46results about How to "Wide supply voltage range" patented technology

The invention discloses a high-power dimming electrodeless lamp. The high-power dimming electrodeless lamp comprises an anti-electromagnetic interference filter, a bridge rectifier module, an active power factor corrector, a half-bridge inverter oscillatory circuit, a power output device, a starting controller, a high-frequency coupler, a dimming circuit and an HB0809 integrated circuit, wherein the half-bridge inverter oscillatory circuit is used for converting a direct current voltage into a high-frequency alternating voltage; the power output device is used for supplying output power to the half-bridge inverter oscillatory circuit when the half-bridge inverter oscillatory circuit works; the starting controller is used for controlling the turning on and turning off of the electrodeless lamp; the high-frequency coupler is used for coupling electric energy of the active power factor corrector and the power output device to the lamp tube of the electrodeless lamp; the dimming circuit is connected with an externally connected dimming control circuit; when the externally connected dimming control circuit supplies a 0 to 10-volt direct current (VDC) dimming control voltage signal to the dimming circuit, the dimming circuit works and then converts the alternating voltage into a 18-volt direct voltage; and the HB0809 integrated circuit is connected to the half-bridge inverter oscillatory circuit and used for controlling the alternately turning on and turning off of a first metal oxide semiconductor (MOS) tube and a second MOS tube in the half-bridge inverter oscillatory circuit to set working frequency, ignition time and ignition frequency. By a dimming electrodeless lamp circuit, a dimming function of the high-power electrodeless lamp can be realized.

The invention discloses a device and a method for a rainfall test of a transmission line tower. The device comprises a tower, wires, nozzles, a water supply device and a power supply device. The wires are fixed in the tower, and the nozzles are located above the wires and fixed right under the tower. The power supply device supplies power to the wires, the nozzles are connected with the water supply device, and the tower and the wires are sprayed with water to simulate various states in the rain. The water supply device comprises a water pump and a water tank. The method for the rainfall test includes nozzles required in the test are selected to be fixed right under the tower, the power supply device supplies power for the wires, the water tank and the water pump are used for providing water for the nozzles which spray water to the tower and the wires to simulate various states in the rain to perform the rainfall test. The rainfall test provided by device and the method is wide in voltage ranges, adjustable in rainfalls and adjustable in acidity of the rainfalls, and is applicable to transmission line towers with a voltage class of over 110 kV (kilovolt)..

The invention relates to the technical field of electronic equipment, and provides a control chip, a control device and electronic equipment. The control chip comprises a wireless communication bare chip supporting a first power supply voltage to the maximum and a micro-control unit bare chip maximally supporting a second power supply voltage, being connected with the wireless communication bare chip so as to communicate with the wireless communication bare chip and supply power to the wireless communication bare chip; the first power supply voltage is the same as or different from the second power supply voltage. And the micro-control unit bare chip and the wireless communication bare chip are packaged into a system-on-chip. The control chip has the advantages of being high in integration level, small in occupied space, low in cost and capable of supporting a relatively wide power supply voltage range, and then the applicability of the control device is improved.

The invention relates to a non-isolation step-down LED drive circuit capable of adaptive power supply and a working method. The non-isolation step-down LED drive circuit comprises a rectification filter circuit and a control module, wherein the power supply end of the control module is connected with the output end of the rectification circuit through a resistor. An adaptive power supply circuit is arranged in the control module. The adaptive power supply circuit comprises a microprocessor unit, a step-down unit, a plurality of Pn junctions connected in series and an analog switch unit. The output end of the step-down unit is connected with the input ends of the Pn junctions in series, and the output end of the step-down unit serves as the voltage output end of the adaptive power supply circuit. Nodes are arranged among the Pn junctions, the nodes are connected with the switch input ends of the analog switch unit respectively, and the switch output ends of the analog switch unit are connected with one another and connected to the ground through a resistor. The power supply end of the processor unit obtains sampling voltage, and the control output ends of the processor unit are respectively connected with the control end of the analog switch unit.

The invention discloses a waterproof and antibacterial perforated graphene eyeshade. The eyeshade comprises an eyeshade body and eyeshade bandages, wherein the eyeshade body comprises a nano-silver coating film with an antibacterial effect, first acetate cloth, an FPC flexible circuit board, second acetate cloth and a nano waterproof coating from inside to outside; graphene heating coatings are laid on the upper surface of the FPC flexible circuit board, the graphene heating coatings are olive-shaped and distributed at the positions of the two eye sockets, and the graphene heating coatings arelocated at the upper end and the lower end of the eyeshade and connected to the positive electrode and the negative electrode of the power source through the FPC flexible circuit board. The hook-and-loop fastener velvet and a hook-and-loop fastener hook are sewn at the two ends of the eyeshade bandages respectively, the width of the hook-and-loop fastener velvet is 3-4 times that of the hook-and-loop fastener hook, a nose pad is arranged at the position, corresponding to the nose bridge, of the eyeshade body, the good plasticity is achieved, and a buffering pad is bonded to one face of the nose pad. The eyeshade has the advantages of being convenient to carry and wear, good in water resistance, free of bacterium breeding, and definite in physical therapy effect and the like.

