63results about How to "No need to increase the size" patented technology

The embodiment of the invention discloses a resistance change memory and a preparation method thereof. The resistance change memory comprises a substrate and a plurality of memory units at intervals on the substrate; each memory unit comprises a lower electrode, a resistance change layer and an upper electrode; the lower electrode is positioned on the substrate; the resistance change layer is positioned on the lower electrode; the upper electrode is positioned on the resistance change layer; and the resistance change layer comprises a resistance change material part and at least one doped resistance change part doped with elements for adjusting a resistance state. The invention also discloses a preparation method for the resistance change memory. According to the resistance change memory and the preparation method thereof, the resistance change layer is not made of a single resistance change material, and a plurality of resistance states can be generated according to different voltage in the set operation process of a resistance changer, so that the memory density of the resistance changer is increased; and meanwhile, the size of the resistance changer is not required to be increased.

A three-way core-pulling mechanism of an injection mold comprises an upper doubling plate, a lower doubling plate; the upper doubling plate is provided with a cavity, the lower doubling plate is provided with a through hole, the lower doubling plate is provided with die feet, an upper thimble plate, a lower thimble plate and a thimble, the die feet are provided with a mold core, a plastic part is arranged between the mold core and the cavity, the plastic part is provided with an upper oblique rib, a lower oblique rib and a side panel, the side panel is provided with a side hole, the three-way core-pulling mechanism is characterized in that a controlled distance kerve, an upper oblique chute and oblique spring slots are arranged in the cavity, the upper doubling plate is provided with a controlled distance pull rod connected with a controlled distance pull plate, the controlled distance pull plate is matched with the controlled distance kerve, the upper oblique chute is internally provided with an upper oblique sliding block, the lower part of the upper oblique chute is provided with an upper rib slot matched with the upper oblique rib, baffles are arranged at two sides of the upper oblique sliding block, the oblique spring slots are internally provided with oblique springs of which the upper ends contact the baffles, an oblique guide column is arranged under the cavity, the mold core is provided with a side core-pulling sliding block provided with a side lug and an oblique guide hole, the mold core is internally provided with a lower oblique chute internally provided with a lower oblique sliding block, the upper end of the lower oblique sliding block is matched with the lower oblique rib, an oblique guide slot is arranged in the lower oblique sliding block, one side of the mold core is provided with an oil pumping cylinder connected with a bent pin, and the bent pin is matched with the oblique guide slot.

The invention discloses a gas circuit breaker with a reinforced insulation recovery function. An expansion chamber, a compressed gas chamber, a main nozzle, an auxiliary nozzle, a moving side arc contact and a static side arc contact constitute an arc breaking core component. An arc extinguishing chamber is composed of an inner mixing area and an outer mixing area. Drainage holes of guide cylinders draw insulating gas in the outer mixing area of the arc extinguishing chamber into the inner mixing area of the arc extinguishing chamber, and the insulating gas and arc high-temperature gas are mixed at a first level and cooled in an area closest to a fracture. Drainage holes of a support base draw insulating gas outside the arc extinguishing chamber into the outer mixing area of the arc extinguishing chamber, and the insulating gas and arc gas are mixed at a second level and cooled. Spoilers at exhaust ports reduce the local velocity of high-temperature mixed gas exhausted. A pressure balance hole is arranged in a main contact shielding cover, which reduces the pressure difference between the two sides of the shielding cover. A pressure balance hole is arranged in an insulating cylinder, which reduces the fluctuation of gas pressure inside the insulating cylinder.

Provided is a single-phase inverter input voltage ripple modulation compensation method which comprises the following steps: when a modulation pulse is outputted, an inverter output voltage and a full-bridge inverter circuit input voltage are acquired; the inverter output voltage is processed so that an SPWM modulation pulse signal is acquired; a ripple parameter is extracted from the full-bridge inverter circuit input voltage; and output voltage harmonic waves brought by ripples can be eliminated from the modulation effect after compensation according to each pulse width of the SPWM modulation pulse signal compensated by the ripple parameter. A modulation strategy is compensated only in software so that hardware cost is saved. Besides, the input voltage ripple parameter is compensated directly so that influence of the ripples can be effectively inhibited and output quality of an inverter system is enhanced.