32results about How to "Change the output voltage" patented technology

The present invention provides an electronic battery, composed by connecting a voltage input terminal, a voltage output terminal, an insulation protecting shell, a charge switch circuit, a voltage conversion circuit, a detection circuit, an electronic gun, a sealing spherical capacitor. The inside of the spherical capacitor is a capacitor anode conductor, the outside is a capacitor cathode conductor, the center is an insulation heat conduction layer; the electronic shell and the insulation layer of the spherical capacitor form a sealer, the electronic is sealed and linked to the spherical capacitor. When adding a certain voltage to the spherical capacitor anode, the electronic gun injects the electron to the sealing spherical capacitor, absorbing mass electrons in the inside of the spherical capacitor to achieve the aim of storaging electronic energy according to the principle of like magnets repel each other and unlike magnets attract each other; the capacitor voltage is convenientlychanged by exerting different voltages on the spherical capacitor anode, achieving the aim of changing the output voltage; realizing the input and the output voltage isolation at the same time.

The invention relates to a performance test device of a mixed-type direct-current solid-state breaker, and belongs to the field of high voltage and large current experiments. The performance test device comprises a rectifier, a charging capacitor set, a high-speed camera, a displacement sensor, an oscilloscope, a high-voltage differential probe, a current divider and the like. By means of changes of the number of capacitors in series-parallel connection, a capacitance value of the capacitor set is changed. The high-speed camera is connected with a computer and is used for shooting the motion process of a quick mechanical switch contact and a pull rod in the switching-off and switching-on processes. The displacement sensor is used for measuring the motion speed of a quick mechanical switch pull rod and a contact. The current divider is used for measuring currents flowing through a discharging circuit, a power electronic branch circuit, a buffer and a voltage limiter. The high-voltage differential probe is used for testing the serial-connection voltage sharing effect of each power electronic component. The oscilloscope is used for displaying a test result. The performance test device meets requirements for different parameters in the development process of the mixed-type direct-current solid-state breaker and provides a quantization basis for work performance analysis.

The invention discloses an LED lamps energy conservation control circuit capable of timingly changing brightness; the circuit has simple structure, high efficiency, low power consumption, and capability of saving energy and prolonging service life of a lamp. The invention comprises a rectification filter circuit (1), a voltage regulator circuit (2), LED load (3), a constant current source device (4), and a timing circuit (8); through rectification and filtration by the rectification filter circuit (1), alternating current is changed into direct current and is then regulated through the voltage regulator circuit (2) to be constant direct current output, thus an output end (A) and an earth terminal (G) are formed; after connected in series, the LED load (3) and the constant current source device (4) are connected between the output end (A) and the earth terminal (G) to form a return circuit; the timing circuit (8) is connected with the voltage regulator circuit (2) for providing timing feedback signal to change output voltage of the voltage regulator circuit (2). The LED lamps energy conservation control circuit capable of timingly changing brightness can be widely applied to the LED lamp field.

The invention relates to a street lamp system combining wind energy with photovoltaic energy, wherein a wind driven generator, a first chip, a second chip and a speed-regulating voltage-limiting executing device are connected sequentially and transmit electrical energy onto a controller; the photovoltaic generator transmits the electrical energy onto the controller by a voltage stabilizer; one end of a repairing device is connected with the controller, while the other end thereof is connected with a storage battery so as to transmit two parts of electrical energy on the controller to the storage battery and repair the storage battery; an illuminance detector and a temperature detector are respectively electrically connected on a third chip; the third chip controls opening or closing of a switch device; and the electrical energy of the storage battery is transmitted to a street lamp light source by the controller and the switch device. The street lamp system of the invention organically combines the wind energy with the photovoltaic energy, has the advantages of energy saving, environment protection, long service life of the storage battery, timely opening or closing of the street lamp light source and has wide market prospect.

The present invention relates to the field of transformers, in particular to a vertically wound flat transformer, which includes a primary coil mechanism, a secondary coil mechanism, a central heat dissipation mechanism, a support frame mechanism, a rotating heat dissipation mechanism and a wiring mechanism. The secondary coil mechanism is connected to In the primary coil mechanism, the central heat dissipation mechanism is fixedly connected to the lower end of the primary coil mechanism and is located in the secondary coil mechanism, the support frame mechanism is fixedly connected to the primary coil mechanism, and the rotating heat dissipation mechanism is rotatably connected On the supporting frame mechanism, and the supporting frame mechanism and the rotating heat dissipation mechanism are connected by transmission, there are four wiring mechanisms, and the four wiring mechanisms are all connected to the primary coil mechanism. The purpose of the present invention is to provide a vertical winding The flat transformer can change the ratio of the input voltage to the output voltage, which is convenient for the special use of the transformer.

