30results about How to "Stable current output" patented technology

The invention discloses a constant-current current-limiting inverter. The constant-current current-limiting inverter comprises a voltage booster, an H-bridge circuit, a sampling module, a comparison module and an MCU. The voltage booster is used for increasing the voltage of direct current. The H-bridge circuit is provided with a rectifier filter device and used for converting the direct current output by the voltage booster into alternating current. The sampling module is used for conducting current sampling on the alternating current output by the H-bridge circuit and rectifying the alternating current into a voltage value signal IS which corresponds to voltage of the output end of the H-bridge circuit and is constant in direction. A maximum threshold value and a minimum threshold value are set for the comparison module, and the comparison module judges whether the voltage output by the H-bridge circuit is between the maximum threshold value and the minimum threshold value according to the voltage value signal IS. The MCU controls the H-bridge circuit to be on or off according to output of the comparison module. The constant-current current-limiting inverter has the advantages that the situation that starting power of the H-bridge circuit is affected due to changes in performance of short-circuit protection and overload protection is avoided, the structure is simple, the cost is low, the development cycle is short, the current output is stable, and the constant-current current-limiting inverter can be applied to high-power electrical appliances.

The invention discloses a portable solar power charging treasure with multiple folding surfaces, which comprises a battery bottom plate, on which a solar battery panel is arranged, the solar battery panel includes a supporting rotating plate, and the supporting rotating plate is connected with a battery panel assembly through a hinge shaft, and the battery The top of the board assembly is provided with a ray tracing device. The battery board assembly includes a main body and a rail baffle set on the top of the main body. There are two push-pull battery board groups symmetrically arranged on the main body, and the main body surface of the push-pull battery board group An integrated battery board is provided, and the push-pull battery board group includes a first battery board and a second battery board, and translation components are provided on the sides of the first battery board and the second battery board, relative to the first battery board and the second battery board of the translation assembly There is a U-shaped groove on the second battery board, and a concentrator is hinged on one side of the first battery board along the length direction, which realizes the simple and portable structure of the solar power bank, and at the same time can provide stable power output and improve the performance of the solar power bank. Charging efficiency.

The invention relates to the technical field of workpiece barrel plating equipment in the electroplating industry and particularly relates to a planetary barrel plating machine. The planetary barrel plating machine comprises a controller, a first bevel gear, an outer cover, a rack, a roller mounting frame, a first bearing support, a transmission shaft, a second bearing support, a planetary roller mechanism, a second bevel gear, a motor and a third bevel gear; the controller is installed in the rack and is used for supplying power to the motor and controlling the speed of the motor; the motor is fixed on the rack, the motor is connected with the first bevel gear, the first bevel gear is engaged with the second bevel gear, and the second bevel gear and the third bevel gear are respectively installed at the upper and lower ends of the transmission shaft; the transmission shaft is installed on the roller mounting frame through the first bearing support and the second bearing support, and the roller mounting frame is fixedly connected with the rack through a screw; the outer cover is fixedly arranged on the rack and covers the controller and the motor; the working efficiency of the planetary barrel plating machine is much higher than that of a common single-roller barrel plating machine, the plated part quality is relatively higher and the electroplating reaction time is shorter.

The invention discloses a high frequency current commutation device for medical bag production. The device comprises a bottom plate that is connected to two side plates, over which a mounting plate is fixed. The mounting plate is in connection with a first support, where a first double-rod cylinder is fixed. And the lower part of the first double-rod cylinder is connected to a first electrode. The bottom of the bottom plate is in connection with a second support, where a second double-rod cylinder is fixed. And the second double-rod cylinder is in connection with a second electrode. The bottom plate is provided with two linear guide tracks connected to a slider mounting plate, which is in connection with two vertically overlapped insulation plates. A conductive rod is arranged between the insulation plates, the top and bottom of which are connected to brass plates. The bottom plate is also equipped with a cylinder support connected to a cylinder. And the cylinder piston is in connection with a cylinder connection plate that is connected to the insulation plates and the slider mounting plate. The invention provides a high frequency welding machine used for medical bag production and processing.

A switch power for driving laser light emitting diode, including: the adjusting operating current multi-circle potentiometer and the operating current amplifier that connect with each other, the setting most current multi-circle potentiometer and the setting current amplifier that connect with each other, the operating current amplifier and the setting current amplifier connect with the current value comparison selecting gate, the output of the current value comparison selecting gate connects with the outputting current controller, the outputting current controller connects with the laser by the big current power module. The invention is: high stability power, settable most operating current, forcible zero startup function, high power factor and high power efficiency.

The invention belongs to the technical field of a photoelectric device and particularly relates to a self-driven Se / ZnO heterojunction ultraviolet photoelectric detector and a manufacturing method thereof. According to the method, a spin coating-high temperature annealing method is employed, and a large-scale ZnO nanometer particle film with thickness in a range of 50-200nm and having an excellent crystallization degree is manufactured; a heat evaporation transfer method is then employed, a Se film with thickness in a range of 1-2mum is deposited on the ZnO nanometer film; the Se / ZnO heterojunctio dual-layer film is utilized to construct a photoelectric detector. The Se / ZnO heterojunction photoelectric detector working under a zero bias voltage has self-driven characteristics, excellent ultraviolet light selectivity and millisecond-level response time, a problem of slow response speed existing in a traditional ZnO-based ultraviolet photoelectric detector is solved, the manufacturing process is simple, and the method is applicable to ultraviolet light detection and the related field.

The invention discloses an intermediate-frequency and high-power component for a resistance welding machine. The intermediate-frequency and high-power component comprises an FRD (fast recovery diode) rectification module and an intermediate-frequency transformer, wherein the FRD diode part consists of two FRDs, a conductor and a pressing plate; the conductor is provided with a bottom surface, a top surface, and a left pressing vertical surface and a right pressing vertical surface which are positioned on the bottom surface, and a middle vertical surface; a cooling water channel is formed in the conductor; the two FRDs are positioned between the middle vertical surface of the conductor and the left pressing vertical surface on one side of the middle vertical surface and between the middle vertical surface of the conductor and the right pressing vertical surface on the other side of the middle vertical surface; the pressing plate elastically presses negative electrodes of the FRDs on the middle vertical surface; the electrodes are connected with secondary coils through copper pins and are welded together through welding fluxes; insulating spray-coating layers are arranged on the surfaces of the secondary coils; primary coils are formed by resin solidification and coverage. The intermediate-frequency and high-power component is compact in structure, high in heat dissipation effect and convenient to mount, operate and replace, ensures that the FRDs of the rectification part is in good contact with the contact surface the conductor, and is more stable in working performance.

The invention discloses a method for measuring electric quantity of a battery, and the method is suitable for a battery structure. The battery structure comprises a three-element unit battery and at least one lithium iron unit battery. The method for measuring the electric quantity comprises the first step of measuring the voltage or a current of the three-element unit battery to work out the remaining electric quantity of the three-element unit battery, and the second step of working out the current remaining electric quantity of the battery structure according to the remaining electric quantity of the three-element unit battery.