43 results about "Solar generator" patented technology

A landing pad receives and stores packages delivered from an aerial vehicle or awaiting pickup from an aerial vehicle. The landing pad can be placed outside of a window and can contain a transmitter for sending out an identification signal via radio frequency to aid aerial vehicles in finding the landing pad. The landing pad contains a landing platform with a trapdoor that leads to a storage compartment. The trapdoor can be configured to only open when it receives a signal from an authorized aerial vehicle. The storage compartment can be accessed via a storage compartment door which can contain a locking mechanism. The storage compartment can be climate controlled. The landing pad can also have a transmitter that emits sounds to discourage animals from nesting on or near the landing pad. The landing pad can also include a solar power generator as a source of electrical energy.

The application discloses a tomb decoration structure and a decoration process thereof, and relates to the technical field of tomb decoration structures. In order to solve the safety problem of the cinerary urn, the specific structure comprises a base and a watchtower for repairing a stone lion, a tomb is formed in the top of the base, a tombstone is repaired on the outer wall of one side of the back of the base, an installation groove is formed below the watchtower close to the base, and a solar cell panel is arranged on the outer wall of the back of the tombstone; a solar power generator set is arranged in the installation groove, a decoration structure is repaired on the inner surface of the tomb, a rotating and unfolding mechanism is arranged on the inner wall of one side of the tomb, and an isolation sealing frame is welded to the top and the bottom of the rotating and unfolding mechanism, a cinerary urn is placed in the tomb, a base is sleeved to the outer wall of the bottom of the tomb, and a temperature and humidity sensor is arranged on the outer wall of the side of the base. The application effectively solves the problem of water immersion and dampness in the tomb, plays a role in protecting the cinerary urn in the tomb, and realizes self-sufficiency of internal electrical components.

A spacecraft for the distribution of electrical energy to client craft at points situated in free space, in orbit and / or on a celestial body includes a main structure equipped with an electric thruster, with a chemical thruster and with a solar generator, a first fuel container for fuel intended for the electric thruster, and a second fuel container for fuel intended for the chemical thruster. The spacecraft is able to be modulated such that the main structure can be coupled / decoupled alternatively to / from the first container or the second container, the first container and the second container are able to be coupled / decoupled to / from one another, and the solar generator can be deployed or retracted.

The tunnel exit photovoltaic guardrail integrated anti-collision device comprises an anti-collision pier body, an anti-collision mechanism is arranged on the side, facing the center of a road, of the anti-collision pier body, and a wind power generation mechanism and a solar power generation mechanism are sequentially arranged above the anti-collision pier body; the anti-collision mechanism comprises an anti-collision barrel parallel to the length direction of a road, telescopic assemblies are movably connected to the two ends of the anti-collision barrel correspondingly, the other ends of the telescopic assemblies are fixedly connected to the side wall of the anti-collision pier body, a buffering assembly is further installed between the two telescopic assemblies, and the buffering assembly is movably connected with the side wall of the anti-collision barrel. The device integrates anti-collision and new energy power generation functions, and has the beneficial effects of high-efficiency anti-collision, comprehensive utilization of energy, compact structure, high adjustability and the like.

The invention relates to the technical field of door frames, in particular to an energy-saving door and window based on intelligent security, which comprises a door frame and a glass window, triggering mechanisms are arranged at four corners of the glass window, a solar power generation mechanism is arranged on one side of the door frame, and a security mechanism and an alarm mechanism are arranged on the other side of the door frame; the triggering mechanism comprises a guide sliding rail, guide sliding blocks are arranged on the guide sliding rail, and the multiple guide sliding blocks are pasted to the surfaces of the four corners of the glass window through glue. According to the invention, through the trigger mechanism, a guide slide block is matched with an electrode block, a circuit can be rapidly conducted when glass is impacted, the problem of lagging of traditional security response is solved, the security mechanism forms a staggered barrier by using a protection rod and a contact block, external force invasion can be effectively intercepted, and a contact is in contact with the contact block to trigger an alarm mechanism to give an alarm; rapid response from detection to alarm interception is achieved, traditional energy dependence is reduced through power supply of the solar power generation mechanism, and therefore the safety protection level and the energy utilization efficiency of doors and windows are effectively improved.

