8results about How to "Small working current" patented technology

This invention discloses a high-mobility spin field-effect transistor (SFET), comprising a source electrode, a drain electrode, a gate electrode, a semiconductor channel, and a substrate. Compared to existing SFETs based on a single semiconductor channel, this semiconductor channel structure offers advantages such as tunable band structure, high mobility, tunable carrier concentration and type, and long spin diffusion length. Compared to traditional substrate-based SFETs, this invention introduces a substrate with piezoelectric properties, allowing for the modulation of carrier spin transport within the semiconductor channel through the surface polarization electric field of the substrate. This effectively reduces the turn-on or turn-off voltage and improves gate control. Compared to existing SFET fabrication processes, this invention optimizes the crystal quality of the spin tunneling layer, increases carrier spin polarization, thereby improving the device's on / off ratio and reducing operating current.

The utility model relates to an ion array charging device and an electrostatic filtering device. The ion array charging device comprises a plurality of emission electrodes and a plurality of guide electrodes, and the emission electrodes and the guide electrodes are alternately arranged in parallel at intervals. Potential difference exists between the emission electrodes and the guide electrodes, at least one emission electrode is a needle row, the needle row comprises a plurality of conductive needle-shaped materials which are arranged at intervals, and at least one guide electrode is a conductive material without a tip. Therefore, the high-power lithium ion battery has relatively good charging capability, can reduce working current, inhibits ozone generation, and prolongs the service life of a product.

The invention provides a short-circuit protection circuit, a power circuit and power electronic equipment. The short-circuit protection circuit can comprise a voltage dividing module, a voltage stabilizing module and a judging module. The voltage dividing module is used for outputting working current to the voltage stabilizing module according to the first working voltage. The voltage stabilization module is used for outputting a second working voltage to the judgment module according to the working current. The judgment module is used for outputting a short-circuit protection signal according to the second working voltage. According to the short-circuit protection circuit, the voltage stabilizing module is arranged to control the short-circuit protection time, compared with the prior art that the short-circuit protection time is controlled by adopting a clock signal, the cost of the short-circuit protection circuit is greatly reduced, and short-circuit protection false triggering of the driven power tube in the opening transient state can be thoroughly avoided; and the reliability of the short-circuit protection circuit is improved.

The application is suitable for the technical field of switching power converter, and provides a negative voltage charge pump circuit and a switching power converter. The negative voltage charge pump circuit adds a clock modulation module, a reference voltage generation module, a comparison module, a fourth driving module, a fifth power tube, a sixth power tube and a seventh power tube on the existing charge pump. When the negative voltage charge pump circuit enters a light load working condition, the large-size power tube and its driving module are closed, only the small-size power tube is kept working, and the small-size power tube automatically judges whether to work according to the absolute value of the output voltage, so that the working current of the negative voltage charge pump circuit is greatly reduced, and the conversion efficiency of the negative voltage charge pump circuit in the light load is improved. At the same time, the pulse width modulation processing is carried out by means of the narrow pulse modulation unit in the clock modulation module, the clock signal for driving the small-size power tube is optimized, and the circuit power consumption in the light load is further reduced.

This utility model discloses a current-output type fuel level sensor, comprising: a level sensing unit including a capacitor, the capacitor comprising an outer tube and an inner tube coaxially arranged, with a gap between the outer tube and the inner tube; and a signal processing circuit unit including a C-V conversion circuit and a V-I conversion circuit. The C-V conversion circuit converts the capacitance value between the capacitor and a reference capacitor into a voltage signal, and the V-I conversion circuit converts the voltage signal output by the C-V conversion circuit into a current signal. This utility model's level sensor senses the fuel level by using a cylindrical capacitor formed by two layers of metal tubes, and then converts the capacitor capacitance value into a two-wire current signal output through an internal conversion circuit. Using direct current as the signal transmission method, it is not affected by the impedance and parasitic capacitance of the measuring cable, and features low operating current, low power consumption, light weight, simple structure, and no moving parts.

The invention relates to the field of motor locks, and provides a motor lock which comprises a clamping hook assembly, a motor assembly and a rack assembly, the clamping hook assembly is rotatably arranged in the motor lock, and the rack assembly can be connected with the clamping hook assembly in a clamped mode; during unlocking, the motor assembly is powered on to drive the rack assembly to move in the direction close to the lock pin, locking of the rack assembly on the clamping hook assembly is relieved, the clamping hook assembly rotates in the unlocking direction, the clamping hook assembly and the lock pin are separated from each other, and unlocking is achieved. In the locking process, the motor assembly is powered on to drive the rack assembly to move in the direction away from the lock pin and drive the clamping hook assembly to rotate in the locking direction, so that the rack assembly is connected with the clamping hook assembly in a clamped mode, and the clamping hook assembly is locked to the state that the clamping hook assembly cannot rotate through the rack assembly; and meanwhile, the clamping hook assembly is clamped with the lock pin to realize locking. According to the motor lock, the clamping hook assembly, the motor assembly and the rack assembly are matched with one another, the unlocking thrust is enhanced, the working current is small, and the stability of the locking and unlocking process is improved.

The invention provides a low-power-consumption monitoring detection method and circuit, and the method comprises the steps: detecting the physical collision of a vehicle during parking through a plurality of piezoelectric sensors disposed at different parts of the vehicle, and generating an analog voltage signal; first-stage judgment is started, the analog voltage signals are detected and processed, and whether an effective vehicle collision event occurs or not is judged in combination with a signal threshold value; when a valid vehicle collision event occurs, a second level determination based on the vehicle look-around image data is performed. As the piezoelectric sensor can generate the analog voltage signal only after being collided, and only when the analog voltage signal is judged to indicate that an effective vehicle collision event occurs, the second-stage judgment based on the vehicle all-round view image data can be executed, and compared with an ultrasonic radar or a vibration sensor, the second-stage judgment is more accurate. The power consumption of the monitoring system can be effectively reduced, unnecessary video recording and storage are reduced, and the standby time of the system is prolonged.

The present disclosure provides a connecting sheet structure and a battery module. The connecting sheet structure comprises a connecting sheet body, the connecting sheet body comprises a connecting part and a welding part, the connecting part is connected with the welding part; the welding part is provided with a spot welding bump, the spot welding bump is used for spot welding connection with an electrode of a battery cell; the thickness of the connecting sheet body is greater than 0.3 mm, and the thickness of the spot welding bump is less than or equal to 0.3 mm. The connecting sheet structure makes the use safety of the battery module better.