31results about How to "With soft start function" patented technology

The invention discloses a power supply management chip for controlling a two-phase Buck circuit having a current equalization function based on COT. The power supply management chip is provided with a power supply input pin, an output voltage pin, a grounding pin and two switch SW pins. The chip is internally provided with a reference circuit module, a comparator module, a voltage ring module, a clock generation module, a control logic and soft start module, a constant conduction time generation module, a ripple compensation module, a current sampling module, a current equalization module, a driving module and four in-chip switching tubes. According to the power supply management chip, multiple asymmetric factors can be effectively overcome to realize current equalization so that the precision is high, the power supply management chip can work under high switching frequency, and energy loss is less and area occupation is smaller in comparison with the conventional method of digital control matching duty ratio.

The invention discloses a digital program-control constant current source, and belongs to the technical field of electronic equipment. The digital program-control constant current source structurally comprises an output module (9) and a front panel (11), and is characterized by further structurally comprising a single chip microcomputer module (1), a display module (2), an indicator lamp module (3), a key module (4), an encoder module (5), a program control (PC) module (6), a soft starting module (7), a digital-to-analog conversion module (8) and a sampling monitoring module (10). The digital program-control constant current source is based on single chip microcomputer control, and has the advantages of being rich in function, convenient to upgrade, capable of achieving program control and the like; in addition, the digital program-control constant current source has the functions of over-temperature alarming, low-pressure alarming, soft starting and the like, and is high in safety and wide in application range.

The invention discloses a multistage intelligent charging method which is suitable for rechargeable batteries. The multistage intelligent charging method comprises a diagnosis step of detecting the voltage of a battery, a soft starting step of enabling charging current to slowly rise from low to high, steps of performing charging under constant current I, charging under constant current II, charging under constant current III, charging under constant voltage, full charging and recharging, and steps of performing pulse devulcanization, precharging and high-voltage restoration. The multistage intelligent charging method has the precharging function and the soft starting function, so that damage, caused by high current, to the normal battery can be alleviated, and the service life of the battery can be prolonged; due to the devulcanization function, the capacity of a battery which is severely vulcanized can be improved; by virtue of the restoration function, the capacity of an aged battery can be recovered.

The invention discloses a capacitor charge pump, which comprises a booster loop consisting of flying capacitors and a switch, wherein the booster loop has a input end, an output end and a grounding end. The capacitor charge pump is characterized in that: the booster loop comprises a first flying capacitor, a second flying capacitor, a third flying capacitor and a switching program; and after the input end of the booster loop is connected with an input voltage, the flying capacitors and the switch circularly operate according to a four-step switching program, and an output voltage is 1.2 times that the input voltage is obtained at the output end. The booster loop of the 1.2-time boosting capacitor charge pump is simple and only needs three flying capacitor, and when the capacitor charge pump is used in light emitting diode backlight drive, the efficiency of the capacitor charge pump is high.

The invention provides an over-current protection system for satellite load input terminal. The system includes an over-current protection circuit connected with the satellite load input terminal andused for cutting off current output and then performing delayed restoration of current output if detecting the input current of the load terminal surpasses a predetermined value when the satellite load terminal meets faults including short circuit, over-current or the like, and cutting off current output permanently if the input current of the load terminal still surpasses the predetermined valueif the above process is repeated for a preset number of times. According to the invention, the current does not surpasses the predetermined value when short circuit occurs at the load terminal and interference to a bus is avoided and the integral satellite safety is not affected; bus stability can be ensured when a load meets short circuit, over-current or the like and no interference is generatedto other electricity using loads and the integral satellite safety is ensured. The system provided by the invention has a function of soft starting. Besides, current input can be restored through commands. According to the invention, soft starting and over-current protection are integrated together, power devices are not increased and only a part of control circuits is added.

The invention discloses a transmission system with a permanent magnet speed regulation clutch. The transmission system comprises a motor, a clutch and load equipment. A driving disk of the clutch is connected with an output shaft of the motor, a driven disk of the clutch is connected with an input shaft of the load equipment, a conductor disk is fixedly installed on the front side of the driving disk, a permanent magnet is fixedly installed on the driven disk, a magnetic pole of the permanent magnet is positioned on the front side of the driven disk, the front side of the driving disk and the front side of the driven disk are coaxially and oppositely arranged and are not contacted, a gap is positioned between the conductor disk and the magnetic pole of the permanent magnet, and the motor or the load equipment is positioned on the adjustable slide base. The transmission system ahs the advantages of being soft-start, capable of prevent rotation plug, capable of reducing vibration, capable of regulating speed, simple in structure, easy to install and the like.