The utility model relates to the technical field of electromagnetic valves, in particular to an environment-friendly electromagnetic valve which comprises an electromagnetic valve body, water passing ports are formed in the two sides of the electromagnetic valve body respectively, and an electromagnetic valve element used for opening and closing the valve is arranged above the electromagnetic valve body. A square base is arranged at the upper end of the electromagnetic valve body, the lower end of the square base and the outer wall face of the electromagnetic valve body are fixedly assembled through screws, a square rod is slidably inserted into the square base, and a supporting plate is arranged at the upper end of the square rod. Through the solar power generation mechanism, solar energy can be absorbed through the solar cell panel, the solar energy is converted into electric energy through the solar controller, and then the electric energy is sent into the storage battery to be stored, so that energy-saving and environment-friendly use of the electric energy can be achieved, the storage battery supplies power to the electromagnetic valve element, and normal work of the electromagnetic valve element can be achieved; the storage battery part is in butt joint with the threaded cap through the threaded column, disassembly and maintenance can be facilitated, and therefore maintenance work of workers is facilitated.

This invention discloses an event-driven dynamic ranking activation and information fusion method for sensor networks. First, a solar generator and battery are integrated into the sensor nodes, and power generation simulation is performed based on a real irradiance dataset. A Poisson model is used to simulate the random occurrence of targets or events to drive the switching of sleep or wake-up states of surrounding nodes. Second, the state ranking value of each node is calculated based on its importance parameters. Joint parameters for the event-driven region and activation ratio in the activation method are designed, and combined with weights driven by link quality, an improved distributed Kalman information fusion method is used to further maximize the efficiency of utilizing the sensor information of all activated nodes. Finally, simulations verify the effectiveness of the designed method. This invention optimizes network performance while maximizing the efficiency of utilizing the sensor information of all activated nodes, further improving sensing accuracy in the sense of minimum variance.

The utility model discloses an outdoor portable earthquake monitoring system which comprises a control box, a solar power generation mechanism, a seismometer, a protective shell and a leveling structure. According to the outdoor portable earthquake monitoring system, the storage battery can be charged by utilizing the solar power generation mechanism, so that cables do not need to be laid when the monitoring system is installed and used outdoors; the leveling structure is used for providing horizontal installation conditions for the seismometer, so that the seismometer can adapt to different installation conditions, meanwhile, the protective shell does not make contact with the leveling structure and the seismometer during monitoring, resonance interference caused by external noise vibration, rain and other situations is reduced, and the monitoring accuracy of the seismometer is improved; and when position transfer is needed, the protection shell can accommodate the leveling structure, so that the occupied space is reduced, and the portability is improved.

A solar generator speed regulation and control monitoring system comprises a multi-source fusion sensing unit used for collecting multi-dimensional heterogeneous data in the operation process of a solar power generation system in real time; the self-adaptive collaborative decision-making unit is used for receiving the data from the multi-source fusion sensing unit and generating collaborative control instructions oriented to different execution mechanisms based on a preset collaborative optimization model and algorithm; the multi-mode execution driving unit is used for receiving and executing the cooperative control instruction issued by the self-adaptive cooperative decision-making unit and driving a corresponding physical execution mechanism to act; and the global state monitoring and diagnosis unit is used for gathering and analyzing state data from the multi-source fusion sensing unit and each unit in the system in real time, and realizing global visualization, performance evaluation and early fault early warning of the system operation state.

A hybrid system for extracting water from the atmosphere and generating solar energy, comprising a thermoelectric phase change device consisting of an oxygen source designed to provide medical oxygen; a photovoltaic layer configured to convert incoming solar radiation into electrical energy and generate heat energy as a byproduct; a hydrophilic condensation layer located below the photovoltaic layer, wherein the condensation layer has a nanostructured transparent surface coating configured to promote nucleation and condensation of water vapor from the ambient air when cooled below the dew point; a phase change material layer (PCM layer) that is thermally coupled to the photovoltaic layer and the hydrophilic condensation layer, wherein the PCM layer is configured to absorb excess heat during daylight and release stored thermal energy during sunless periods to maintain a controlled surface temperature; a thermoelectric module arranged between the PCM layer and a heat dissipation element, wherein the thermoelectric module is electrically connected to the photovoltaic layer and can be operated in a cooling mode to lower the condensation surface temperature, as well as in a heating mode to prevent frost formation; a water collection and storage device with microchannel drainage paths extending from the condensation layer to a sealed and insulated reservoir designed to collect condensate; and Modular electrical and hydraulic connectors that allow the connection of a variety of such systems to form a scalable arrangement for the integrated generation of electrical energy and the extraction of water from the atmosphere, the combined configuration enables the simultaneous generation of electricity and the collection of condensed water from the atmosphere using solar energy and recovered waste heat within a single modular unit.

