A continuous-flow heater for heating a liquid includes a fluid-accessible channel arrangement with at least one heating channel configured for heating the liquid with at least one electric heating element arranged therein, an electronic control system configured to control electronic circuit breakers in order to electrically operate the heating element and to control the heat output of the heating element, a flow measuring device electrically connected to the electronic control system and configured to detect the volume flow rate of the liquid flowing through the channel arrangement and to provide a pulsed measurement signal, and a safety circuit connected on the input side to the flow measuring device and on the output side to the electronic control system in order to provide a supply voltage for controlling the electronic circuit breakers depending on whether the volume flow rate is greater than a minimum volume flow rate specification.

A system and method for detecting and isolating an electromagnetic pulse (EMP) along first phase, second phase, and third phase electrical lines electrically connected to a monitored infrastructure so as to protect the monitored infrastructure, the method for detecting and isolating includes a phase unit receiving electric signal data from a sensor electrically connected individually to each of the first phase, second phase, and third phase electrical lines, respectively, upstream of and associated with the monitored infrastructure. The method includes determining if the received electric signal data associated with the respective electrical line is indicative of an E1 component of an EMP and, if so, actuating an isolation subsystem in less than 300 nanoseconds to electrically isolate the respective electrical line against electrical communication with the monitored infrastructure.

A system and method for detecting and isolating an electromagnetic pulse (EMP) along first phase, second phase, and third phase electrical lines electrically connected to a monitored infrastructure so as to protect the monitored infrastructure, the method for detecting and isolating includes a phase unit receiving electric signal data from a sensor electrically connected individually to each of the first phase, second phase, and third phase electrical lines, respectively, upstream of and associated with the monitored infrastructure. The method includes determining if the received electric signal data associated with the respective electrical line is indicative of an E1 component of an EMP and, if so, actuating an isolation subsystem in less than 300 nanoseconds to electrically isolate the respective electrical line against electrical communication with the monitored infrastructure.

A method for protecting an electronic system against a voltage surge, which electronic system is connected to a telecommunication network and includes a control integrated circuit, the method including successively connecting the electronic system to a remote server containing meteorological data; recovering meteorological data originating from the remote server; analyzing by the control circuit the recovered meteorological data to assign thereto a danger level of the current or imminent meteorological event; and, when the assigned danger level exceeds a main warning threshold: sending by the control circuit a warning signal to a display terminal connected to the electronic system; displaying a first warning message on the display terminal from information contained in the warning signal, the first warning message warning a user of the display terminal of a risk of voltage surge due to the current or imminent meteorological event; and electrical isolating a port of the electronic system.

A method for protecting an electronic system against a voltage surge, which electronic system is connected to a telecommunication network and includes a control integrated circuit, the method including successively connecting the electronic system to a remote server containing meteorological data; recovering meteorological data originating from the remote server; analyzing by the control circuit the recovered meteorological data to assign thereto a danger level of the current or imminent meteorological event; and, when the assigned danger level exceeds a main warning threshold: sending by the control circuit a warning signal to a display terminal connected to the electronic system; displaying a first warning message on the display terminal from information contained in the warning signal, the first warning message warning a user of the display terminal of a risk of voltage surge due to the current or imminent meteorological event; and electrical isolating a port of the electronic system.

An intelligent fuseless switch includes a moving contactor, a switch, a base, and a vibration detection module. When the vibration detection module detects that vibration intensity is higher than a preset value, the electromagnetic trip device is triggered by the base to push the moving contactor to open a circuit. The power cannot be introduced into the house. This automatic power-off mode has an active protection effect. After the vibration detection module is installed, if it needs to be repaired, it can be directly replaced without removing the circuit breaker, thereby reducing the difficulty of maintenance greatly.

An intelligent fuseless switch includes a moving contactor, a switch, a base, and a vibration detection module. When the vibration detection module detects that vibration intensity is higher than a preset value, the electromagnetic trip device is triggered by the base to push the moving contactor to open a circuit. The power cannot be introduced into the house. This automatic power-off mode has an active protection effect. After the vibration detection module is installed, if it needs to be repaired, it can be directly replaced without removing the circuit breaker, thereby reducing the difficulty of maintenance greatly.

A power supply control device that includes a switch control unit that is configured to switch on and off a first switch and a second switch and receive a supply of power from a battery, the first switch and the second switch being respectively provided in a plurality of power supply paths through which power is supplied from one end of a battery to one end of a first load and one end of a second load; an output terminal from which current that flows from the battery via the switch control unit is output; a diode whose anode is connected to the output terminal, and whose cathode is connected to one end of the second load; an opening detection circuit; and a voltage detection circuit.

A receptacle includes an outlet, an interruption mechanism structured to activate to de-energize the outlet, a temperature sensing circuit including a resistor and a thermistor arranged as a voltage divider, wherein the thermistor has a resistance proportional to temperature, a comparator circuit structured to compare an output of the temperature sensing circuit to a predetermined reference voltage and to selectively output a signal based on the comparison of the output of the temperature sensing circuit and the predetermined reference voltage. The interruption mechanism is structured to activate to de-energize the outlet in response to the comparator circuit outputting the signal.

An impact protection controller for an electric height-adjustable desk. The controller comprises an MCU, a motor drive circuit, a motor current sampling circuit, a current amplifier circuit, a Hall pulse generator, and a Hall filter. The MCU controls the motor drive circuit. A signal transmitted by the Hall pulse generator is sent to the MCU via the Hall filter. A motor current is sampled by the motor current sampling circuit, and the result is sent to the MCU via the current amplifier circuit to detect a change of the current. The controller further comprises a shock switch provided outside of and connected to the MCU, or provided inside of the MCU. The present invention combines current detection and shock detection to improve sensitivity and reliability of impact protection.