5results about How to "Reduced driving ability" patented technology

The application provides a driving circuit for a three-phase system power switch device, the three-phase system comprises a power switch group corresponding to each phase, the power switch group comprises an upper bridge arm power switch and a lower bridge arm power switch, the driving circuit corresponds to the upper bridge arm power switch, the driving circuit comprises a capacitor voltage division circuit, a voltage stabilizing circuit and a push-pull driving circuit, the capacitor voltage division circuit is connected with two phases except the corresponding phase, the output end of the capacitor voltage division circuit is connected with the corresponding voltage stabilizing circuit, the push-pull driving circuit and the upper bridge arm power switch of the corresponding phase in sequence, direct power is taken from the three-phase power supply, and a stable direct current voltage is generated to reliably drive the power switch device. The application realizes efficient and reliable driving of the power switch device, and overcomes the limitations of the traditional driving circuit which depends on a heavy isolation transformer or a complex switch power supply.

A method and system for controlling an engine clutch of a vehicle, comprising the following steps: determining whether a learning mode entry condition is satisfied based on whether a forced downshift occurs during execution of variable hydraulic control of the engine clutch and based on the degree of slippage of the engine clutch; when a vehicle state satisfies a predetermined learning mode entry condition, deriving and storing a learning hydraulic value, the learning hydraulic value being used to suppress slippage that would occur when a forced downshift occurs during execution of the variable hydraulic control so that slippage does not occur; and when the same forced downshift situation occurs, calculating a final hydraulic pressure by adding a hydraulic compensation value to a target hydraulic pressure, and using the calculated final hydraulic pressure to control the engine clutch.

The invention relates to a dual-mode low dropout linear regulator and a chip thereof in the technical field of electronic circuits. The voltage stabilizer comprises an operational amplifier, N-type transistors Q1, Q2, PMOS (P-channel Metal Oxide Semiconductor) transistors PM1, PM2, current sources Ibias1, Ibias2, switches S1, S2, a switch JUMP, resistors R1, R2 and an output capacitor Co. Heavy-load configuration: controlling the S1 and the switch JUMP to be switched off, and controlling the S2 to be switched on; and light load configuration: controlling the S1 and the switch JUMP to be switched on, and controlling the S2 to be switched off. Therefore, the Q2 is used for heavy load configuration, and the load driving capacity is high. According to light load configuration, Q2 is not used any more, Q1 is selected as a power tube, certain driving capacity is achieved, meanwhile, part of layout area is saved, different working modes are switched according to actual application scenes, and stable output voltage is obtained. Through experimental simulation, the circuit disclosed by the invention can realize switching of two configurations on the premise of not losing performance functionally, and meanwhile, the Q2 with the largest area in the voltage follower can be multiplexed, so that area optimization is realized.

The present invention discloses a transmission mechanism and a transmission device, which comprises a mounting shell, a locking assembly and a movable part. The side wall of the mounting shell can be used to abut against the mounting wall of a profile part, the mounting shell can be arranged on the profile part, the mounting shell is formed with a sliding groove, and the tops of the two side walls of the sliding groove are respectively provided with limiting edges. The locking assembly can be used to be inserted into the mounting shell and the mounting wall and connected to the handle. The movable part is inserted into the sliding groove, and the two side walls of the movable part are provided with a clamping strip abutting against the limiting edges, and the bottom wall of the movable part is provided with a transmission rack, which can mesh with the output end of the handle. The transmission mechanism can have a smaller space occupation, and the profile part and the transmission part do not need to be processed during installation, thereby reducing the difficulty of processing and installation and the processing cost.

The invention relates to the technical field of medical equipment control, in particular to a power supply circuit of a cold-state light source and electronic equipment. The input end of an output management module is connected with a power supply module, and the output end of the output management module is connected with an output interface for accessing an external load; the input end of the voltage reference module is connected with the power supply module. The first output end of the voltage reference module is connected with the reference input end of the current-limiting protection module. The sampling input end of the current-limiting protection module is connected with the output end of the output management module, and the output end of the current-limiting protection module is connected with the feedback end of the output management module; the second output end of the voltage reference module is connected with the reference input end of the boost control module; the sampling input end of the boost control module is connected with the output end of the output management module, and the output end of the boost control module is connected with the feedback end of the output management module. Intelligent management of the cold-state light source is realized, and the starting success rate, the operation stability and the safety of the light source system of the medical equipment are improved.