The utility model discloses an agricultural internet of things data acquisition control system, including main control cabinet, solar generating mechanism, monitoring mechanism and spraying irrigation mechanism. This agricultural internet of things data acquisition control system utilizes each bottom monitoring branch to monitor the area respectively, monitors carbon dioxide concentration, temperature and soil humidity etc. data in field, helps remote control center real -time monitoring the data in each area, and remote control center judges whether need irrigation according to the plant humidity demand in the area and the data in the corresponding area, when need irrigation, then through main control unit control corresponding irrigation branch watering, thereby according to the plant difference of each area, carries out corresponding irrigation management and data acquisition to each area, realizes the fine management, adapts the field that has different crops to plant, utilizes water storage branch to collect rainwater to reach the purpose of comprehensive utilization rainwater resources and water saving.

The invention is suitable for the technical field of planting equipment, and provides a desert planting robot which comprises a vehicle body, crawler walking mechanisms are symmetrically installed at the two ends of the vehicle body, a vehicle frame is installed at the top end of the vehicle body, and a solar power generation mechanism is installed at the top end of the vehicle frame. A seed supply mechanism is installed on the portion, below the solar power generation mechanism, of the vehicle frame, a water supply mechanism is installed at the top end of the vehicle body, and a planting mechanism is installed at one end of the vehicle body; according to the device, solar power generation, refrigeration sheet water production, automatic sowing, Fresnel lens seed fixing and other technologies are integrated in one automatic sowing trolley for the desert, the comprehensive functions of energy self-supply, water resource regeneration, precise sowing and efficient seed fixing are achieved, powerful support is provided for desertification control and ecological restoration, and meanwhile the desert automatic sowing trolley has the advantages of being simple in structure and convenient to use. Due to the characteristics of automation and high efficiency, the labor investment is reduced, the desertification control cost is reduced, and wide application prospects are achieved.

A solar power generator for forming a uniform focal region is proposed. The proposed relates to a solar power generator for forming a uniform focal region and, more particularly, to a solar power generator for forming a uniform focal region and, the solar power generator being capable of forming the uniform focal region in a specific area with an infinite number of focuses by reflected sunlight, controlling the focal region by adjusting an angle and width according to position changes of the focal region due to optical path distortion, and controlling generated power according to purpose of use.

The utility model relates to the technical field of crop monitoring equipment, in particular to a crop canopy phenotype in-situ monitoring device based on an image sensor, which comprises a mounting bracket provided with a mounting rod; the data acquisition assembly comprises a mounting mechanism, a moving mechanism and an image collector; the power generation assembly comprises a solar power generation mechanism, an energy storage battery and a connecting mechanism; stable power support can be provided for the monitoring device through the arrangement of the solar power generation mechanism, the problem of dependence on an external power supply or frequent battery replacement is avoided, meanwhile, a plurality of independent energy storage batteries are arranged, replacement and maintenance of a single battery are facilitated, and the monitoring device is simple in structure and convenient to use. Through the arrangement of the connecting mechanisms, the energy storage batteries are mounted on the mounting rods, and meanwhile, the adjacent energy storage batteries are connected in parallel, so that convenience and rapidness are achieved; the arrangement of the connecting mechanism facilitates the installation and replacement of the data collector.

TITLE: System comprising a space vehicle and method for determining an electrical phenomenon of a solar generator The present invention relates to a system (1) comprising a space vehicle (3) with at least one solar generator (9), each solar generator comprising a plurality of sections and being suitable for supplying electric current to at least one electrical energy consumer (12, 14, 16, 18) of the space vehicle (3); at least one pair (24) of conductors, the pairs (24) of conductors comprising at least one conductor (24a, 24b) for each polarity; the space vehicle (3) comprising for each section (22) at least one sensor (28, 28a, 28b, 28c, 28d);and at least one device (16, 20) for detecting an electrical phenomenon, the device for detecting an electrical phenomenon being capable of: determining (1000) a common-mode current for each section (22) and / or the derivative of the common-mode current for each section (22), and determining the presence of an electrical phenomenon and the section(s) (22) of the solar generator (9) affected by the electrical phenomenon. Figure for abstract 2;

