62results about How to "Reduce supply current" patented technology

The invention provides an intelligent gear-shifting top-spray shower head, belongs to the technical field of shower equipment and solves the problems that a conventional top-spray shower head cannot realize automatic gear shifting and is high in cost. The intelligent gear-shifting top-spray shower head comprises a housing with a water inlet formed in the upper side, wherein a plurality of groups of water outlet holes are formed in the bottom of the housing, and mutually independent water outlet cavities of which the number is equal to that of the groups of water outlet holes are formed in the housing; the water outlet cavities are communicated with the groups of water outlet holes in a one-to-one correspondence manner; a leading structure with both a water inlet end and a plurality of water outlet ends, a driving part capable of driving the leading structure, an inductor and a power supply unit capable of powering up the driving part are fixed in the housing; the water inlet end of the leading structure is communicated with the water inlet of the housing, the number of the water outlet ends is equal to that of the water outlet cavities, and the water outlet ends and the water outlet cavities are communicated in a one-to-one correspondence manner; the driving part can drive the leading structure to switch according to an induction signal of the inductor to be optionally communicated with one or more of the water outlet ends. The intelligent gear-shifting top-spray shower head has the advantages of being automatic in control, convenient to use, low in cost and the like.

The invention discloses a low power consumption meter remote self-help meter reading terminal and method based on OCR recognition. The self-help meter reading terminal comprises an optical image acquisition module, an OCR intelligent recognition module, an integrated circuit power supply management module, a communication module and a data management server. The self-help meter reading method comprises the steps that the optical image acquisition module acquires the optical image information of a measured meter and sends the information to the OCR intelligent recognition module; according to a pre-processed character image, the OCR intelligent recognition module extracts character features and sends the character features to the data management server; and the OCR character recognition module of the data management server recognizes the character features to acquire the display result of the measured meter, and the character features are stored and backed up. According to the invention, remote meter data acquisition is realized, and the low power consumption meter remote self-help meter reading terminal and method have the advantages of low power consumption, intelligent recognition, remote data transmission and high recognition rate.

The invention discloses an LED (Light-emitting Diode) lamp with a temperature-control protective circuit. The LED lamp comprises a power supply board (101), the temperature-control protective circuit and a radiator (102); the temperature-control protective circuit comprises a rectifying circuit (1), an LED light source load (3), a constant-current circuit (4) and first and second temperature-control switch circuits (6, 7); the first temperature-control switch circuit (6) comprises a first normally-closed temperature-control switch (F2) which is arranged on the radiator (102); when the temperature of the radiator (102) is higher than a switch-off temperature of the first normally-closed temperature control switch (F2), the first normally-closed temperature-control switch (F2) is switched off to cut off the supply power of the LED light source load (3); the second temperature-control switch circuit (7) comprises a second normally-closed temperature-control switch (F3) which is installed on the power supply board (101) and a voltage-dividing resistor; when an environment temperature of the circuit is higher than the switch-off temperature of the second normally-closed temperature-control switch (F3), the second normally-closed temperature-control switch (F3) is switched off and the current passes through the voltage-dividing resistor, so that a power supply current of the LED light source load (3) is reduced; and the LED lamp can be applied to the LED illumination field.

The invention discloses a driving and adjusting method of a bipolar transistor in an electronic ballast and a device thereof, which comprises the following steps: a detection step is used for detecting the voltage of the half-bridge middle point of the transistor; a step is used for generating a reference time signal; a step is used for generating a time interval; a comparison step is used for carrying out comparison between the real time interval and the reference time signal for determining the pulse width of a driving signal; and an adjusting step, if the real time interval is larger than the reference time signal, the driving signal of the period is prolonged relative to the driving signal of the last switch period; if the real time interval is smaller than the reference time signal, the driving signal of the period is shortened relative to the driving signal of the last switch period. The controlling method and the controlling device according to the technical proposal of the invention are flexible enough, the transistor can be driven and switched in the whole working period of the ballast and the transistor can be kept in a soft switching state in all working frequency. The controlling method is in favor of reducing and controlling the power consumption and power current of the ASIC.

The invention relates to a voltage following series power supply circuit. The circuit comprises a power supply terminal, a ground terminal, a power supply module and at least one auxiliary power supply module, wherein the power supply module comprises an input terminal and an output terminal, the input terminal is connected to the power supply terminal, and the output terminal is used for supplying a power supply to two or more to-be-powered-up chips; the power supply module and the to-be-powered-up chips are connected in series between the power supply terminal and the ground terminal; the atleast one auxiliary power supply module is used for providing auxiliary power supplies for the to-be-powered-up chips; a voltage following module is also connected between the power supply terminal and the at least one auxiliary power supply module and used for adjusting the voltage of the auxiliary power supplies.

The invention relates to an electric automation transmission execution mechanism control circuit. The control circuit comprises a boosted circuit, an energy storage capacitor, a select motor driving module, a shifting motor driving module, and a clutch motor driving module; the input end of the boosted circuit is connected with a vehicle power supply network; the output end of the boosted circuit is connected in parallel with the energy storage capacitor and the clutch motor driving module; and the output ends of the select motor driving module, the shifting motor driving module, and the clutch motor driving module are connected with a corresponding select motor, a corresponding shifting motor and a corresponding clutch motor in a driving way. Compared with the prior art, the control circuit saves materials, improves efficiency, reduces the using number of a switching tube and the power of the boosted circuit, and also saves the energy required by finishing one-time gear selecting and shifting and operating a clutch.

