34results about How to "Stable current output" patented technology

The application discloses a low-noise high-precision voltage control current source for a semiconductor laser, comprising a voltage control signal generation module, a PID control module and an output current sampling and feedback module, wherein the voltage control signal generation module receives a host computer instruction and generates a voltage control signal of an output current; the PID control module receives and processes the voltage control signal generated by the voltage control signal generation module and the feedback voltage generated by the output current sampling and feedback module, generates a control voltage to control the output current of the output current sampling and feedback module; and the output current sampling and feedback module provides a stable output current for a load and provides the amplified voltage quantity of the current feedback compared with the voltage control signal to the PID control module to provide the feedback voltage for the PID control module. The application can realize accurate and stable current output, the output current is adjustable, and the application can provide stable low-noise high-precision driving current for semiconductor lasers and the like.

This invention discloses a directional adaptive wave energy generator and its power generation method. In this invention, raft one and raft two oscillate back and forth with the waves. During oscillation, a magnetic coupling transmission device and a one-way bearing drive the drive shaft of the triboelectric nano-power generation mechanism located in the sealed chamber to rotate unidirectionally. The drive shaft drives the FEP friction layer in the rotor of each power generation component to contact and rub against the MF foam friction layer in the stator, generating triboelectric charge. Furthermore, the relative positions between the FEP friction layer and the copper electrodes A and B in the stator periodically change, creating an alternating potential difference between copper electrodes A and B. Electrons flow back and forth between copper electrodes A and B, forming an alternating current, thus achieving power generation. Raft two is equipped with a tail fin, enabling the device to automatically adjust its attitude according to the wave or current direction. This invention can convert low-frequency wave energy into a stable current output for power generation and exhibits strong adaptability to multi-directional waves and complex sea conditions.

The invention relates to the field of electro-catalytic materials, and mainly discloses a metal-metal catalyst for preparing nitrite through electro-catalytic ammoxidation and a preparation method and application of the metal-metal catalyst, and the catalyst is composed of molybdenum (Mo), nickel (Ni) and copper (Cu) in a metallic state and does not contain an oxide or hydroxide phase. The metal-metal catalyst provided by the invention shows excellent comprehensive performance in electrocatalytic ammoxidation reaction, the catalyst shows extremely low reaction starting potential in the aspect of catalytic activity, and the starting potential is only 1.36 V relative to a reversible hydrogen electrode in electrolyte, so that the energy input required by the reaction is remarkably reduced, and the energy consumption is reduced. Ammonia oxidation can be tested under milder conditions, the safety and reliability of ammonia oxidation are directly improved, efficient ammonia utilization rate and nitrite selectivity are realized, side reaction is effectively inhibited, and the catalyst is particularly remarkable in long-term operation stability.

The application belongs to the technical field of integrated circuits, and discloses a temperature-approximate-independent current reference circuit, which comprises a starting module, a reference current generating module and an output current generating module. The input end of the reference current generating module is connected with the starting module, and a feedback signal is applied to the starting circuit module. The input end of the output current generating module is connected with the output end of the reference current generating module. On the basis of the reference current output, the reference current can be amplified or reduced by one or several groups of current mirrors, so as to obtain one or several groups of temperature-approximate-independent output currents. The application can work in a wide voltage range and output a temperature-approximate-independent current.