46results about How to "Improve boost efficiency" patented technology

A boosting circuit comprises a first boosting cell row and a second boosting cell row. The boosting circuit further comprises an analog comparison circuit for comparing the potential of boosting cells on the same stage, and selecting and outputting the lower or higher of the potentials. The potential of an N well is controlled using the output potential of the analog comparison circuit. Thereby, the amplitude of an N well potential can be suppressed, and a single N well region can be shared.

A light emitting diode (LED) backlight driving circuit is disclosed in the present disclosure. The LED backlight driving circuit in configured to power an LED backlight module, and comprises: a voltage stabilizing circuit, being configured to receive an input voltage and filter the input voltage to output a stabilized direct current (DC) voltage; a first boost circuit and a second boost circuit connected with the voltage stabilizing circuit respectively, being configured to receive the stabilized DC voltage and boost the stabilized DC voltage for output to the LED backlight module; and a selection control circuit, being configured to alternately select one of the first boost circuit and the second boost circuit to power the LED backlight module. The LED backlight driving circuit of the present disclosure can improve the voltage boosting efficiency and reduce the cost, so it is of great utility.

The invention relates to a U-type sail structure which comprises a sail body. The sail body is connected with a sail base through a sail mast. A sectional structure is formed by the cross section of the sail body, and is of a U-shaped structure formed by integrally connecting a pair of body portions, a pair of arch portions and a pair of guide round portions. The body portions, the arch portions and the guide round portions are symmetrically arranged with the rotary axis of a sail as a center. The U-type sail structure is simple, clean and tidy in appearance and high in maximum pneumatic lift coefficient. The maximum lift coefficient of the sectional structure of the sail body can be above 3.0, and is more than 2.3 times that of a common wing type, and the boosting efficiency of the sail can be greatly improved. The aerodynamic force performance optimization design technology is adopted in the sectional structure of the sail body. On the premise of not increasing the complexity of the sail structure, the lift efficiency of the sail is effectively improved through the section line type design of the sail. Compared with a multi-section combined type wing section, the U-type sail structure has the beneficial effect of being simple.

The invention relates to an ultra-low-voltage boosting system and a control method thereof. The ultra-low-voltage boosting system comprises an open-circuit voltage sampling holder, a polarity detection and control signal generator, a first-level switch tube, a flyback transformer, a rectifier bridge, an energy storage element and a singlechip, wherein the open-circuit voltage sampling holder is connected with a weak-energy output source or an energy converter and is also connected with the singlechip, the polarity detection and control signal generator and the flyback transformer; the first-level switch tube is connected with the polarity detection and control signal generator and the flyback transformer; the flyback transformer is connected with the rectifier bridge; and the rectifier bridge is connected with the energy storage element. By combining the ultra-low-voltage boosting system with the control method thereof, the defect that the circuit produced by a conventional process has difficulty in adapting to the working under a millivolt-level voltage in the field of environmental energy collection can be effectively avoided, and the defects that the boosting multiple and the boosting efficiency are very difficultly considered simultaneously in the prior art and the problem that an positive-negative bipolar input source is unresolved can be avoided.

The invention provides a booster of an implantable medical device and an implantable medical system. The booster is used for installing the implantable medical device and a push member and ejecting the push member, wherein the booster includes a push member mounting part, the push member mounting part includes at least two hook arms, and push member installation space for installing the push member is formed in the radial inner side of the at least two hook arms; the hook arms extends substantially in the ejection direction of the push member so as to form a cantilever structure which adopts the distal ends of the hook arms as free ends; and when a far-to-near force is applied to the distal ends of the hook arms, the distal ends of the hook arms move radially and outwards so as to make thepush member installation space larger, and the push member can be released from the push member installation space or be loaded into the push member installation space. When implantation is completed, the booster can be used for releasing the push member and installing a new push member, and the booster is not a disposable product, but can be reused, so that the application cost is low.

The invention discloses a charge pump output voltage control circuit and method, the circuit comprises a clock frequency adjusting module, an oscillator and a charge pump, the clock frequency adjusting module is connected with the oscillator, and the oscillator is connected with the charge pump; the clock frequency adjusting module is used for outputting a corresponding frequency adjusting signal to the oscillator according to the working state of the charge pump; the oscillator is used for adjusting the frequency of the clock signal according to the frequency adjusting signal and outputting the clock signal after frequency adjustment to the charge pump; the charge pump is used for outputting a bias voltage according to a received clock signal and an input voltage. The clock frequency adjusting module outputs the frequency adjusting signal according to the working state of the charge pump, the oscillator adjusts the frequency of the clock signal according to the frequency adjusting signal and then sends the frequency to the charge pump, the charge pump outputs the bias voltage according to the clock signal, and the frequency of the clock signal can be adjusted according to the working state of the charge pump; therefore, the boost time of the charge pump is shortened, and the boost efficiency of the charge pump is improved.