A control system applied to a brick machine, including an MPI bus and a main control module and a control panel connected to the MPI bus, and also includes a variable vibration module for controlling a vibration device, an anti-jamming module for receiving action feedback signals, and The output surge module used to issue action commands, the variable vibration module, the anti-interference module and the output surge module are respectively connected to the main control module. The variable vibration module includes a power supply, two motors, a frequency converter, and is connected between the power supply and the frequency converter. A contactor, a braking unit electrically connected to the frequency converter, two air switches and two air switch contacts, the two air switches are respectively connected between the frequency converter and the two motors, and the two air switch contacts are connected in series and connected to the frequency converter. The main control module is used for program control, and the anti-jamming module and output surge module are used for signal transmission control with each part of the brick machine, which can realize the automatic production control of the brick machine; the variable vibration module has a soft start function, which can realize the two motors. Synchronous work.

The invention provides a quick response loop compensation circuit, a loop compensation chip and a switching power supply. The quick response loop compensation circuit comprises a variable output slew rate differential amplifier, a dynamic current induction operational amplifier, a resistor R1, a resistor R2 and a capacitor CC. When the input voltage of the variable output slew rate differential amplifier is in a small signal interval, the current fed back by the dynamic current induction operational amplifier is zero or very small, and the output slew rate of the variable output slew rate differential amplifier is not changed. When the variable output slew rate differential amplifier is out of the small signal interval, the dynamic current induction operational amplifier outputs dynamic response current to the variable output slew rate differential amplifier, so that the slew rate of the variable output slew rate differential amplifier is increased, and the output impedance of the variable output slew rate differential amplifier is reduced. Under the condition that the loop stability and the dynamic performance are not sacrificed, loop normalization of switching power supplies of different specifications is achieved, and manpower and material resources needed by loop debugging are saved. When the switching power supply is started, the stress is reduced, and the output voltage overshoot phenomenon is avoided.

The invention discloses a torque limiting coupler with a soft start function. The torque limiting coupler comprises a rotor, wherein an inner rotor is arranged at a driving end in a sleeving manner; an outer ring is connected with a load end; a plurality of first transmission devices and a plurality of second transmission devices are arranged on the inner rotor; the first transmission devices areuniformly distributed along the outer circumference of the inner rotor; first thrust rods are arranged on the inner side, opposite to the first transmission devices, of the outer ring; each second transmission device comprises a thrust end and a counterweight end; the thrust ends are positioned on the outer circumference of the inner rotor; the thrust ends are uniformly distributed along the outercircumference of the inner rotor and are crossed with the first transmission devices; and second thrust rods are arranged on the inner side, opposite to the end parts of the second transmission devices, of the outer ring. According to the torque limiting coupler, the torque of the driving end is transmitted to the load end through the transmission devices arranged on the inner rotor; when a rotating shaft of a motor rotates, the torque of the load end can be smoothly increased, and rigid impact is avoided; and after the load end conducts normal operation, enough large torque can be transmitted, and equipment and mechanisms of a transmission chain can be protected.

The invention discloses a quick charging circuit with a polarity conversion type charging function. The quick charging circuit with the polarity conversion type charging function comprises a first input end and a second input end, wherein the first input end and the second input end are connected to two input ends of a linked switch protection circuit respectively, two output ends of the linked switch protection circuit are connected to a polarity conversion circuit after passing through a power supply filter circuit, a silicon controlled voltage regulating circuit, a rectifying circuit, a charging and discharging circuit, an IGBT switching circuit and a silicon controlled control circuit, an automatic control circuit is further connected between the first input end and the second input end, and the automatic control circuit comprises an auxiliary power supply control module and is connected with a phase detection and phase shifting trigger circuit control module which is connected with a silicon controlled voltage regulating module through a main control circuit. Compared with an ordinary charger, the quick charging circuit with the polarity conversion type charging function has the advantages that the charging speed is improved by 5-8 times when the quick charging circuit is used for charging a rechargeable battery, and the polarity conversion type charging function is achieved, namely that a positive charging effect is achieved under the condition that either the positive electrode or the negative electrode of a rechargeable battery is connected to the quick charging circuit.

