Abstract: Provided are an injection molding machine and an injection molding method. An injection molding machine includes: a plasticizing unit which rotates a screw to plasticize a molding material inside a plastication cylinder, and an injection unit. The injection unit has: a plunger reciprocally moving inside an injection chamber, and an injection driving device reciprocally moving the plunger. By driving the injection driving device to move the plunger backward and forward inside the injection chamber, and driving a rotary driving device to alternately rotate the screw in a normal rotation direction and a reverse rotation direction, the molding material is controlled to reciprocate between the plastication cylinder and the injection chamber.

Abstract: A wave-activated power generation device is disclosed. The device includes a float configured to be capable of floating in the sea; a rotor configured to generate a rotational inertial mass effect; a power generator configured to generate power based on rotation of the rotor; a first elastic body; and a drive part configured to connect the rotor with the float via the first elastic body so as to rotate the rotor along with movement of the float.

Abstract: A wave-activated power generation device is disclosed. The device includes a float configured to be capable of floating in the sea; a rotor configured to generate a rotational inertial mass effect; a power generator configured to generate power based on rotation of the rotor; a first elastic body; and a drive part configured to connect the rotor with the float via the first elastic body so as to rotate the rotor along with movement of the float.

Abstract: In a push-pull output circuit comprising inverters, each using a depletion-type load field-effect transistor (FET) and an enhancement-type driving FET, an intermediate inverter including a depletion-type load FET and an enhancement-type driving FET is added between the input side and output side inverters. The load impedance of the output side inverter is set at a value much smaller than those of the other inverters. The utilization of a power supply voltage is enhanced because of the use of depletion-type FET's and the total current in the circuit is low due to the use of the intermediate inverter.