Abstract: The present invention provides a switch that is equipped with a driving device for establishing electrical connection and adapted to a power supplying apparatus, and a power supplying apparatus provided with the same. The power supplying apparatus has a main body, an output port, a voltage-selecting circuit and a switch for commanding the voltage selecting circuit to select the output voltage that is to be output via the output port. The switch has a plurality of resilient conductive terminals and at least one driving device. The insertion of a driving device will selectively establish electrical connection among some of the resilient conductive terminals, enabling the switch to form a circuit for adjusting the output voltage of the power supplying apparatus.

Abstract: A voltage transformer with mechanically actuated voltage-selected switch provides an input voltage pass through a voltage transformation unit, wherein the unit is disposed in the casing and its both ends are electrically connected to the input port and output port respectively, and transforms this input voltage into the predetermined output voltages corresponding to the selective switches according to selection of the mechanically actuated voltage-selected switch.

Abstract: The present invention provides a switch that is equipped with a driving device for establishing electrical connection and adapted to a power supplying apparatus, and a power supplying apparatus provided with the same. The power supplying apparatus has a main body, an output port, a voltage-selecting circuit and a switch for commanding the voltage selecting circuit to select the output voltage that is to be output via the output port. The switch has a plurality of resilient conductive terminals and at least one driving device. The insertion of a driving device will selectively establish electrical connection among some of the resilient conductive terminals, enabling the switch to form a circuit for adjusting the output voltage of the power supplying apparatus.

Abstract: A voltage transformer with a sequentially switchable voltage selection circuit is provided for converting input electrical energy through the sequentially switchable voltage selection circuit, which is arranged within the transformer body with its two ends electrically connected to an input port and an output port respectively, into one of a plurality of output voltage values and outputting the electrical energy. When it is desired to regulate an output voltage, a connection device must be plugged in a socket portion on the transformer body to initialize a micro control unit through feedback to change a voltage value sent to a voltage transformation unit, and in turn change the voltage of output electrical energy until a display device displays an ideal output voltage value. Then, the user removes the connection device, and the voltage value of the input electrical energy is converted into corresponding to the selected predetermined voltage value to output the electrical energy.

Abstract: The present invention relates to an output voltage feedback device for being used in a power supplying apparatus and a power supplying apparatus provided with the same. The power supplying apparatus provides electrical power via a wire set which includes a high level wire and a low level wire. The output voltage feedback device is provided with a voltage sensor and feedback unit for determining the voltage difference between the high level wire and the low level wire and the resultant measurement is transmitted back to the converter main body via the wire set in the form of a distinct electrical signal. The output voltage feedback device according to the invention can accurately determine the output voltage from the power supplying apparatus and, in case of occurring an output fault, interrupt the supply of power or enable an automatic compensation to reduce damage.

Abstract: A voltage transformer with mechanically actuated voltage-selected switch provides an input voltage pass through a voltage transformation unit, wherein the unit is disposed in the casing and its both ends are electrically connected to the input port and output port respectively, and transforms this input voltage into the predetermined output voltages corresponding to said selective switches according to selection of the mechanically actuated voltage-selected switch.