Abstract: A current balancing circuit includes a voltage detecting circuit having a detecting diode, and a control switch having an input part and an output part, the input part is coupled in series to the detecting diode and disposed opposite to the detecting diode for detecting abnormal and/or reverse voltages and for preventing electric circuits or facilities from being damaged by the abnormal and/or reverse voltages. The input part may be a photodiode having a positive or negative side coupled to the negative or positive side of the detecting diode. A resistor or a divider diode may be used to protect the voltage detecting circuit.

Abstract: A current balancing circuit includes a voltage detecting circuit having a detecting diode, and a control switch having an input part and an output part, the input part is coupled in series to the detecting diode and disposed opposite to the detecting diode for detecting abnormal and/or reverse voltages and for preventing electric circuits or facilities from being damaged by the abnormal and/or reverse voltages. The input part may be a photodiode having a positive or negative side coupled to the negative or positive side of the detecting diode. A resistor or a divider diode may be used to protect the voltage detecting circuit.

Abstract: An electric current balancing device includes an inverting circuit having a driving unit and one or more transformers coupled together for outputting an electric current to a load device, a detecting circuit coupled to the inverting circuit for receiving and detecting an electric current of the load device and for stabilizing and sending a stabilized and calibrated electric current to the inverting circuit, and a balancing transformer device having a primary side coupled to the inverting circuit for receiving the calibrated electric current from the inverting circuit, and a secondary side coupled to the load device for comparing an electric current of the load device with the calibrated electric current from the inverting circuit and for controlling the load device.

Abstract: An electric current balancing device includes an inverting circuit having a driving unit and one or more transformers coupled together for outputting an electric current to a load device, a detecting circuit coupled to the inverting circuit for receiving and detecting an electric current of the load device and for stabilizing and sending a stabilized and calibrated electric current to the inverting circuit, and a balancing transformer device having a primary side coupled to the inverting circuit for receiving the calibrated electric current from the inverting circuit, and a secondary side coupled to the load device for comparing an electric current of the load device with the calibrated electric current from the inverting circuit and for controlling the load device.

Abstract: A lamp actuating device includes a number of lamps each having an output terminal, an inverter circuit coupled to the lamps to energize the lamps, a low frequency control unit coupled to the inverter circuit, to set an average value for the level of the effective lamp current at the output terminals of the lamps and to control the inverter circuit, a number of current detecting devices coupled between the lamps and the low frequency control devices to obtain and send the average current value at the output terminals of the lamps to the low frequency control unit. A number of regulating devices are coupled between the lamps and the low frequency control unit, to maintain each lamp at the predetermined average value of the effective current.

Abstract: A lamp actuating device includes a number of lamps each having an output terminal, an inverter circuit coupled to the lamps to convert electric power and to energize the lamps, a low frequency control unit coupled to the inverter circuit, to set an average current value at the output terminals of the lamps and to control the inverter circuit, a number of current detecting units coupled between the lamps and the low frequency control unit to obtain and send the average current value at the output terminals of the lamps to the low frequency control unit. A number of regulating devices are coupled between the lamps and the low frequency control unit respectively, to control electric power through the lamps, and to maintain each of the lamps at the average current value.

Abstract: A lamp actuating device includes a number of lamps each having an output terminal, an inverter circuit coupled to the lamps to energize the lamps, a low frequency control unit coupled to the inverter circuit, to set an average value for the level of the effective lamp current at the output terminals of the lamps and to control the inverter circuit, a number of current detecting devices coupled between the lamps and the low frequency control devices to obtain and send the average current value at the output terminals of the lamps to the low frequency control unit. A number of regulating devices are coupled between the lamps and the low frequency control unit, to maintain each lamp at the predetermined average value of the effective current.

Abstract: A lamp actuating device includes a number of lamps each having an output terminal, an inverter circuit coupled to the lamps to convert electric power and to energize the lamps, a low frequency control unit coupled to the inverter circuit, to set an average current value at the output terminals of the lamps and to control the inverter circuit, a number of current detecting units coupled between the lamps and the low frequency control unit to obtain and send the average current value at the output terminals of the lamps to the low frequency control unit. A number of regulating devices are coupled between the lamps and the low frequency control unit respectively, to control electric power through the lamps, and to maintain each of the lamps at the average current value.