摘要:
The invention discloses a standby control circuit and a display device. The standby control circuit includes a standby module, at least one power board, and a transistor switch control module comprising at least one transistor switch whose number is equal to that of the at least one power board, each transistor switch is connected between one power board and a mains supply input terminal, the standby module is configured to generate a trigger signal and send the generated trigger signal to each transistor switch, and each transistor switch is configured to be turned on upon receipt of the trigger signal sent from the standby module so as to connect the power board connected thereto with the mains supply input terminal.
摘要:
In one embodiment, a switching circuit includes a first switch comprising one or more transistors operably coupled in series with a first terminal, wherein each of the one or more transistors has a corresponding diode, a drain of each of the one or more transistors being operably coupled to a cathode of the corresponding diode; and a second switch comprising one or more transistors operably coupled in series with a second terminal, wherein each of the one or more transistors has a corresponding diode, a drain of each of the one or more transistors being operably coupled to a cathode of the corresponding diode; wherein a source of the one or more transistors of the first switch is operably coupled to a source of the one or more transistors of the second switch.
摘要:
Various systems may benefit from interfaces for handling multiple types of inputs. For example, a device with a trigger input from an external device may benefit from an isolated logic level trigger that is capable of addressing multiple types and values of voltage. An apparatus can include an input configured to receive an external trigger input signal having a trigger input voltage. The apparatus can also include circuitry configured to automatically adjust the trigger input voltage to a value configured to be compatible with a provided attached system. A working range of the trigger input voltage can exceed a compatible working range of the provided attached system.
摘要:
In one embodiment, the invention can be a switching circuit, the switching circuit including a passive switch coupled to a first switch terminal; a driving switch coupled in series with the passive switch and a second switch terminal, the driving switch configured to turn the passive switch on and off; a power source configured to provide power to the passive switch and the driving switch; and a monitoring circuit configured to receive an indication that a switching circuit voltage exceeds a predetermined amount and, in response, reduce the power provided to the driving switch; or receive an indication that a switching circuit current exceeds a predetermined amount and, in response, reduce the power provided to the driving switch.
摘要:
Disclosed are an apparatus and a method for transmitting an analog signal, and an analog signal multiplexer. The apparatus comprises a photocoupler to receive an input analog signal and transform the input analog signal into an output analog signal, which varies with the input analog signal in a manner of non-linearity. The apparatus further comprises a non-linearity correcting unit to receive the output analog signal and correct the non-linearity to output a corrected output analog signal. An analog signal may be transmitted with a photocoupler.
摘要:
In one embodiment, the invention can be a switching circuit, the switching circuit including a passive switch coupled to a first switch terminal; a driving switch coupled in series with the passive switch and a second switch terminal, the driving switch configured to turn the passive switch on and off; a power source configured to provide power to the passive switch and the driving switch; and a monitoring circuit configured to receive an indication that a switching circuit voltage exceeds a predetermined amount and, in response, reduce the power provided to the driving switch; or receive an indication that a switching circuit current exceeds a predetermined amount and, in response, reduce the power provided to the driving switch.
摘要:
Disclosed are an apparatus and a method for transmitting an analog signal, and an analog signal multiplexer. The apparatus comprises a photocoupler to receive an input analog signal and transform the input analog signal into an output analog signal, which varies with the input analog signal in a manner of non-linearity. The apparatus further comprises a non-linearity correcting unit to receive the output analog signal and correct the non-linearity to output a corrected output analog signal. An analog signal may be transmitted with a photocoupler.
摘要:
A circuit arrangement having an overload protection for galvanic isolation units for galvanic isolation from one another is described. The galvanic isolation units each have two regions galvanically isolated from one another and one of the regions has a control signal terminal and a base terminal. The circuit arrangement have at least two such galvanic isolation units. From at least two of the galvanic isolation units the base terminals of a region are electrically conductively connected to one another and are connected to a base potential via a common fuse connected in series.
摘要:
A solar photovoltaic module safety shutdown system includes a module-on switch coupled with a first circuit having a photovoltaic module and a System-Monitor device. The System-Monitor device couples to the module-on switch through a second circuit and to the photovoltaic module and an AC main panelboard through the first circuit. A module-off switch operatively couples with the photovoltaic module and the module-on switch. The System-Monitor device supplies a System-on signal to the module-on switch through the second circuit. The module-on switch disables the photovoltaic module by shorting it or disconnecting it from the first circuit in response to the System-On signal not being received by the module-on switch from the System-Monitor device. The module-off switch disables the photovoltaic module by shorting it in response to the System-On signal not being received by the module-on switch when the photovoltaic module is irradiated with light.
摘要:
The current measurement device with electrical isolation comprises an input signal connected to an electrical shunt, an output of an output signal, and signal transfer means with electrical isolation receiving the input signal and supplying said output signal. The transfer means comprise at least one signal transformer having at least one primary winding to receive a primary signal representative of said input signal, switching means to switch the input signal and supply the latter to said primary winding, and electrically isolated control means of the switching means comprising a control input receiving control signals during switching periods. A trip unit and an electrical circuit breaker comprises one such current measurement device and a processing unit processing electrical protection functions.