A secondary battery protection apparatus includes a temperature sensitive element having a characteristic value that varies in accordance with a change in temperature of a secondary battery. The secondary battery protection apparatus includes a switching circuit provided in a charge-and-discharge path between a secondary battery and an external device. The secondary battery protection apparatus includes a secondary battery protection circuit configured to control charge and discharge using the switching circuit to protect the secondary battery from temperature. The secondary battery protection circuit includes a comparison circuit configured to compare a voltage against a threshold voltage, the voltage corresponding to the change in the temperature of the secondary battery. The secondary battery protection circuit includes a conversion circuit that is controlled such that a first input of the comparison circuit is electrically coupled to a first terminal of the secondary battery protection circuit.

A semiconductor package includes a die pad and leads extending from the die pad. Each lead has a free end with outer surfaces extending at angles from one another. An electrically conductive plating material covers at least portions of the outer surfaces. A die attached to the die pad is electrically connected to the leads. An insulating layer extends over the leads and the die such that the free ends of the leads are exposed.

A short circuit protection circuit may comprise a first configuration channel line extending from a first connector, a first resistor connected to the first configuration channel line; a voltage divider connected to a junction point on the first configuration channel line, the voltage divider comprising a second resistor and a thermistor, and a field effect transistor (FET) comprising a source, gate, and drain. The thermistor may be connected to a ground line. The drain of the FET may be connected to the first resistor, the source of the FET may be connected to the ground line, and the gate of the FET may be connected to a second junction point between the second resistor and thermistor of the voltage divider.

A gear motor (motor device) comprising a three-phase motor and a terminal box housing a power supply connection terminal for connecting the three phase motor to an alternating current power supply, comprises: a power detection circuit that detects power to be supplied to the three-phase motor; a control unit that executes predetermined control if a load abnormality related to the three-phase motor or a driven device is detected based on power detected by the power detection circuit. The power detection circuit and the control unit are housed in the terminal box.

An overvoltage protection device includes: input terminals; output terminals; at least two overvoltage protection elements for forming staggered protection levels; and at least one longitudinal element electrically connecting an input terminal and an output terminal to conduct an operating current. In order to form a first protection level, a first overvoltage protection device is connected to two input terminals on an input side upstream of the at least one longitudinal element, and, in order to form a second protection level, a second overvoltage protection element is connected to two output terminals on an output side and downstream of the at least one longitudinal element, the at least one longitudinal element influencing a response of the at least two overvoltage protection elements in case of an overvoltage. The at least one longitudinal element is provided with a thermal overload protection device for reducing a possible current flow.

A DC and/or an AC power transmission circuit protection system is for protection of a cabling medium. The circuit protection system includes a power supply, a powered device and a circuit protection module that includes an over-current and/or over-voltage circuit module and/or a heat circuit protector. The protection system is disposed between the power supply and the powered device, and interrupts an electrical current that flows through the cabling medium when the over-current and/or over-voltage circuit module and/or the circuit protector exceeds a predetermined level. There is also provided a method to dispose the circuit protection system and the circuit protection module within the circuit and to interrupt the circuit when over-current and/or over-voltage circuit module and/or heat circuit protector exceeds a predetermined level.

A method of protecting an electric vehicle (EV) charger connector from excessive heat includes monitoring the internal temperature of an electrical connector, the electrical connector having pilot and pilot return signal lines, reducing a voltage between the pilot and pilot return signal lines in response to the internal temperature exceeding a first threshold, and reducing charging current provided through the electrical connector in response to the change in voltage so that the internal temperature exceeding the first threshold will result in a reduction of charging current through the connector.

A battery protection circuit includes: a plurality of pack terminals configured to connect a battery module to an external device; a first fuse element located on a current path between the battery module and the plurality of pack terminals to block a current flow between the battery module and the plurality of pack terminals depending on a voltage applied to a control terminal thereof; a first integrated circuit configured to include a first input terminal and configured to control a voltage outputted to the control terminal of the first fuse element depending on a voltage applied to the first input terminal; and a plurality of thermistors connected in series between a positive electrode of the battery module and a first input terminal of the first integrated circuit and each thermistor of the plurality of thermistors having resistance that is varied depending on a temperature of a corresponding cell among a plurality of cells constituting the battery module.

An electronic system can be used to monitor temperature. The electronic system can include a characterized dielectric located adjacent to a plurality of heat-producing electronic devices. The electronic system can also include a leakage measurement circuit that is electrically connected to the characterized dielectric. The leakage measurement circuit can be configured to measure current leakage through the characterized dielectric. The leakage measurement circuit can also be configured to convert a leakage current measurement into a corresponding output voltage. A response device, electrically connected to the leakage measurement circuit can be configured to, in response to the output voltage exceeding a voltage threshold corresponding to a known temperature, initiate a response action.

A protection circuit (10), a power supply circuit, and a display panel. The protection circuit (10) comprises a feedback circuit (100) and a current adjusting circuit (200). The reaction circuit (100) is used for receiving a supply voltage, adjust the first general resistance thereof according to the temperature of a data drive chip, and generate a reaction voltage according to the supply voltage and the adjusted first resistance. The current adjusting circuit (200) is used for receiving the supply voltage and the reaction voltage, and generate and output a driving current according to the reaction voltage and the supply voltage, the driving current decreasing following a rise in the temperature of the data drive chip; when the driving current is reduced, the thermal energy power consumption of the data drive chip is reduced so as to prevent burnout due to the temperature at the interior thereof being too high.