48results about How to "Increase input current" patented technology

The invention provides a pixel drive circuit and a drive method thereof, a display panel and a display device and belongs to the technical field of display. The pixel drive circuit comprises a data write-in module, a mirror drive module and a light-emitting element. The mirror drive module comprises a first transistor and a second transistor; the gate of the first transistor and the gate of the second transistor are electrically connected to a first node; a first electrode of the first transistor and a first electrode of the second transistor are electrically connected; the threshold voltage of the first transistor equals the threshold voltage of the second transistor; the width-length ratio of the first transistor is A and the width-length ratio of the second transistor is B, wherein A<B<=20A; the light-emitting element is used for emitting light in response to a drive current. Compared with the prior art, the charging speed of data signals can be increased, the working efficiency ofthe pixel drive circuit is increased, the influence of a leak current on a drive current can be greatly reduced and the working performance of the pixel drive circuit is improved.

The invention discloses a charging method, a charging controller and a charging system . The charging method includes the following steps: when a power receiving device is charged by a charging device through a transmission cable with a charging voltage, a current passing through a battery charging circuit is detected by a sensor. The charging information associated with the current is sent to a transmission module of the power receiving device through a monitoring program, and then the charging information is sent back to the charging device by the transmission module through the communication channel of the transmission cable. The transmission module of the charging device determines whether the charging information is satisfied with the stop condition. If so, the charging voltage is maintained to charge the power receiving device continuously. If not, the output charging voltage is gradually adjusted until the stop condition is satisfied.

The invention provides a stator coil of a direct current motor and a stator coil insulation integration method, and relates to the technical field of the direct current motor. The stator coil of the direct current motor comprises multiple numbers of turns of buses, insulating paper bands and a silicone rubber insulating band, wherein the multiple numbers of turns of buses are configured into the coil appearance of the stator coil of the direct current motor; the insulating paper bands are placed between adjacent two turns of buses in a cushion manner; and the outer sides of multiple numbers ofturns of buses are bundled with the silicone rubber insulating band. The stator coil insulation integration method is used for manufacturing the stator coil of the direct current motor; and by virtueof the stator coil of the direct current motor, the motor input current can be highly increased without changing the motor appearance, so that the motor can output higher power and torsion, and the service life of the motor is not shortened.

The present invention provides a wireless charging control circuit and a wireless charging device, including: a power supply and a wireless transmitting circuit, the first end of the wireless transmitting circuit is connected to the input terminal of the power supply, the second end of the wireless transmitting circuit is connected to the grounding terminal of the power supply, and the wireless The charging control circuit also includes: a temperature sensing circuit, the temperature sensing circuit includes at least one thermistor, the first end of the temperature sensing circuit is connected to the power input end; a shunt circuit, the first end of the shunt circuit is connected to the power input end, and the shunt circuit The second end of the control circuit is grounded; the control circuit, the first end of the control circuit is connected to the second end of the temperature sensing circuit, the second end of the control circuit is connected to the third end of the shunt circuit; the control circuit is used for the resistance of the temperature sensing circuit When the value is greater than the first target resistance value or less than the second target resistance value, the resistance of the shunt circuit is adjusted to increase the input current of the shunt circuit and decrease the current of the wireless transmitting circuit. The embodiments of the present invention can improve the safety of the wireless charging device.

The present invention provides an LED drive chip and circuit that improves the compatibility with a thyristor dimmer, the chip is connected to a peripheral circuit including a thyristor dimmer and an input current sampling resistor, including a hysteresis comparator, a Transconductance module, a first NMOS transistor, a first PMOS transistor, a second PMOS transistor, a second NMOS transistor, a compensation capacitor, an isolation capacitor, a first comparator, and a driving module. The present invention does not increase the input current by directly pulling down the bus voltage Vin, and the increased input current is still part of the output current, so compared with the prior art shown in Figure 1, the efficiency is significantly improved, especially when the output current is small In addition, the present invention does not need to use high-voltage MOS tubes and does not need to add additional chip pins, thereby reducing costs.