The invention provides a 48V power supply system applied to a photovoltaic power generation recreational vehicle. The 48V power supply system comprises a generator, a 12V starting battery, a bidirectional DCDC module, a lithium battery, a control module, a charging and inverting integrated machine, a photovoltaic charging controller, a smart home module and a photovoltaic cell panel. Positive andnegative electrodes of an output end of a generator are connected to the positive and negative electrodes of the 12V starting battery through cables; the positive electrode and the negative electrodeof the 12V starting battery are connected to the 12V positive electrode and the 12V negative electrode of the bidirectional DCDC module through the cables; a 48V side positive electrode and a 48V sidenegative electrode of the bidirectional DCDC module are connected to the positive electrode and the negative electrode of the lithium battery; the positive and negative electrodes of the lithium battery are connected with the positive and negative electrodes of the 48V sides of the charging and inverting integrated machine and the photovoltaic charging controller; and the positive electrode and the negative electrode of the photovoltaic cell panel are connected to an input port of the photovoltaic charging controller. A line current can be greatly reduced, and a spontaneous combustion phenomenon caused by large-current heating is effectively avoided.

The invention provides a level transfer circuit. The level transfer circuit comprises a signal input end, a first high-level input end, a second high-level input end, a low-level input end, a pre-output end, a storage capacitor, a pre-charging module and a boost module; a first end of the storage capacitor is connected with the pre-output end, the control end of the pre-charging module is connected with the input end of the level transfer circuit, a first input end is connected with the input end of the first high-level input end, a second input end is connected with the low-level input end, a first output end is connected with a first end of the storage capacitor, a second output end is connected with the second end of the storage capacitor, the control end of the boost module is connected with the input end of the level transfer circuit, the input end is connected with the second high-level input end, and the output end is connected with the second end of the storage capacitor. The invention further provides a driving method of the level transfer circuit, a grid drive circuit and a display device. The level transfer circuit can improve boost efficiency.

The invention provides a voltage boosting circuit and a nonvolatile memory, aiming to solve the problem of low boosting efficiency of a voltage boosting circuit using a charge pump used at present. The voltage boosting circuit comprises a power supply, an energy conversion unit, an output unit and a control unit which are sequentially connected with one another, wherein the control unit is connected to the energy conversion unit; the control unit comprises a voltage division branch and a comparator which are connected; the voltage division branch is used for dividing the output voltage of the output unit to obtain component voltage; the component voltage is input into a negative input end of the comparator; preset reference voltage is input into a positive input end of the comparator; the output of the control unit is connected to the energy conversion unit. The voltage boosting circuit is capable of boosting voltage supplied by a power supply to required voltage; compared with the voltage boosting circuit using the charge pump, the voltage boosting circuit has the advantages that the output voltage is just detected by the voltage division branch, the energy conversion unit is controlled by the control unit according to different conditions, and the voltage boosting circuit is few in charge transmission stages and high in voltage boosting efficiency.

The invention, which relates to the technical field of obstetric apparatus, discloses an obstetric boosting device for livestock, thereby solving a problem of low flexibility of the existing obstetricboosting device. The device comprises a first push pipe; a second push pipe which is transversely arranged is movably arranged outside the first push pipe in a sleeving manner; positioning mechanismsare arranged on the two sides of the right end of the second push pipe correspondingly; the first push pipe is connected to the interior of the second push pipe through the positioning mechanisms; avertically-arranged storage box is welded to the left end of the second push pipe; a vertically-arranged storage rod is arranged in the storage box; and connecting mechanisms are arranged at the two ends of the storage box correspondingly. Therefore, livestock can be helped give birth efficiently; the obstetric parts of the device can be adjusted flexibly; the size of the obstetric boosting devicecan be adjusted simply and conveniently; the working performance is high; and use becomes convenient.

The invention provides a direct current (DC)-DC converter, which is suitable for generating power supply voltage needed by a load, and comprises a step-down circuit and a booster circuit, wherein the step-down circuit is used for receiving DC input voltage and performing step-down treatment on the DC input voltage according to a first control signal so as to output the power supply voltage, or directly outputting the DC input voltage; and the booster circuit is used for receiving the power supply voltage or the DC input voltage output by the step-down circuit and performing boosting treatment on the DC input voltage which is output by the step-down circuit according to a second control signal so as to output the power supply voltage to the load, or directly outputting the power supply voltage which is output by the step-down circuit to the load.

The invention discloses a booster circuit, which comprises an inductor, an output capacitor, a first switch group, a second switch group and a digital power controller, the switch tubes in the first switch group are connected in parallel, and the switch tubes in the second switch group are connected in parallel; the inductor is connected with the first end of the first switch group and the first end of the second switch group. The second end of the first switch group is connected with the first end of the output capacitor; the second end of the output capacitor is grounded; the second end of the second switch group is grounded; and the digital electric controller is used for controlling the switch tubes in the second switch group to be switched on after all the switch tubes in the first switch group are switched off for a first preset time, or controlling the switch tubes in the first switch group to be switched on after all the switch tubes in the second switch group are switched off for the first preset time. The situation that switch tubes of the first switch group and the second switch group are switched on at the same time is avoided, the boost efficiency of the boost circuit is improved, and meanwhile the boost circuit is prevented from being damaged by series current.

A light emitting diode (LED) backlight driving circuit is disclosed in the present disclosure. The LED backlight driving circuit in configured to power an LED backlight module, and comprises: a voltage stabilizing circuit, being configured to receive an input voltage and filter the input voltage to output a stabilized direct current (DC) voltage; a first boost circuit and a second boost circuit connected with the voltage stabilizing circuit respectively, being configured to receive the stabilized DC voltage and boost the stabilized DC voltage for output to the LED backlight module; and a selection control circuit, being configured to alternately select one of the first boost circuit and the second boost circuit to power the LED backlight module. The LED backlight driving circuit of the present disclosure can improve the voltage boosting efficiency and reduce the cost, so it is of great utility.