The invention relates to a soft starting switch circuit and an electronic apparatus. The soft starting switch circuit comprises an input end, an output end, a first transistor, a second transistor, a third transistor, a charge energy storage unit, a first resistor and a second resistor. When the input voltage received on the input end changes into high potential from low potential, the second transistor is connected to provide a charging path so that the charge energy storage unit can store electric energy. The voltage on the control end of the first transistor gradually decreases, so that the first transistor is connected gradually to send the input voltage of the input end to the output end to serve as output voltage. When the input voltage received on the input end changes into low potential from high potential, the third transistor is connected to provide a discharging path so that the charge energy storage unit can release the stored electric energy.

A switching power converting apparatus includes a voltage conversion module, a detecting unit, and a switching signal generating unit. The voltage conversion module converts an input voltage into an output voltage associated with a secondary side current, which flows through a secondary winding of a transformer and is generated based on a switching signal. The detecting unit generates a detecting signal based on the output voltage and a predetermined reference voltage. The switching signal generating unit generates the switching signal based on the detecting signal and an adjusting signal so that the secondary side current is gradually increased during a start period of the switching power converting apparatus.

When, according to the invention, a drive unit for trailers or caravans is ar not ranged such that it comprises a chassis (2) with crawler sections (3), a coupling device (4) having first and second coupling parts (28, 29), said second coupling part (29) being arranged on the hitch triangle (30) behind the normal hitch coupling and behind the nose wheel, and the drive unit additionally comprises means for steering and manoeuvring the unit, a good weight distribution is achieved between main wheel and drive unit, so that it is easy to control the placing of the trailer or of the caravan, without having to worry about the risk of colliding with the neighbour or damaging one's own vehicle.

The invention discloses an automatic exhaust system having a soft start function and used for a poultry house. The automatic exhaust system is characterized by mainly comprising an exhaust fan M, a detection circuit, an amplifier P1, an amplifier P2, a capacitor C3 with the negative pole connected with the positive pole of the amplifier P1 and the positive pole connected with the detection circuit, a capacitor C4 with the negative pole connected with an output end of the amplifier P1 and the positive pole connected with the positive pole of the capacitor C3 through a resistor R4, a capacitor C2 with the positive pole connected with the positive pole of the capacitor C3 and the negative pole connected with the negative pole of the amplifier P1 and the like. The automatic exhaust system can filter out interfering signals mixed in detection signals to increase the cleanliness of the detection signals, so that the work of the exhaust fan can be controlled more accurately, the poultry house is effectively ventilated, the quality of air in the poultry house is improved, and livestock feeding is facilitated. The automatic exhaust system has the soft start function, so that electronic components can be well protected from being damaged by surge current.

The invention discloses a transient power boosting device and a transient power boosting method based on ruthenium super-capacitors. The device comprises a storage battery, an isolating diode, a switch, a charging control module, a ruthenium super-capacitor set, an activated carbon super-capacitor set, an output controller and a starting control module, wherein the output controller has a soft starting function. By utilizing the advantage of large transient output current of the ruthenium super-capacitors and combining the ruthenium super-capacitors with common super-capacitors, the transient high-power output is realized.

The invention discloses a half hydraulic coupler. The half hydraulic coupler comprises an outer shell, an input shaft, an output shaft, an outer rotor and an inner rotor, wherein the outer end of the input shaft and the outer end of the output shaft extend outside the outer shell, the outer rotor is installed in the outer shell and fixedly connected with the output shaft, and the inner rotor is sleeved with the outer rotor and fixedly connected with the input shaft; the inner wall of the outer rotor is a round reducing hook face which is equally divided into a plurality of equally-divided hook face bodies, the reducing size and the direction of the equally-divided hook face bodies are the same, a plurality of movable tooth grooves are formed in the outer wall of the inner rotor, movable teeth are embedded into the corresponding movable tooth grooves in a one-to-one manner, the bottoms of the movable tooth grooves are communicated with a high-pressure oil inlet, and outer ends of the movable teeth face the hook face of the outer rotor. The half hydraulic coupler has the beneficial effects of being wide in speed regulating scope, high in efficiency, small in size and small in weight; the rotating-speed difference is avoided during full-power output power, and meanwhile the soft starting function and outer load impact isolation performance are achieved; as the working efficiency of the half hydraulic coupler is high, the heating amount during working is less, and the half hydraulic coupler has the beneficial effect of being small in number of additional device, high in reliability, low in cost and the like.