The invention discloses a piezoelectric ceramic driving device. The piezoelectric ceramics driving device comprises a low voltage amplification circuit and four reverse high voltage operation amplification circuits. The output of the low voltage amplification circuit is connected to input terminals of a first reverse high voltage amplification circuit and a second reverse high voltage amplification circuit. The output terminals of the first reverse high voltage amplification circuit and the second reverse high voltage amplification circuit are connected to a positive electrode of the piezoelectric ceramic input terminals of a third reverse high voltage amplification circuit and a fourth high voltage amplification circuit. The output terminals of the third reverse high voltage amplification circuit and the fourth reverse high voltage amplification circuit are connected to the negative electrode of the piezoelectric ceramic. An input signal flows out through amplification by the low voltage amplification circuit and is inputted into the first reverse high voltage amplification circuit and the second reverse high voltage amplification circuit to go through reverse high voltage amplification and then is inputted into the positive electrode of the piezoelectric ceramic and the input terminals of the third reverse high voltage amplification circuit and the fourth reverse high voltage amplification circuit to go through reverse high voltage amplification and then the input signal is inputted into the negative electrode of the piezoelectric ceramic. As a result, amplified signals which are amplified for hundreds of times are formed on two sides of the piezoelectric ceramics. The piezoelectric ceramics driving device and driving method adopt multiple high voltage operation amplifiers which are connected in parallel to perform output in order to improve output current and reduce the amount of heat generated by each high voltage operation amplifier.

The invention provides an embedded type double-electron-beam terahertz wave-return oscillator; the embedded type double-electron-beam terahertz wave-return oscillator comprises a metal waveguide, an electron gun double-electron beam cathode, a plurality of double semicircular groove grating structures, a drift region, an output port and double-electron-beam collector, wherein one end of the metalwaveguide is an injection end and is used for electron beam input, and the other end of the metal waveguide is an output end for electron beam output; the electron gun double-electron beam cathode isarranged at the metal waveguide injection end and forms a wave-beam interaction zone with the metal waveguide inner space; the plurality of double semicircular groove grating structures are arranged at equal intervals in the metal waveguide; the drift region is arranged between the metal waveguide injection end and the middle part of the metal waveguide and used for dividing the plurality of double semicircular groove grating structures into a first segment double semicircular groove grating structure and a second segment double semicircular groove grating structure; and the output port is arranged in the metal waveguide injection end and used for power output after the beam-wave interaction; and double-electron-beam collector is arranged at the metal waveguide output end and is used for recovering the electron beams after the beam-wave interaction;.

The invention relates to a constant-voltage and constant-current hybrid power supply system for a submarine observation network, which includes a monitoring and control unit and a power supply unit. The monitoring and control unit is composed of a current sensor, a relay group and a control module. The control module judges the working mode of the submarine observation network through the input current of the current sensor, and selects an appropriate power supply mode by changing the state of the relay group. The power supply unit consists of a Zener diode and a current-voltage DC conversion module, which are used as two power supply modes under the light load and heavy load modes of the submarine observation network respectively. The present invention can monitor the input current of the submarine main equipment in real time, and automatically change the power supply mode according to the input current level, so the input current range is large, the use flexibility is high, and it can be applied to the submarine observation network with two transmission modes of constant voltage and constant current. And the reliability is high, which greatly increases the service life of the submarine backbone equipment.

The invention proposes a power supply for a 5G communication base station with high driving power. The power supply for the 5G communication base station includes a PFC circuit connected to the power supply equipment. The PFC circuit includes a power amplifier module, and the power amplifier module drives two MOS transistors through the IC chip to increase the input current. Effectively improve the power factor value under the premise of low cost.

The present disclosure provides an electronic transformer and LED lamp system with peak current control for low power LED lamps. The electronic transformer (1) is configured to provide output power for operating the LED lamp (2), wherein the electronic transformer (1) comprises: voltage input ports (P1, P2) configured to connect the electronic transformer (1) to an AC power source ), a rectifier circuit (3) for converting AC power received at the voltage input ports (P1, P2) into DC power, and a boost circuit (3) comprising a boost circuit configured to generate a bus voltage (V-bus) and configured to switch boost A first stage (10) of an on / off switch circuit of the voltage circuit, wherein the switch circuit is configured to disconnect the boost circuit if the bus voltage (V-bus) is higher than a first threshold (V-bus-H) , if the bus voltage (V-bus) is lower than the second threshold (V-bus-L), the boost circuit is turned on.