The invention discloses a multifunctional solar generator, which relates to the technical field of generators and comprises a solar panel, a rotating plate is arranged at the bottom end of the solar panel, a release mechanism is arranged at the bottom end of the rotating plate, a first rack is arranged at the bottom end of the release mechanism, and a second rack is slidably connected to one end of the first rack. A support is arranged at the bottom end of the second rack, and the first rack and the second rack are in sliding connection through a limiting block. By controlling a motor to rotate forwards or backwards, a rectangular limiting block prevents a rack from being dislocated, sunlight tracking is achieved, when strong wind is encountered, a wind bearing plate is perpendicular to the ground, the wind bearing area is increased, when wind power is too large, the wind bearing plate is pushed to rotate, a solar panel freely swings with a rotating plate as the axis, strong wind is resisted, gear abrasion and bearing loss are reduced through the structure, and the service life of the solar panel is prolonged. The maintenance cost is reduced, intelligent protection design is achieved, and the device is not prone to damage in severe weather and is high in reliability and good in durability.

The utility model discloses pure water production equipment for cleaning conductive powder, which comprises a water injection port for injecting raw water, a water supply mechanism for storing the raw water and distributing the raw water is arranged below the water injection port, and the water supply mechanism is connected with a distillation mechanism for purifying water quality. One side of the distillation mechanism is provided with a condensation mechanism for condensing water vapor after condensation and distillation; a water collecting tank for collecting distilled water for storage is arranged on one side of the condensing mechanism. According to the utility model, the water supply mechanism is arranged to automatically inject water into the distillation mechanism, and the distillation mechanism is arranged to carry out preliminary purification at the front section of the existing water purification equipment, so that the burden of water purification of the subsequent water purification equipment is reduced, and the service life of high-value equipment such as a reverse osmosis membrane and an ion exchanger in the equipment is prolonged. And by arranging a renewable solar power generation mechanism, new energy is effectively used for production, emission and pollution are reduced, and energy utilization is maximized.

The invention relates to a bridging and connecting circuit (1) with a first terminal (11) for connecting to a positive pole of a solar generator and a second terminal (22) for connecting to a negative pole of the solar generator, with a series circuit arranged between the first terminal (11) and the second terminal (22) comprising a first diode (2), a capacitor (3) and a first semiconductor switch (S1), wherein the first diode (2) and the first semiconductor switch (S1) have a common orientation in a forward direction towards the second terminal (22) and a second semiconductor switch (S2) which is arranged in parallel to the part of the series circuit consisting of the first diode (2) and capacitor (3), wherein the second semiconductor switch (S2) has an orientation opposite to that of the first diode (2).The circuit includes a control circuit (4) which is designed and configured to switch at least the second semiconductor switch (S2) on when a voltage applied to the capacitor (3) exceeds a first threshold value, and to switch it off when the voltage falls below a second threshold value which is lower than the first threshold value.

The invention relates to an intelligent speed regulation and control method and system for a solar generator, and relates to the field of solar power generation technologies. When the external illumination intensity is greater than the preset effective power generation intensity, determining an effective power generation position according to a preset sun motion algorithm, and controlling the generator to rotate to the effective power generation position; after the generator rotates, determining required reference voltage and theoretical generated power according to a preset maximum power point tracking algorithm; determining an equipment operation rotating speed corresponding to the required reference voltage according to a preset rotating speed matching relation, controlling a generator to operate at the equipment operation rotating speed, and obtaining actual power generation power in the operation process; and calculating according to the theoretical generated power and the actual generated power to determine a power error ratio, and outputting an alarm signal when the power error ratio is greater than a preset allowable error ratio. The solar generator has the function of improving the overall use effect of the solar generator.

The invention relates to the field of photovoltaic power generation, and discloses a solar generator energy-saving device which comprises an auxiliary energy storage component, the auxiliary energy storage component comprises an installation frame, the installation frame is provided with a distribution assembly, an energy storage assembly and a fan shaft, the input end of the fan shaft extends to the outside and is provided with blades, and the output end of the fan shaft is connected with the input end of the distribution assembly. A plurality of output ends of the distribution assembly are arranged, each output end is connected with one energy storage assembly, a generator is arranged between the output ends of the multiple energy storage assemblies, each energy storage assembly comprises a base, a top seat and a connecting rod used for connecting the base and the top seat, and a main lead screw and a guide rod are installed between the base and the top seat; the main lead screw is in power connection with the output end of the distribution assembly through a speed reducer, a lifting piece is arranged outside the main lead screw and is in sliding connection with the guide rod, an energy storage spring is arranged between the lifting piece and the top seat, and an auxiliary lead screw is installed between the base and the top seat and is in threaded connection with the lifting piece.