The invention provides a fast response loop compensation circuit, a loop compensation chip and a switching power supply. The fast response loop compensation circuit includes a variable output slew rate differential amplifier, a dynamic current sensing operational amplifier, a resistor R1, a resistor R2 and a capacitor C C . When the input voltage of the variable output slew rate differential amplifier is in the small signal range, the current fed back by the dynamic current sensing operational amplifier is zero or very small, and the output slew rate of the variable output slew rate differential amplifier is not changed. When the variable output slew rate differential amplifier is outside the small signal range, the dynamic current sensing operational amplifier outputs a dynamic response current to the variable output slew rate differential amplifier, increasing its slew rate and reducing the output impedance. The present invention realizes the normalization of the loops of switching power supplies of different specifications without sacrificing the loop stability and dynamic performance, and saves manpower and material resources required for loop debugging. Reduce stress and avoid output voltage overshoot during switching power supply startup.

The invention discloses a magnetic isolation signal feedback device for space power supply control, which belongs to the technical field of space power supplies, and is characterized in that a feedback signal generation circuit realizes sampling and signal conversion of secondary side output voltage and load current of an isolation power supply, generates characteristic signals reflecting the output voltage and current, and realizes an auxiliary source self-lifting function of the circuit; after reference comparison of output characteristic signals is achieved, the output characteristic signals are converted into error signals reflecting topological secondary side output voltage and load current of the isolated power supply, and signal transmission from the secondary side characteristic signals to the primary side in an isolated mode is achieved through a magnetic isolation circuit. The magnetic isolation circuit controls the conduction time and energy storage of a secondary winding of the signal isolation transformer, transmits an error signal to a main winding end of the signal isolation transformer, and completes the signal isolation transmission of the secondary side output voltage and load current characteristics of the isolation power supply. The feedback signal demodulation circuit demodulates the error signal, and the generated error signal is directly proportional to the output voltage and the load current of the isolated power supply.

The invention discloses a multistage intelligent charging method which is suitable for rechargeable batteries. The multistage intelligent charging method comprises a diagnosis step of detecting the voltage of a battery, a soft starting step of enabling charging current to slowly rise from low to high, steps of performing charging under constant current I, charging under constant current II, charging under constant current III, charging under constant voltage, full charging and recharging, and steps of performing pulse devulcanization, precharging and high-voltage restoration. The multistage intelligent charging method has the precharging function and the soft starting function, so that damage, caused by high current, to the normal battery can be alleviated, and the service life of the battery can be prolonged; due to the devulcanization function, the capacity of a battery which is severely vulcanized can be improved; by virtue of the restoration function, the capacity of an aged battery can be recovered.

The invention relates to the field of portal crane swing equipment, in particular to a portal crane swing mechanism driving system which comprises a motor. And the motor is connected with the speed reducer through a torque-limiting permanent magnet coupling. According to the invention, a limit torque limiter is replaced by the torque-limiting permanent magnet coupling; the whole driving system ismore sensitive in protection action, meanwhile, automatic recovery can be achieved, damage to parts is reduced or avoided, meanwhile, a novel torque limiting type permanent magnet coupler is adopted,the driving system can have the soft start function, and the stability of the whole system is better guaranteed.

