Abstract: To realize active control ground that sets inverted output of an amplification circuit to ground with simple configuration. A DAP 1 comprises a positive side DAC 7 that D/A-converts digital audio data into analog audio data, a positive side amplification circuit 9 that amplifies the analog audio data that the DAC 7 D/A-converts, a negative side DAC 8 that D/A-converts the digital audio data into the analog audio data, and a negative side amplification circuit 10 that amplifies the analog audio data that the DAC 8 D/A-converts, and a CPU 2. The CPU 2 mutes the DAC 8 in case of an ACG mode that sets output of the amplification circuit 10 to ground.

Abstract: To reduce signal output and wiring to a D/A converter (DAC). A DAP 1 comprises a DAC 7 that D/A-converts LR 2 channels digital audio data into LR 2 channels analog audio data, an amplification circuit 9 that amplifies the LR 2 channels analog audio data that the DAC 7 D/A-converts, a DAC 8 that D/A-converts the LR 2 channels digital audio data into the LR 2 channels analog audio data, and an amplification circuit 10 that amplifies inverted LR 2 channels analog audio data that the LR 2 channels analog audio data that the DAC 8 D/A-converts is inverted.

Abstract: In a fluid pressure cylinder, a piston is displaced in an axial direction under the action of a pressure fluid. A circular protrusion, which projects toward the piston along an axial direction of the cylinder tube, is formed on an inner end surface of a collar member constituting part of the fluid pressure cylinder, a concavity, which can be fitted externally over the circular protrusion, is formed on the piston, and an annular groove is formed on an inner circumferential edge of an end plate. By the piston coming into contact with the end plate, a pressure receiving chamber is formed between the piston and the annular groove, together with an opening of a second port on an inner side of the cylinder tube being closed to a maximum of 90%.

Abstract: In a fluid pressure cylinder, a piston is displaced in an axial direction under the action of a pressure fluid. A circular protrusion, which projects toward the piston along an axial direction of the cylinder tube, is formed on an inner end surface of a collar member constituting part of the fluid pressure cylinder, a concavity, which can be fitted externally over the circular protrusion, is formed on the piston, and an annular groove is formed on an inner circumferential edge of an end plate. By the piston coming into contact with the end plate, a pressure receiving chamber is formed between the piston and the annular groove, together with an opening of a second port on an inner side of the cylinder tube being closed to a maximum of 90%.

Abstract: The piston 4 comprises a fixing ring 8 mounted on a piston rod 6, and a piston body 10 fixed to the fixing ring 8. The fixing ring 8 is comprised of two semi-circular plated members 8A, 8B having plural threaded holes 8a for bolt-fastening of the piston body 10. When they are abutted against each other and formed into a circular-annular shape, a hole portion 8c which is to be tightly fitted in a fixing groove 6a of the piston rod 6 is formed. The piston body 10 has a hole portion 10a which is to be fitted over the piston rod 6, and plural bolt holes 10c corresponding to the threaded holes 8a. Moreover, the piston body 10 has a concave portion 10d on a side of one surface thereof, in which the fixing ring 8 is fitted in an embedded state.

Abstract: The piston 4 comprises a fixing ring 8 mounted on a piston rod 6, and a piston body 10 fixed to the fixing ring 8. The fixing ring 8 is comprised of two semi-circular plated members 8A, 8B having plural threaded holes 8a for bolt-fastening of the piston body 10. When they are abutted against each other and formed into a circular-annular shape, a hole portion 8c which is to be tightly fitted in a fixing groove 6a of the piston rod 6 is formed. The piston body 10 has a hole portion 10a which is to be fitted over the piston rod 6, and plural bolt holes 10c corresponding to the threaded holes 8a. Moreover, the piston body 10 has a concave portion 10d on a side of one surface thereof, in which the fixing ring 8 is fitted in an embedded state.