Abstract: A glass panel device having a switchable glass panel and a control unit for controlling the switchable glass panel with a control voltage is provided, where the control voltage is composed of a first AC voltage signal and a second AC voltage signal, where the first AC voltage signal is phase-shifted by 180° with respect to the second AC voltage signal; the control unit has a first analogue amplifier for amplifying the first AC voltage signal comprising two first power switches and a second analogue amplifier for amplifying the second AC voltage signal comprising two second power switches, where each one power switch of the two analogue amplifiers together form an upper voltage circuit and the respective other power switches of the two analogue amplifiers together form a lower voltage circuit.

Abstract: A protective circuit includes an input that provides a first supply voltage, a voltage regulator that provides a second supply voltage based on the first supply voltage, a measuring device that identifies an impedance of the voltage regulator, and a self-locking switching element configured to connect the first supply voltage with the voltage regulator if an impedance of the voltage regulator exceeds a predefined impedance value.

Abstract: A system circuit board configured to be supplied by at least one power supply unit, with an operating voltage in an operating state and a stand-by voltage in at least one stand-by state, the system circuit board includes at least one connection device for at least one extension card, wherein the connection device is configured to provide at least one first card voltage on the basis of the operating voltage; at least one switching element arranged on the system circuit board and configured to disconnect the at least one connection device from the operating voltage; and a control device arranged on the system circuit board, and configured to identify a type of a connected power supply unit and send a switching signal to the switching element depending on the identified type.

Abstract: A protective circuit includes an input that provides a first supply voltage, a voltage regulator that provides a second supply voltage based on the first supply voltage, a measuring device that identifies an impedance of the voltage regulator, and a self-locking switching element configured to connect the first supply voltage with the voltage regulator if an impedance of the voltage regulator exceeds a predefined impedance value.

Abstract: A computer system includes power supply providing at least one secondary supply voltage to generate operating voltage and a standby voltage; a system board with a plurality of system components arranged thereon; at least one sequencing microcontroller arranged on the system board for time-controlled provision of at least one of the operating voltage and the standby voltage to the plurality of system components; and at least one button that switches the computer system from a standby state to an operating state; wherein the sequencing microcontroller is configured, when the button is held for a first predefined time period indicating a forced switching of the computer system from the operating state to the standby state, to disconnect the plurality of system components from both the operating voltage and the standby voltage for a second predefined time period so that each of the plurality of system components is reset.

Abstract: A printed circuit board includes at least one multipole pin header with at least one first pin contact and a second pin contact arranged adjacent to the first pin contact and connected to a first predetermined reference potential, at least one evaluation circuit electrically connected to the first pin contact and arranged for this purpose, detecting the application of a predetermined voltage level at the first pin contact, and a safety circuit electrically connected to the at least one evaluation circuit, which is arranged to prevent a complete voltage supply to the printed circuit board when the evaluation circuit detects the application of the predetermined voltage level at the first pin contact.

Abstract: A system circuit board configured to be supplied by at least one power supply unit, with an operating voltage in an operating state and a stand-by voltage in at least one stand-by state, the system circuit board includes at least one connection device for at least one extension card, wherein the connection device is configured to provide at least one first card voltage on the basis of the operating voltage; at least one switching element arranged on the system circuit board and configured to disconnect the at least one connection device from the operating voltage; and a control device arranged on the system circuit board, and configured to identify a type of a connected power supply unit and send a switching signal to the switching element depending on the identified type.

Abstract: A computer system includes power supply providing at least one secondary supply voltage to generate operating voltage and a standby voltage; a system board with a plurality of system components arranged thereon; at least one sequencing microcontroller arranged on the system board for time-controlled provision of at least one of the operating voltage and the standby voltage to the plurality of system components; and at least one button that switches the computer system from a standby state to an operating state; wherein the sequencing microcontroller is configured, when the button is held for a first predefined time period indicating a forced switching of the computer system from the operating state to the standby state, to disconnect the plurality of system components from both the operating voltage and the standby voltage for a second predefined time period so that each of the plurality of system components is reset.