The invention discloses a half hydraulic coupler. The half hydraulic coupler comprises an outer shell, an input shaft, an output shaft, an outer rotor and an inner rotor, wherein the outer end of the input shaft and the outer end of the output shaft extend outside the outer shell, the outer rotor is installed in the outer shell and fixedly connected with the output shaft, and the inner rotor is sleeved with the outer rotor and fixedly connected with the input shaft; the inner wall of the outer rotor is a round reducing hook face which is equally divided into a plurality of equally-divided hook face bodies, the reducing size and the direction of the equally-divided hook face bodies are the same, a plurality of movable tooth grooves are formed in the outer wall of the inner rotor, movable teeth are embedded into the corresponding movable tooth grooves in a one-to-one manner, the bottoms of the movable tooth grooves are communicated with a high-pressure oil inlet, and outer ends of the movable teeth face the hook face of the outer rotor. The half hydraulic coupler has the beneficial effects of being wide in speed regulating scope, high in efficiency, small in size and small in weight; the rotating-speed difference is avoided during full-power output power, and meanwhile the soft starting function and outer load impact isolation performance are achieved; as the working efficiency of the half hydraulic coupler is high, the heating amount during working is less, and the half hydraulic coupler has the beneficial effect of being small in number of additional device, high in reliability, low in cost and the like.

The present invention discloses a soft-start birdhouse automatic exhaust system based on a bias amplify circuit, and the system is characterized by mainly consisting of an exhaust fan M, a detection circuit, an amplifier P1, an amplifier P2, the bias amplify circuit connected with the detection circuit, a capacitance C3, a capacitance C4, etc.; the negative pole of the capacitance C3 is connected with the positive pole of the amplifier P1, and the positive pole is connected with the bias amplify circuit; and the negative pole of the capacitance C4 is connected with the output terminal of the amplifier P1, and the positive pole is connected with the positive pole of the capacitance C3 though a resistance R4. The system can filter interference signals from a detection signal, increase the cleanliness of the detection signal and amplify the detection signal without distortion, thereby making the exhaust fan under more accurate control while it is in motion, ventilating the birdhouse more effectively, improving the quality of the air inside the birdhouse and furthermore facilitating livestock breeding. The system has soft-start function for protecting electronic components from surge current well.

The invention relates to the technical field of PWM signal generator circuits, in particular to a PWM signal generator circuit which comprises a triangular wave generator circuit, a direct-current voltage generator circuit and a comparison circuit, wherein the direct-current voltage generator circuit is electrically connected with the triangular wave generator circuit and the comparison circuit, and the comparison circuit is electrically connected with an external push-pull circuit. The push-pull circuit is electrically connected with an external BUCK step-down circuit. A PWM signal is generated through arranging the triangular wave signal generator circuit and the direct-current voltage generator circuit and through the comparison circuit for controlling the switch tube, and therefore theduty ratio of the system is slowly increased in the starting process of the system. In the power-down process of the system, the output duty ratio is slowly decreased; in the whole process from system startup and normal work to system power failure, the output duty ratio is not higher than 45%, so that the safety and reliability of the system are fundamentally ensured.

A switching power converting apparatus includes a voltage conversion module, a detecting unit, and a switching signal generating unit. The voltage conversion module converts an input voltage into an output voltage associated with a secondary side current, which flows through a secondary winding of a transformer and is generated based on a switching signal. The detecting unit generates a detecting signal based on the output voltage and a predetermined reference voltage. The switching signal generating unit generates the switching signal based on the detecting signal and an adjusting signal so that the secondary side current is gradually increased during a start period of the switching power converting apparatus.

The invention discloses a soft-starting poultry house automatic exhaust system based on a follower circuit. The soft-starting poultry house automatic exhaust system based on the follower circuit is characterized by mainly comprising an exhaust fan M, a detecting circuit, an amplifier P1, an amplifier P2, a capacitor C3, a capacitor C4 and the like, wherein the negative pole of the capacitor C3 is connected with the positive pole of the amplifier P1 while the positive pole of the capacitor C3 is connected with the detecting circuit; and the negative pole of the capacitor C4 is connected with an output end of the amplifier P1 while the positive pole of the capacitor C4 is connected with the positive pole of the capacitor C3 through a resistor R4. The soft-starting poultry house automatic exhaust system based on the follower circuit can filter interference signals doped in detecting signals, the cleanliness of the detecting signals is improved, and meanwhile, the detecting signals can be processed to improve stability of the detecting signals, so that operation of the exhaust fan can be controlled accurately; and a poultry house can be ventilated effectively, the quality of air in the poultry house is improved, and breeding of poultry is facilitated. The soft-starting poultry house automatic exhaust system based on the follower circuit has a soft-starting function, so that electronic elements can be protected from being damaged by surge current well.