising a library of connectors, a construction plan is generated for the connectorized electrical equipment. The construction plan includes diagrams for assembly, images to assist the assembler, a list of material for managing inventory and instructions. An ATE can be connected to the connectorized electrical equipment to be assembled. Based on the construction plan, instructions are provided for a connection between the origin connector and the destination electrical equipment subpart. Connections can be made manually or using the ATE. All connections are registered in real time for progression tracking and instruction updates.

A driver circuit arrangement for driving a transistor bridge, which includes at least a first half-bridge composed of a low-side transistor and a high-side transistor, is described herein. In accordance with one example of the description, the circuit includes a current source and a detection circuit. The current source is operably coupled to the high-side transistor of the first half-bridge and configured to supply a test current to the first half bridge. The detection circuit is configured to compare a voltage sense signal, which represents the voltage across the high-side transistor of the first half-bridge, with at least one first threshold to detect, dependent on the result of this comparison, whether a short-circuit is present in the first half-bridge.

A driver circuit arrangement for driving a transistor bridge, which includes at least a first half-bridge composed of a low-side transistor and a high-side transistor, is described herein. In accordance with one example of the description, the circuit includes a current source and a detection circuit. The current source is operably coupled to the high-side transistor of the first half-bridge and configured to supply a test current to the first half bridge. The detection circuit is configured to compare a voltage sense signal, which represents the voltage across the high-side transistor of the first half-bridge, with at least one first threshold to detect, dependent on the result of this comparison, whether a short-circuit is present in the first half-bridge.

An image forming apparatus includes a plurality of light-emitting element array chips including a light-emitting element array and a transfer element array, and a control driver applying a signal to the plurality of light-emitting element array chips. The control driver includes a check terminal that measures signals output from the plurality of light-emitting element array chips, and the control driver determines whether any of the plurality of light-emitting element array chips are defective by analyzing the signals measured at the check terminal.

An image forming apparatus includes a plurality of light-emitting element array chips including a light-emitting element array and a transfer element array, and a control driver applying a signal to the plurality of light-emitting element array chips. The control driver includes a check terminal that measures signals output from the plurality of light-emitting element array chips, and the control driver determines whether any of the plurality of light-emitting element array chips are defective by analyzing the signals measured at the check terminal.

A fuel cell system includes a drive motor, a fuel cell, an auxiliary machine, a secondary battery, a temperature sensor, a current sensor, and a control section. The control section controls the secondary battery for discharging by driving the drive motor or the auxiliary machine and for charging through power generation by the fuel cell or regeneration by the drive motor when a temperature measured by the temperature sensor is lower than a specified value.