The utility model relates to the field of solar lamps, in particular to a solar lamp with magnetic attraction charging, which comprises a mounting frame and a lamp, a second magnetic attraction structure is arranged on the mounting frame, an illumination structure is arranged in the lamp, a first magnetic attraction structure is arranged in the lamp, and the illumination structure is inserted into the second magnetic attraction structure through the first magnetic attraction structure to complete power supply. Compared with the prior art, the lamp has the advantages that the first magnetic attraction structure and the second magnetic attraction structure are arranged, the first magnetic ring and the second magnetic ring are adopted to complete matched connection of the first magnetic attraction structure and the second magnetic attraction structure, and then electric connection between the lamp and the solar generator and flexible connection between the lamp and the mounting frame are achieved; the angle of the lamp can be easily adjusted by a user, the illumination requirements of different scenes are met, and the first conductive rod core and the second conductive rod core are limited by arranging the first trapezoidal hole and the second trapezoidal hole.

The application discloses a carbon-neutral energy system containing plume geothermal carbon sequestration equipment and an optimal configuration method thereof, and the system comprises a wind-solar generator set, a gas turbine, a plume geothermal carbon sequestration equipment, an auxiliary boiler, a heat exchange equipment, an absorption refrigerating machine and an electric refrigerating machine. The optimal configuration method firstly models the carbon-neutral energy system; then establishes a carbon sequestration equipment and thermal power plant income distribution model by using Nash cooperation game optimization under a carbon trading system; and finally, the installed capacity of each equipment of the carbon-neutral energy system is solved by using a carnivorous plant algorithm (CPA) optimization. The method provided by the application can effectively improve energy utilization rate, reduce system operation cost, realize carbon dioxide sequestration and utilization, and achieve the system carbon-neutral target.

In an operating method for an energy generation plant (1), the input side of which is connected to a solar generator (2) via a clockable electromechanical switch (3) of the energy generation plant (1), the output side of the energy generation plant (1) being connected to a grid (9) via a grid isolating switch (4), wherein an inverter (7) of the energy generation plant (1) converts the current of the solar generator (2) supplied via a DC bus (13) for feeding into the grid (9), and wherein a supercap storage device (5) is connected to the DC bus (13) via a fuse (10), having a trip current lower than the short-circuit current of the solar generator (2), and an isolating switch (6) , the isolating switch (6) is first of all closed when the grid isolating switch (4) is open and the clockable switch (3) is open, then the clockable switch (3) is clocked with a clock pattern, which excludes tripping of the fuse (10), until a voltage of the DC bus (13) and a voltage of the supercap storage device (5) have been balanced, and then it is closed. The grid isolating switch (6) can then be closed and a current of the solar generator (2) converted by the inverter (7) can be fed into the grid (9). A corresponding energy generation plant (1) is also described.

A smart home generator is a device that provides clean, free energy in a controlled and programmed manner. It supplies electricity wherever needed, such as homes, campsites, and rural areas without access to the electrical grid. It also serves as a backup power source in emergency or disaster zones where electricity is essential when the grid is unavailable. This device incorporates smart home electronics and actuators to optimize energy resource management. Its solar panel makes it independent and autonomous, unlike gasoline or diesel generators, which require a constant fuel supply, incurring additional costs and contributing to environmental pollution.

The application relates to a portable and chargeable unmanned aerial vehicle taking-off and landing platform, and relates to the technical field of unmanned aerial vehicle taking-off and landing. The platform comprises a plurality of apron supporting legs and an aluminum alloy frame. A solar power generation mechanism is arranged in the aluminum alloy frame. A solar cell is fixedly connected to the top of the taking-off and landing platform. A plurality of LED landing indicator lamps are fixedly connected to the top of the taking-off and landing platform. An approach and departure control structure is fixedly connected to the bottom of the taking-off and landing platform. A Beidou positioning structure is fixedly connected to the bottom of the taking-off and landing platform. The application has the effects that the solar cell is connected to the lithium battery through the busbar, energy control is realized by cooperating with a system switch and the like, outdoor emergency applicability is improved, solar power is continuously generated and stored, the output integrated interface and the LED indicator lamp are used for real-time monitoring of unmanned aerial vehicle energy consumption and efficient energy compensation, and the portable emergency flight energy of the unmanned aerial vehicle is provided.

