35results about How to "Output power adjustment" patented technology

The invention discloses a photosensitive LED lamp, which comprises a power supply unit, an MCU unit, a photosensitive sensor, a power adjustment unit and an LED lamp; the power input ends of the MCU unit, the photosensitive sensor and the power adjustment unit are respectively electrically connected to the power supply unit; The output end of the photosensitive sensor and the control input end of the power adjustment unit are respectively electrically connected to the MCU unit, and the output end of the power adjustment unit is electrically connected to the LED lamp. The output brightness of the photosensitive LED lamp of the present invention is adjustable, energy-saving and environment-friendly.

The invention discloses a main generator excitation current variable-level control circuit adopted when locomotive microcomputer excitation control fails. The control circuit comprises a locomotive microcomputer, a locomotive power system, a driver controller, a traction control circuit, a main generator microcomputer excitation loop and a main generator fault excitation loop. The driver controller is provided with a first traction gear, a second traction gear, a third traction gear, a fourth traction gear, a fifth traction gear, a sixth traction gear, a seventh traction gear and an eighth traction gear. A first contactor, a second contactor, a third contactor and a fourth contactor are connected to the traction control circuit. A locomotive fault excitation resistor R1, a locomotive fault excitation resistor R2, a locomotive fault excitation resistor R3 and a locomotive fault excitation resistor R4 are connected to the main generator fault excitation loop. A normally-open contact K1 of the first contactor, a normally-closed contact L4 of the fourth contactor and the locomotive fault excitation resistor R1 are sequentially connected in series and then connected with the locomotive power system. A normally-open contact K2 of the second contactor, a normally-open contactor K3 of the third contactor and a normally-open contact K4 of the fourth contactor are correspondingly connected with the locomotive fault excitation resistor R2, the locomotive fault excitation resistor R3 and the locomotive fault excitation resistor R4 in series respectively and then connected to the locomotive power system, the output power of a locomotive main generator can be adjusted under the fault excitation working condition, the traction power of a locomotive axle is maximal, and the traction capacity of a locomotive is greatly improved.

The invention relates to a motor vehicle multi-voltage vehicle circuit, its operation method and the mechanism for realizing the method. For the method, the multivoltage vehicle circuit has a first subcircuit operable with a first operating voltage and a second subcircuit operable with a second operating voltage, the first and second operating voltages being the same or different, Optional current can be fed from the first sub-circuit into the second sub-circuit or can be fed from the second sub-circuit into the first sub-circuit, and at least one electrical load can be coupled to the first sub-circuit and can be fed from the first sub-circuit Sub-circuit decoupling. The method includes a special operating mode in which a negative load jump caused by coupling at least one electrical load to the first sub-circuit is caused by feeding current from the second sub-circuit into the first sub-circuit and through at least one electrical load. The positive load jump caused by the decoupling of the load from the first subcircuit is correspondingly counteracted within the feeding time interval by feeding current from the first subcircuit into the second subcircuit.

The present invention relates to a multi-manifold air-supply fuel cell system, comprising: an air compressor, used to press ambient air into the system; a humidifier, arranged behind the air compressor; a multi-manifold, the The main intake pipe of the multi-manifold is connected to the outlet of the humidifier, and throttle valves are respectively provided on each branch manifold; the fuel cell includes a plurality of battery stack modules, and the cathode terminals of each battery stack module are connected to the multi-manifold respectively. The branch manifolds are connected correspondingly; the electric energy conversion device is connected with the fuel cell at one end and the load at the other end; the control device is respectively connected with the load and each throttle valve; the hydrogen storage device, the hydrogen supply pipeline of the hydrogen storage device is connected with each The anode terminal connection of the stack module. Compared with the prior art, the invention improves the inconsistency of each module, improves the overall performance of the fuel cell system, and prolongs the service life of the fuel cell system.

The invention discloses an output power adjusting device and method of a mobile terminal. The device comprises a baseband chip, a detecting module and an earphone amplifier. The baseband chip controls the work state of the detecting module according to the plug state of an earphone. When the earphone is plugged in, the detecting module outputs corresponding feedback voltages to the baseband chip according to earphone impedance. The baseband chip adjusts the gain of the earphone amplifier according to the feedback voltages to adjust the output power of the mobile terminal. Thus, the output power of the mobile terminal can be automatically adjusted according to the impedance of the earphone plugged in so as to guarantee that volumes output by earphones are the same under the condition that earphones with different impedances are connected. The problems that existing default loads are different from the load of the earphone plugged in, but output voltages are fixed, and consequently, the volume output by the earphone is too large or too small are solved.

The invention discloses an electric car driving controlling system and a controlling method thereof. The electric car driving controlling system comprises a battery front-end collecting module, a whole car signal collecting module and a power conversion module which are connected with a controlling module respectively; the battery front-end collecting module comprises a first collecting unit; thecontrolling module comprises a calculating unit and a first communication unit; the power conversion module comprises an inversion unit and a second collecting unit; the calculating unit is used for calculating the maximum current and the maximum power which can be output by battery sets currently, calculating the maximum output power of a power motor, calculating the maximum output power of an electric car and selecting the minimum value of the maximum power which can be output by batteries currently, the maximum output power of the power motor and the maximum output power of the electric caras the output power of the power conversion module; the output power of the power conversion module is adjusted to be a target output power according to set conditions.