39results about How to "The voltage value is stable" patented technology

The invention relates to a voltage stability control circuit of a wireless power supply system. The voltage stability control circuit is electrically connected with the output end of a wireless receiving end and comprises a filter circuit, a BUCK voltage reduction circuit and a BOOST voltage boosting circuit, the BUCK voltage reduction circuit and the BOOST voltage boosting circuit are connected in a series mode, and voltage stability control is conducted on the input voltage VIN by controlling the BUCK voltage reduction circuit to work in the through mode and controlling the BOOST voltage boosting circuit to work in the voltage boosting mode; or voltage stability control is conducted on the input voltage VIN by controlling the BUCK voltage reduction circuit to work in the voltage reduction mode and controlling the BOOST voltage boosting circuit to work in the through mode, meanwhile, a power supply circuit self-starting circuit is arranged, at the moment of powering up, the self-starting circuit is started and supplies power to a drive circuit, after the voltage value of an output end CY2 gets stabilized, the output end CY2 supplies power to the drive circuit, it is guaranteed that a stable power source is provided for the drive circuit, and stability of system operation is guaranteed.

The invention discloses a universal meter battery box. The universal meter battery box comprises a box body, battery chambers and a box cover, wherein an upper cavity and a lower cavity are formed in the box body, a DC/DC converter is arranged in the box body, the upper cavity and the lower cavity are used as the battery chambers, a groove is formed in the box cover, and an elastic component is arranged in the groove in pivoting mode through a rigid rod. The universal meter battery box can be embedded in a universal meter, or can be connected with the exterior of the universal meter. Due to the fact that the universal meter battery box is provided with the upper cavity, the lower cavity and the DC/DC converter, various batteries can be selected for supplying electricity, voltage of needed value can be output through conversion of the DC/DC converter, the universal meter battery box is not restricted to one specification of the battery, usage expansion of the universal meter is facilitated, power contact performance of the universal meter battery box is good, the universal meter battery box guarantees that power is supplied to the universal meter in stable voltage, and the use problems that the universal meter performs inaccurate measurement under the circumstance that battery capacity is reduced and the like are solved.

The invention discloses a display screen structure. The display screen structure comprises a display substrate, a negative electrode wire and at least one metal circuit, wherein the display substrateis provided with a display region and a non-display region, the negative electrode wire is arranged on the non-display region, the at least one metal circuit is arranged on the non-display region andis electrically connected in parallel with the negative electrode wire, and an insulation layer is contained between the negative electrode wire and the at least one metal circuit. By such a parallelmode, the resistance in the negative electrode wire is reduced, and the brightness uniformity of a display screen is improved.

A current protection circuit for a high voltage system includes: a power supply module to supply power to a load through a high voltage bus and a low voltage bus; a detection module connected to the high voltage bus and used to detect a value of current flowing through the high voltage bus; a signal processing module electrically connected to the detection module and used to amplify the current flowing through the high voltage bus; and a control module electrically connected to the signal processing module, the power supply module, and the load, and used to disconnect the load from the power supply module or perform current limiting for the load when the value of the amplified current exceeds a preset threshold.

The invention discloses a multi-cathode-compartment denitrifying phosphorus removal electrogenesis device by an activated sludge process, and belongs to the technical field of sludge treatment. The electrogenesis device comprises an anaerobic pool, a primary settling tank, an aerobiotic pool, a secondary sedimentation tank, an oxygen deficit pool and a final sedimentation tank, wherein the anaerobic pool is used as an anode compartment of a microbial fuel cell; the aerobiotic pool, the secondary sedimentation tank, the oxygen deficit pool and the final sedimentation tank are used as a cathode compartment of the microbial fuel cell and arranged around four sides of the anaerobic pool; the anode compartment and the cathode compartment are externally connected with resistors, and four pool walls of the anaerobic pool are equipped with proton exchange membranes. The anaerobic pool and the aerobiotic pool, the secondary sedimentation tank, the oxygen deficit pool and the final sedimentation tank are separated by the proton exchange membranes, and the proton exchange membranes can be freely opened and closed by a baffle. The primary settling tank is connected with the oxygen deficit pool through a surpass sludge pipeline, and the aerobiotic pool and the secondary sedimentation tank, the final sedimentation tank and the anaerobic pool are connected through backflow sludge pipelines; a water outlet pipeline and a sludge discharge opening are arranged on the final sediment tank; when the sludge is treated, power energy is generated. The multi-cathode-compartment denitrifying phosphorus removal electrogenesis device can effectively reduce the concentration of COD, TP and TN in sewage, and generate stable voltage value by widely using an electron acceptor.

