There is disclosed new topology for an Electronic Voltage Regulator (EVR) which can apply additive or subtractive (aka boost or buck) voltages to compensate for an increase or decrease in system voltages. This regulator employs a ladder of power capacitors...

This application discloses a voltage regulation module, a charging module, and a charging pile that may be used to charge an electric vehicle, to regulate an output voltage in a wide range, and implement seamless switching without power-off in a process of...

An electric power tool (1) includes a power supply (120), a motor (30) capable of being driven in a forward rotation mode or a reverse rotation mode, and a voltage step-up unit (100) capable of performing a voltage step-up operation to raise a voltage supp...

The converter has a common input connected to a direct-current (DC) voltage source (10) for supplying input voltage. Multiple outputs (24a, 24b) are supplied with DC voltage whose value is lesser than or equal to a value of the input voltage. The outputs a...

The converter has inputs to which direct current (DC) power sources (10a-10c) is connectable, and a common output (24) at which DC voltage is provided, where a value of the DC voltage is larger than that of input voltages. The output is connected with the ...

An inductive load drive device is disclosed comprising: a monitor circuit that inputs the drive-side terminal voltage of an inductive load (ZL) and, when a drive current of the inductive load (ZL) is cut off or rapidly decreased, outputs an operation confi...

The present invention provides a battery-driven electronic device for which a long time use of the battery can be achieved and mobile communications equipment such as a portable telephone. Even if the time at which the output voltage of a battery 201 becom...