The object of the invention is a device (1) for protecting a component (EB) against thermal overload. The device (1) has an actuating mechanism (B) which is brought into thermal contact with the component to be protected (EB) when in use, and which is capable of activating a switch (S) upon reaching a certain temperature T.sub.switch. The switch (S) can be used both as a disconnection switch and as a short-circuiting switch in relation to the component to be protected (EB), with the switch (S) furthermore having a selection mechanism (A) with which one can choose whether the switch (S) should be used as a disconnection switch or as a short-circuiting switch in relation to the component to be protected (EB).

An LED lamp tube and driver circuit that is direct replacement for fluorescent tubes with or without ballasts, that works with standard AC high voltage current input, with high frequency pulse current input, or with lower voltage input. The tube is wired to receive the current that is input from any two electrode pins from among the pairs of pins at the ends of the tube, which house the driver circuitry. The input current is converted to DC through a rectifier circuit, is filtered of unwanted frequencies and voltage through a filter circuit, and is controlled with a step-down constant current circuit to drive an LED array within the tube. The circuits comprise current loops having at least one current transformer, at least one transistor, capacitors, inductors, and resistors and interacting with an integrated circuit.

An overheat-protection device with a cord that includes a transmission wire to transmit electrical power and a sensor wire to transmit a signal, a plug attached to an end of the cord, and a thermistor includable in the plug and connected to the sensor wire. The signal may be received and/or analyzed by a sensing device, which may control a switching device to open and/or close a power circuit. The thermistor may detect a level of heat, which may be communicated as a signal via the sensor wires. The signal may be definable by the thermistor varying a level of resistance to the signal responsive to the level of detected heat. The thermistor may be a NTC thermistor and may be constructed from a thermal plastic or a ceramic.

The present disclosure provides a high-temperature thermal pellet composition that maintains structural rigidity up to a transition temperature of about 240° C. The composition comprises at least one organic compound (e.g., triptycene or 1-aminoanthroquinone). The pellet can be disposed in a housing of a thermally-actuated, current cutoff device, such as a high-temperature thermal cutoff device (HTTCO). Also provided are material systems, which include the pellet composition and a high-temperature seal that provides substantial sealing up to at least the transition temperature. Methods of making such high-temperature pellet compositions and incorporating them into a thermally-actuated, current cutoff device are also provided.

Embodiments are directed to apparatuses used with a computer-implemented method for controlling power flow to an electronic device, including: receiving a transmission from a service processing device, the transmission to trigger an open switch between the electronic device and a power supply; and causing an open switch to occur through use of an interlock mechanism. Embodiments provide a temperature-driven interlock mechanism and moisture-driven interlock mechanism.

A bi-directional transmitter/receiver according to an embodiment includes a pin connected with a main control circuit, a transistor connected with a first electrode to the pin, a Schmitt trigger which determines an output according to a voltage of the pin, and a temperature sensor which is connected to the pin and which senses temperature and outputs temperature information to the pin. A driving circuit for controlling switching operation of one or more switches includes a bi-directional transmitter/receiver.

An integrated circuit that may be employed as a smart switch is described herein. In accordance with one embodiment the integrated circuit includes a power transistor coupled between a supply pin and an output pin and further includes a control circuit configured to trigger a switch-on and a switch-off of the power transistor in accordance with an input signal. The control circuit is configured to trigger a switch-off of the power transistor when a load current passing through the power transistor is at or above a predetermined current and a supply voltage received at the supply pin is at or below a predetermined threshold voltage.

An electronic temperature switch (10), comprises a measurement circuit (11) that measures temperature and generates an temperature signal corresponding to the sensed temperature; an evaluator circuit (12) that receives said temperature signal and compares said temperature signal to a lower threshold value and an upper threshold value, and generates an evaluation signal indicating when said temperature signal is between the lower temperature threshold value and an higher temperature threshold value; and a loading circuit (13) that in response to the evaluator circuit, generates a first pre-set output signal indicating when the temperature signal is between the lower threshold value and the higher threshold value, and a second pre-set output signal when the temperature signal is not between the lower threshold value and the higher threshold value.

A semiconductor device includes a power supply circuit which generates an output voltage to be supplied to a USB device connected to a USB connector, a sensing circuit which senses an output voltage or an output state of the power supply circuit, a control circuit which controls the power supply circuit, and a register which stores an output set voltage value associated with the power supply circuit or various types of information. The control circuit outputs a notification signal based on a result of sensing by the sensing circuit to the outside.

A short circuit detection module includes a power unit including a battery for providing a voltage of the battery, a monitoring unit, a switch unit, a heating unit and a control unit. The monitoring unit is connected with the power unit. The switch unit includes a first MOSFET, the monitoring unit is connected with the source electrode of the first MOSFET. The heating unit is connected with the drain electrode of the first MOSFET, the drain electrode of the first MOSFET transmits a heating current to the heating unit. A heating voltage is generated at an output terminal of the short circuit detection module. The control unit is connected with and controls the power unit, the monitoring unit, the switch unit and the heating unit. When the heating voltage is greater than a critical value of the heating voltage, the control unit turns off the first MOSFET.