39results about How to "No increase in volume" patented technology

The folded collapsed boxes containing substantially no open gaps are provided. A plurality of different size folded collapsed boxes can be bundled together to yield a display that has the maximum number of folded collapsed boxes displayed thus conserving space.

The present invention provides a lateral double-diffusion transistor, the main part region of the lateral double-diffusion transistor includes a first transistor, a second transistor and a first ESD device arranged between the first transistor and the second transistor; the first transistor A transistor and a second transistor have a common source terminal, a common drain terminal, a common gate terminal and a common body terminal; the first ESD device includes a cathode connected to the common gate terminal , and two positive poles arranged on the left and right sides of the negative pole, the two positive poles are connected to the common source terminal; the secondary part area includes a second ESD device, and the input of the second ESD device The terminal is connected to the common gate terminal, and the output terminal is grounded. The invention can overcome the damage caused by non-uniform turn-on of the device when ESD surges from the drain end in the prior art, so as to improve the ESD prevention capability of the device.

The invention relates to an anti-icing starter electromagnetic switch with a steel wire strand contact. The switch is characterized in that a through hole is formed in the middle of a movable contact piece, the lower end of a movable contact rod penetrates through the through hole of the movable contact piece and prevents the movable contact piece from being separated from the movable contact rod by means of torsion spring limiting, the movable contact rod between an annular limiting boss and the movable contact piece is sleeved with a pressure spring, two static contacts are additionally arranged on the bottom face in a static contact base, the static contacts and binding posts correspond one to one and are connected with steel wire strands, the two ends of the movable contact piece correspond to the upper surfaces of the two static contacts, and each binding post is a hexagonal bolt or composed of a screw and a radiator on the top of the screw. The icing problem of a starter switch contact is fundamentally solved, and the switch is simple in structure, small in size, reliable to use and wide in application range.

The invention relates to an electric measuring tape which comprises a measuring tape shell, a measuring tape core disc and a motor, wherein the measuring tape shell is provided with a containing space; the measuring tape core disc is rotatablely arranged inside the measuring tape shell and wound with a measuring tape belt; and the motor is also positioned inside the measuring tape shell and is linked with the measuring tape core disc by a transmission mechanism so as to stretch and contract the measuring tape from the measuring tape shell. The electric measuring tape is characterized in that the peripheral surface of the measuring tape core disc is provided with an automatic clamping mechanism which forces the measuring tape belt to be compactly wound on the measuring tape core disc all the time. Compared with the prior art, the electric measuring tape has the advantages that as the automatic clamping mechanism which forces the measuring tape belt to be compactly wound on the measuring tape core disc all the time is added, the phenomenon of expanded belt can be avoided, the probability of damaging the measuring tape belt can be reduced, and the measuring tape is ensured to be operated normally.

The invention discloses a linear power amplifying circuit based on analog predistortion, which comprises sequentially connected: a preamplifier, a first temperature-controlled attenuator, an analog predistorter, a second temperature-controlled attenuator, a push-pull amplifier, and a final stage high power amplifier. The invention also discloses a method using the circuit, by adding an analog predistorter circuit with a relatively simple topology to generate a predistortion signal to balance the distorted signal of the power amplifier, and by adjusting the power tube of the push-pull amplifier and the final high-power amplifier The matching circuit and bias voltage make the two power tubes complement each other in amplitude and phase to achieve the effect of pre-distortion, so that the RF output signal can achieve better linearity. The invention has the advantages of simple circuit form, high working efficiency, small occupied PCB area and low cost, and is very suitable for multi-carrier linear power amplifier circuits of TD-SCDMA base stations and repeater systems.

The invention relates to a food processor, comprising an external cup body with an opening at the top and a cup cover covering the mouth of the external cup body in a movable way; wherein, the bottom of the cup cover is provided with an output end which can be driven to rotate by a motor, the cup cover is provided with a food feed inlet, a supporting shaft is fixed at the bottom of the inner wallof the external cup body. The food processor is characterized in that: the food processor further comprises an internal cup, the bottom of the internal cup is provided with a vasiform orifice extending toward the inner axial direction, the supporting shaft is held in the vasiform orifice, an inner tool bit is sheathed on the pipe wall of the vasiform orifice, the upper part of the inner tool bit is connected with the output end in a dismantled and assembled way and can rotate under the drive of the output end, while the food feed inlet is arranged at the position corresponding to the mouth ofthe internal cup. The food processor has the advantages that: users can change the cup for holding food according to the amount of the processed food, and one cup cover is shared, the internal cup can be put outside the external cup, and the volume of the whole body is not increased, thus facilitating packaging, carrying and transporting.