Abstract: An energy supply assembly includes a supply input that provides a first voltage VIN with a maximum output current; a first voltage converter connected to the supply input to convert the first voltage VIN into a second voltage; an intermediate storage element connected to the first voltage converter to temporarily store electric energy of the second voltage; at least one first supply output connected to the supply input to provide the first voltage VOUT1; at least one second supply output connected to the intermediate storage element to provide a further supply voltage VOUT2; a measuring device to measure a current received via the supply input and/or a current output via the first supply output; and a control circuit that actuates the first voltage converter, wherein the control circuit is configured to actuate the first voltage converter on the basis of the measured current such that the current output via the at least one first supply output and the current received by the first voltage converter together d

Abstract: A computer system having at least one interface includes at least one voltage monitoring device, and at least one interface control device including a signaling circuit, wherein the interface control device is configured to restrict a power output via the interface to a predetermined power level if the voltage monitoring device detects a drop of a supply voltage of the computer system below a first threshold value, and the signaling circuit is configured to signalize the restriction of the power output to a peripheral device.

Abstract: A computer system including a power supply unit that generates at least one DC supply voltage (Vcc, Vaux) based on an AC supply voltage (VAC), and a system board electrically connected to the power supply unit, the system board comprising a sequencing microcontroller that selectively activates further components of the system board, the further components comprising a chipset, wherein the sequencing microcontroller monitors the state of at least one control signal of the power supply unit and/or the system board to detect a shutdown and a successful reboot of the system board and, after a shutdown of the system board is detected, signals a reboot command to at least the chipset at predetermined intervals until a successful reboot of the system board is detected.

Abstract: An energy supply assembly includes a supply input that provides a first voltage VIN with a maximum output current; a first voltage converter connected to the supply input to convert the first voltage VIN into a second voltage; an intermediate storage element connected to the first voltage converter to temporarily store electric energy of the second voltage; at least one first supply output connected to the supply input to provide the first voltage VOUT1; at least one second supply output connected to the intermediate storage element to provide a further supply voltage VOUT2; a measuring device to measure a current received via the supply input and/or a current output via the first supply output; and a control circuit that actuates the first voltage converter, wherein the control circuit is configured to actuate the first voltage converter on the basis of the measured current such that the current output via the at least one first supply output and the current received by the first voltage converter together d

Abstract: A computer system that includes a power supply unit that generates at least one secondary supply voltage (Vcc) and an auxiliary voltage (Vaux) based on an AC supply voltage (VAC), and a system board electrically connected to the power supply unit, the system board comprising a sequencing microcontroller that selectively activates further components of the system board, the further components comprising a chipset, wherein the sequencing microcontroller is configured to monitor the state of at least one control signal of the power supply unit and/or the system board to detect a failure of the AC supply voltage (VAC) and signal the failure of the AC supply voltage (VAC) to at least the chipset.

Abstract: A motherboard for a computer system that electrically connected to an acoustic transmitter that outputs acoustic signals includes a first sound generator circuit configured to generate a first control signal for the acoustic transmitter; a second sound generator circuit configured to generate a second control signal for the acoustic transmitter; and a logic circuit electrically coupled to the first sound generator circuit via a first signal line and to the second sound generator circuit via a second signal line and configured to transfer the first control signal or the second control signal to the acoustic transmitter.

Abstract: A computer system including a power supply unit that generates at least one DC supply voltage (Vcc, Vaux) based on an AC supply voltage (VAC), and a system board electrically connected to the power supply unit, the system board comprising a sequencing microcontroller that selectively activates further components of the system board, the further components comprising a chipset, wherein the sequencing microcontroller monitors the state of at least one control signal of the power supply unit and/or the system board to detect a shutdown and a successful reboot of the system board and, after a shutdown of the system board is detected, signals a reboot command to at least the chipset at predetermined intervals until a successful reboot of the system board is detected.

Abstract: A computer system that includes a power supply unit that generates at least one secondary supply voltage (Vcc) and an auxiliary voltage (Vaux) based on an AC supply voltage (VAC), and a system board electrically connected to the power supply unit, the system board comprising a sequencing microcontroller that selectively activates further components of the system board, the further components comprising a chipset, wherein the sequencing microcontroller is configured to monitor the state of at least one control signal of the power supply unit and/or the system board to detect a failure of the AC supply voltage (VAC) and signal the failure of the AC supply voltage (VAC) to at least the chipset.