Abstract: A controlling method and device for a wireless power transfer system, wherein the wireless power transfer system includes a transmitting component and a receiving component, and further includes a contactless transformer & compensation (CT&C) circuit, and the controlling method includes: obtaining positional relationship information of the transmitting component and the receiving component; adjusting the number of coil turns of the transmitting component based on the positional relationship information, and making conditions of a CT&C voltage gain characteristic and an input impedance characteristic after a charging inverter bridge of the wireless power transfer system meet a charging condition. The abovementioned technical solution can provide a protection for a stable operation of the wireless power transfer system with a non-mechanical adjusting device, and the wireless charging can be achieved without using a mechanical adjusting device to align and range.

Abstract: A controlling method and device for a wireless power transfer system, wherein the wireless power transfer system includes a transmitting component and a receiving component, and further includes a contactless transformer & compensation (CT&C) circuit, and the controlling method includes: obtaining positional relationship information of the transmitting component and the receiving component; adjusting the number of coil turns of the transmitting component based on the positional relationship information, and making conditions of a CT&C voltage gain characteristic and an input impedance characteristic after a charging inverter bridge of the wireless power transfer system meet a charging condition.

Abstract: The present invention relates to a container's spray head, and in particular, to a convenient and laborsaving pressure activated spray head, which comprises a main body, an air pressure tube, a pressure rod, a spray tube and a connecting sleeve, the air pressure tube is inserted into and disposed in the main body; the pressure rod that is hinged to the main body presses against the upper surface of a pressure head of the air pressure tube; a baffle disposed on the air pressure tube abuts against the upper surface of the connecting sleeve, and the connecting sleeve is embedded in the main body; the spray tube engages with the pressure head of the air pressure tube and communicates with an inner chamber of the air pressure tube. The present invention adopts lever principle, and it lengthens the arm of the applied force. Under the same reactive torque, the longer the arm is, the smaller the applied force is.