The invention provides a transformer voltage tracking feedback automatic adjusting device and an adjusting method thereof. The transformer voltage tracking feedback automatic adjusting device comprises a signal collection module, a control module, a display module, a signal storage feedback module, a switching controller and a transformer, wherein the signal acquisition module utilizes a voltage sensor and voltage signal acquisition software to acquire and store a voltage fluctuation curve in a transformer area; the control module is used for carrying out analysis processing based on corresponding signal information and then carrying out dynamic regulation and control on the switching controller; the switching controller is used for dynamically controlling the switching position and frequency of the transformer; the signal storage and feedback module is used for dynamically collecting a current voltage value in real time, storing the current voltage value and feeding back the current voltage value to the control module; the transformer is used for adjusting line voltage; and the display module is used for displaying basic values in a line. The control mode of an existing transformer is effectively improved, and the service life and the energy utilization rate of the device are greatly improved.

An embodiment of the invention discloses a constant-current driving device and a starting method thereof and belongs to the field of circuit devices for electric light sources. The device comprises a power supply, an LED lamp set, a starting circuit, a first diode and a second diode, wherein the power supply is connected with a cathode end of the first diode, a cathode end of the second diode and an input end of the LED lamp set respectively, an anode end of the second diode is connected with a starting end of the starting circuit, an output end of the LED lamp set is connected with an input end of the starting circuit, and an anode end of the first diode and an output end of the starting circuit are connected with a cathode of the power supply. According to the constant-current driving device, the cost of a low starting voltage device in an existing starting circuit is effectively reduced.

The invention discloses a power saving device for large power equipment. The power saving device comprises a machine case and a power saving device body, wherein the power saving device body is arranged in the machine case and comprises an integrated control unit, a bypass control unit, a harmonic compensation device, a reactive compensation device, a voltage stabilizing device, a surge control device and a bypass switching control key. According to the power saving device, electric equipment can always run in a supply-demand balance state through a PID control closed-loop link; the service lifetime of the electric equipment can also be prolonged under the condition of greatly reducing the energy consumption; and meanwhile, the bypass control unit of the device can effectively ensure that production of the electric equipment is not affected by an equipment failure.

The present invention provides a comparison output circuit with isolation and anti-interference, including a sensor interface J1, a first-stage amplifier, a linear optocoupler integrated circuit IC1, a threshold potentiometer POT2, an output transistor Q2, and an output interface socket J2, wherein the The output end of the sensor interface J1 is connected to the input end of the one-stage amplifier, the output end of the first-stage amplifier is connected to the input end of the linear optocoupler integrated circuit IC1, and the output end of the linear optocoupler integrated circuit IC1 They are respectively connected to the input terminal of the threshold potentiometer POT2 and the pin 3 of the output interface socket J2, and the output terminal of the threshold potentiometer POT2 is connected to the base of the output transistor Q2. The beneficial effect of the invention is that it can well filter out the clutter signal in the signal source, amplify the signal source at the same time, suppress the common mode interference through linear optocoupler isolation, and obtain a stable voltage value after passing through the comparison circuit.

The invention relates to a high-voltage vacuum switch fault early warning method and system, and the method achieves the detection of a voltage signal and the alarm of an abnormal state after the opening of a high-voltage vacuum switch in a mode of combining a PLC module with an alarm device. Voltage signals output by the high-voltage vacuum switch are subjected to voltage reduction through a transformer, pass through a delay assembly, then are output to a voltage acquisition device and then enter a PLC module, the PLC module judges whether the voltage of each phase exceeds a set voltage threshold value or not, and if the voltage of each phase exceeds the set voltage threshold value, the PLC module outputs the voltage signals to an alarm detection driving device. After the alarm detectiondriving device detects the voltage signals, the alarm detection driving device drives the alarm device to give an alarm, otherwise, no operation is performed.

A compensating voltage regulator including chassis, A cavity is arranged in the chassis, A top plate and a bottom plate are arranged in the cavity, Between that top plate and the bottom plate, a three-phase cop bar is fixedly installed, A left-right symmetrical fix mounting of that bottom end surface of the bottom plate is provide with a front-rear extending bottom frame, A left-right symmetricaltop frame is fixedly arrange on that upper end surface of the top plate, At both front and rear end of that top frame, the front and rear ends of the top frame are out of the top plate, At both frontand rear end of that chassis, A lead bar is fixedly installed between that top frame and the bottom frame, The three-phase copper bar is symmetrically provided with a sliding plate which extends leftand right and is slidably matched with a guide rod of a corresponding side, and a carbon brush which is opposed to and slidably matched with the three-phase copper bar is fixedly installed on the sliding plate toward the end face of the three-phase copper bar, and the carbon brush is electrically connected with a compensation transformer installed in the cavity through a cable.