The invention relates to an intelligent transfer system for industrial production. The intelligent transfer system comprises a transfer mechanism and a wireless communication terminal. The wireless communication terminal is in wireless connection with the transfer mechanism. According to the intelligent transfer system for industrial production, a driving motor controls a driving gear to move on driven teeth, equipment makes a conveying assembly to move in a horizontal position through a driving rod at the moment, a transmission gear rotates and moves on transmission teeth simultaneously, a transmission rod with a thread is made to rotate in a guide sleeve, movement in the horizontal direction and the vertical direction can be achieved through only one set of motor, in this way, the cost of the whole system is reduced, and the practicability of the equipment is improved; and more than that, in a signal amplification circuit, the type of an operational amplifier is OP90, the operational amplifier has the characteristics of being low in power consumption and broad in power voltage adaptive range, thus, the power consumption of the wireless communication module is reduced, and the practical value of the system is improved.

The invention discloses an intelligent-type power distribution cabinet for a power transmission system, and the cabinet comprises a cabinet body. The cabinet body is provided with a cabinet door, and the cabinet door is sequentially provided with a switch, a work indication lamp, a sound generation device, a handle, a display screen and a state indication mechanism from the top to the bottom. The cabinet enables a semispherical reflection plate to move towards the state indication lamp through the rotation of a drive motor in a strong light unit, thereby changing the propagation direction of light emitted by the state indication lamp towards the cabinet door, enabling the light intensity of the state indication lamp to be higher, and attracting more attention of a worker so as to carry out corresponding operation. Moreover, an integrated circuit in an audio output circuit is low in power consumption, is large in power voltage range, and is low in distortion, thereby improving the practicality and reliability of the audio output circuit. Meanwhile, the cabinet is small in number of external elements, reduces the production cost, and improves the market competiveness.

The invention relates to a low drop-out overcurrent protection circuit with controllable output. The overcurrent protection circuit comprises a main path, an auxiliary path, a reverse voltage protection circuit, a main and auxiliary path overcurrent switching and enabling inhibit control circuit, an efficiency adjustment resistor, an overcurrent sampling resistor and a limited current setting circuit; the overcurrent protection circuit has the functions of automatic overcurrent protection and output enabling / forbidding, is connected to a power entrance of a circuit in series, and can realize the functions of single event latchup resistance of satellite-bone equipment components and short circuit overcurrent protection of the circuit, thus having high practical value. The special application specific integrated circuit (ASIC) chip customized according to the low drop-out overcurrent protection circuit with controllable output well meets the application demands of satellite-bone equipment of a spacecraft and is beneficial to improvement of the equipment integration level; furthermore, the circuit overcurrent protection also has very strong universality for circuits besides the spacecraft.

The invention discloses a reference source and an integrated circuit thereof. The reference source comprises a starting loop, a mirror current source, a bias loop and a band-gap voltage source; the starting loop receives power output by a power supply and provides a starting bias current; the mirror current source provides two constant bias currents according to the starting bias current; the biasloop comprises a plurality of transistors, and the plurality of the transistors provide two constant bias voltages according to the two constant bias currents; and the band-gap voltage source outputsa reference output voltage according to the two constant bias currents and the two constant bias voltages.

The invention discloses a multifunctional inverter available for battery charging and drive, and relates to the electric technical field of alternating current (AC) and direct current (DC) mutual conversion. The multifunctional inverter available for the battery charging and the drive comprises a standard inverter which achieves DC to AC conversion, a common DC bus, a logic control port, an electromotor port, an energy storage port, an AC power source port, a DC power source port, an AC to DC conversion module, a first DC to DC conversion module, a second DC to DC conversion auxiliary module and a third DC to DC conversion auxiliary module. The multifunctional inverter available for the battery charging and the drive is highly integrated, and achieves all the functions of AC to DC conversion, DC to DC conversion and the DC to AC conversion.

The invention relates to an on-chip tristate signal detection device and a detection method thereof. The detection device includes a first current source, a second current source, a first switch, a second switch, a threshold comparison unit, and a digital control unit. The first current source is connected to the first end of the first switch, the second end of the first switch is connected to the first end of the second switch, and the second end of the second switch is connected to the second current source. The digital control unit controls the closing and / or opening of the first switch, the second switch to form two different topological structures. Based on one of the topologies, the threshold comparison unit first input receives a voltage associated with a tri-state input signal. The second input terminal of the threshold comparison unit receives a reference voltage, and compares the magnitude relationship between the relevant voltage and the reference voltage, so that the digital control unit can detect the state of the input signal based on the comparison result. The invention has low detection power consumption and high reliability of detection results, and can be widely used in the field of on-chip detection of chip interface signals.

The invention discloses a container energy storage variable-frequency air conditioning unit for a direct-current power supply ship. The air conditioning unit comprises a direct-current power supply access port and a compressor module. The direct-current power supply access port is electrically connected with the compressor module, the compressor module comprises a compressor and a direct-current to alternating-current conversion device electrically connected with the compressor, and the direct-current to alternating-current conversion device is used for converting a direct current into an alternating current and transmitting the alternating current to the compressor. The direct-current power supply access port is arranged to access a direct-current power supply to the air conditioning unit, and the direct-current to alternating-current conversion device is arranged to convert the direct current into the alternating current and transmit the alternating current to the compressor so thatpollutant emission is effectively reduced, and a noise is low; and the alternating current output by the direct-current to alternating-current conversion device is only supplied to the compressor so that the demand for the alternating current is small, the size of the corresponding direct-current to alternating-current conversion device is small, the direct-current to alternating-current conversion device can be integrated in the air conditioning unit, independent arrangement is not needed, a space of the container is not occupied, and a space utilization rate of the container is effectively increased.