Provided is a serial power supply circuit, characterized by comprising: a first power supply unit, the first power supply unit being connected in parallel and being used for providing a first power supply voltage; a second power supply unit, the second power supply unit being connected in series and being used for providing a second power supply voltage; a power source unit for providing the firstpower supply unit and the second power supply unit with a power supply voltage; and a unit to receive power, the unit to receive power being provided with a first power supply unit access end for receiving the power supply voltage provided by the first power supply unit. The present invention achieves the aim that the power source conversion efficiency thereof is obviously better than that of a traditional serial and parallel power supply architecture in the current industry, and same also reduces an overall power supply current of a circuit, further simplifies a power supply circuit, and saves on the material costs of a device.

The invention provides a method for reducing power consumption. When a work mode of a mobile terminal is switched from a non-voice communication mode to a voice communication mode, the present power supply current of the mobile terminal is reduced if a screen of the mobile terminal is ON; and when the mobile terminal is switched back to non-voice communication mode, the present power supply current of the mobile terminal is increased if the screen of the mobile terminal is ON. The method can be used to reduce the power consumption of a system, and ensures high-efficiency operation of the system. The invention also provides a device for reducing the power consumption.

The invention provides an intelligent gear-shifting top-spray shower head, belongs to the technical field of shower equipment and solves the problems that a conventional top-spray shower head cannot realize automatic gear shifting and is high in cost. The intelligent gear-shifting top-spray shower head comprises a housing with a water inlet formed in the upper side, wherein a plurality of groups of water outlet holes are formed in the bottom of the housing, and mutually independent water outlet cavities of which the number is equal to that of the groups of water outlet holes are formed in the housing; the water outlet cavities are communicated with the groups of water outlet holes in a one-to-one correspondence manner; a leading structure with both a water inlet end and a plurality of water outlet ends, a driving part capable of driving the leading structure, an inductor and a power supply unit capable of powering up the driving part are fixed in the housing; the water inlet end of the leading structure is communicated with the water inlet of the housing, the number of the water outlet ends is equal to that of the water outlet cavities, and the water outlet ends and the water outlet cavities are communicated in a one-to-one correspondence manner; the driving part can drive the leading structure to switch according to an induction signal of the inductor to be optionally communicated with one or more of the water outlet ends. The intelligent gear-shifting top-spray shower head has the advantages of being automatic in control, convenient to use, low in cost and the like.

The invention relates to a resistive and capacitive voltage reducing device which comprises a control module and a power supply module connected with the control module. The power supply module comprises a resistive and capacitive voltage reducing unit and a second voltage reducing unit, the resistive and capacitive voltage reducing unit comprises a first capacitor, and the second voltage reducing unit comprises a second capacitor and a controlled switch. The second capacitor is connected with the first capacitor in parallel through the controlled switch, the resistive and capacitive voltage reducing unit supplies power to the control module after carrying out voltage reducing to an input first alternating voltage, and the control module regulates the power supply current size of a system under different statuses by controlling the switching on and the switching off of the controlled switch. The application of the resistive and capacitive voltage reducing device has the advantages that cost is low, stand-by power consumption meets the instruction requirements of energy using products (EPUs), and energy is saved.

The invention provides a safe torque turn-off function circuit and a control method. The function circuit comprises a first safe torque turn-off STO branch, a control element, a pre-driving element and a power device. Wherein a power supply pin of the pre-driving element is connected with the output end of the control element, and the output end of the pre-driving element is connected with the power device; the control element is used for acquiring the state of the first STO branch; under the condition that the state of the first STO branch is the off state, a first turn-off signal is generated, and the first turn-off signal is used for cutting off a power supply of the pre-driving element so as to turn off the power device. A switch in an existing circuit is replaced by a control element, no series switch is arranged on a bus, in this way, no extra loss is increased, no extra size is occupied, safe torque turn-off is achieved through the control element, the power supply current of the control element is far smaller than that of the switch, the circuit loss is greatly reduced, and the reliability of the circuit is improved. And the size of the control element is smaller than that of the switch, so that the product size is reduced.

The invention discloses a device for dynamic reactive power compensation energy saving of an oil pumping unit. The device comprises a data collection control unit, voltage collection units, current collection units, a rectifying unit and an inversion unit. Power grid voltage is connected with the input end of the rectifying unit through a filtering circuit, the output end of the rectifying unit is connected with the input end of the inversion unit, the output end of the inversion unit is connected with the power supply end of a motor of the oil pumping unit, and the signal control ends of the rectifying unit and the inversion unit are connected with the driving signal output end of the data collection control unit respectively. The device is further provided with the voltage collection units and the current collection units, the signal output ends of the current collection units and the voltage collection units are connected with the signal input end of the data collection control unit, and the data collection control unit is further provided with a voltage zero passage signal detection system. The device can compensate reactive power of impact load, balances three-phase active current, enables the oil pumping unit to continuously pump oil, enables the oil pumping unit to run in intermittently or in frequency reducing mode according to oil quantity and automatically adjust pumping speed, improves power factor and reduces power loss.

The invention discloses a method for improving the image uniformity of thermal printers, and specifically relates to the field of thermal printers. The specific steps are as follows: S1. Data acquisition: acquire original data according to images; S2. Group original data: group the original data obtained in step S1 The data is equally divided three times, and three arrays A, B, and C are established, and the three data after the equalization are saved respectively. First, the three arrays are cleared to 0; S3, circularly querying the original data; S4, heating and printing. The invention divides the image to be printed into multiple transmissions and heats it by using the data equalization technology. The number of image points heated each time is the same, and then uses the method of heating all points at one time, so the printed image is very uniform and effective. The printing quality of the printer is improved, and the competitiveness of the product is improved. Since the power supply current of the battery is reduced, a battery with a large output current is not needed, thereby saving battery cost.