The invention discloses a CAN flow equalizing method with a grouping function. The method comprises the steps of S1, starting to send data; S2, judging the group type; S21, when A groups of power module data are received, executing S211; S211, judging whether the data belongs to a mailbox 1 or not, and if yes, executing S212; if the data does not belong to the mailbox 1, returning the result; S212, judging whether a grouping command exists or not, if yes, executing S23, and if not, returning the result; S22, when B groups of power module data are received, executing S221; S221, judging whetherthe data belongs to a mailbox 2 or not, and if yes, executing S222; if not, returning the result; S222, judging whether a grouping instruction exists or not, if yes, executing S23, and if not, returning the result; S23, updating the group type according to the grouping command, and modifying the ID of an internal communication mailbox 0; S3, returning the result. By means of the CAN flow equalizing method with the grouping function, a power module is grouped, and then flow equalizing is achieved.

The invention discloses a memory power supply circuit which comprises a PWM (Pulse-Width Modulation) controller, a first field effect tube, a second field effect tube, a first resistor, a second resistor, a third resistor, a first inductor, a second inductor and an electronic switch. The memory power supply circuit can adjust a voltage value output to a memory to be first output voltage or second output voltage according to demands.

The invention belongs to the field of ultralow temperature waste heat in the design industry and discloses a thermoelectric power generation device for recovering waste heat by utilizing foam metal. The device comprises an air duct, foam metal, a thermoelectric piece stack and a cooling mechanism, wherein the air duct is connected with a waste gas pipeline, the foam metal is filled in the air ductand is used for absorbing heat of waste gas entering the air duct from the waste gas pipeline, the thermoelectric piece stack is coated outside the air duct, the cooling mechanism is arranged on theouter side of the thermoelectric piece stack, after the foam metal absorbs the heat of the waste gas in the air duct, the heat is transferred to one side of the thermoelectric piece stack through theair duct, the cooling mechanism reduces the temperature of the other side of the thermoelectric piece on the outer side of the thermoelectric piece stack, so that a temperature difference is formed onthe thermoelectric piece stack, and the thermoelectric piece stack converts the temperature difference into voltage output, so that power generation is realized. According to the invention, the ultralow temperature waste heat of the waste gas of a data center, and a building air conditioner, an SVG room and the like is effectively recovered, the heat energy is converted into the electric energy,so that the waste is changed into wealth, and the method is safe and reliable.

The invention relates to a microwave power control system, by means of a feedback control circuit, voltage of a magnetron resonant cavity polar plate is adjusted, so that adjustable continuous linearity of microwave output power is achieved. The system is mainly composed of an independent magnetron filament power supply, voltage-power non-linear correction and a feedback controlled magnetron resonant cavity power supply circuit. By means of needed power density, control voltage Vc is output by the voltage-power non-linear curve correction, and the Vc serves as a feedback controlled reference signal. The reference signal is compared with a feedback signal, a servo motor is controlled to act, an electric brush is driven to slide, output voltage of an autotransformer is changed, then a resonant cavity of a magnetron is supplied with power by a boosting transformer, so that microwaves with different power output by the magnetron is controlled. Continuous and changeable power input is provided for a to-be-dried object in microwave drying, and the applicability of drying equipment is greatly improved.

The invention relates to a position sensor for a non-contact clutch, which solves the problems that the poor contact existing in the prior position sensor of the non-contact clutch leads to poor operational reliability and so on, The position sensor for the non-contact clutch comprises a shell, a rotor, a circuit board and so on, wherein a magnetic steel ring is arranged in the cylindrical rotor,the inner wall of the magnetic steel ring is symmetrically provided with two permanent magnet blocks respectively, and a cavity is formed between the two permanent magnet blocks; and the middle part of the circuit board is connected with an A Hall chip and a B Hall chip through two conducting member bars respectively, and the A Hall chip and the B Hall chip are positioned in the cavity between the two permanent magnet blocks. The sensor solves the problem of contact wear and prolongs service life; the sensor has good linear output characteristic and ensures that an output signal is more accurate and stable; the adopted Hall chips have functions of programmable property and temperature compensation, can flexibly change parameters of output voltage according to the requirement of customers,and automatically compensate and calibrate the magnetic field drift when the magnetic field intensity of a magnet drifts with the change of the temperature.