This disclosure relates to a system comprising a spacecraft with at least one solar generator, each solar generator including a plurality of sections and being capable of supplying the electric current to at least one electrical energy consumer of the spacecraft, at least one pair of conductors, the pairs of conductors including at least one conductor for each polarity, The spacecraft includes, for each section, at least one sensor, and at least one device for detecting an electrical phenomenon. The device for detecting an electrical phenomenon being capable of determining a common mode current for each section and / or the derivative of the common mode current for each section, and determining the presence of an electrical phenomenon and the section(s) of the solar generator affected by the electrical phenomenon.

A mine side slope online monitoring system relates to the technical field of side slope monitoring devices and comprises a stand column, a motor, a coordinate positioning mechanism, a side slope radar, a solar power generation mechanism and a controller, the bottom end of the stand column is pre-buried in a soil body on the opposite side of a side slope, and the motor is embedded in the top end of the stand column; an output shaft of the motor extends upwards and is fixedly connected with a coordinate positioning mechanism, a slope radar is installed on the coordinate positioning mechanism, the slope radar is in signal connection with a controller through a wire and used for collecting slope deformation information, and the controller is electrically connected with the motor and the coordinate positioning mechanism through wires. The solar power generation mechanism is configured to supply power to the controller, the slope radar, the motor and the coordinate positioning mechanism. The utility model provides automatic equipment for mine slope monitoring, which can obviously improve the efficiency and the accuracy of slope deformation detection, save labor and avoid a large amount of physical labor and safety risks caused by manual inspection.

The present invention discloses a self-adjusting floating breakwater with a hybrid wind-solar power generation system and its operating process, the self-adjusting floating breakwater with a plurality of sets of wind power generation means installed therein, each set of wind power generation means including a pair of wind power generation devices, the pair of wind power generation devices being connected to a solar power generation device via a wind-solar hybrid power generation device, the wind power generation device being a liftable wind power generation device that deploys and retracts the solar power generation device when raised or lowered. The breakwater of the present invention can automatically adjust the hybrid or standalone operation of the wind and solar power generation system according to sea and weather conditions, maximizing energy utilization efficiency and ensuring equipment safety. In response to extreme sea conditions, the floating breakwater can autonomously retract inward for emergency evacuation, effectively protecting the power generation devices and reducing maintenance costs and operating risks, promoting the wider application and development of renewable energy in the marine field.

The invention relates to a bridging and connecting circuit (1) with a first terminal (11) for connecting to a positive pole of a solar generator and a second terminal (22) for connecting to a negative pole of the solar generator, with a series circuit arranged between the first terminal (11) and the second terminal (22) comprising a first diode (2), a capacitor (3) and a first semiconductor switch (S1), wherein the first diode (2) and the first semiconductor switch (S1) have a common orientation in a forward direction towards the second terminal (22) and a second semiconductor switch (S2) which is arranged in parallel to the part of the series circuit consisting of the first diode (2) and capacitor (3), wherein the second semiconductor switch (S2) has an orientation opposite to that of the first diode (2).The circuit includes a control circuit (4) which is designed and configured to switch at least the second semiconductor switch (S2) on when a voltage applied to the capacitor (3) exceeds a first threshold value, and to switch it off when the voltage falls below a second threshold value which is lower than the first threshold value.

The invention relates to a bypass and connection circuit (1) comprising a first terminal (11) for connection to a positive pole of a solar generator and a second terminal (22) for connection to a negative pole of the solar generator, the circuit comprising a series circuit which is arranged between the first terminal (11) and the second terminal (22) and has a first diode (2), a capacitor (3), and a first semiconductor switch (S1), the first diode (2) and the first semiconductor switch (S1) having a common orientation in a forward-conduction direction towards the second terminal (22), and a second semiconductor switch (S2) which is arranged in parallel with the part of the series circuit formed by the first diode (2) and the capacitor (3), wherein the second semiconductor switch (S2) has an orientation opposite to the orientation of the first diode (2). The circuit comprises a drive circuit (4) which is provided and designed to switch at least the second semiconductor switch (S2) into a conducting state when a voltage applied across the capacitor (3) exceeds a first threshold value, and to switch it into a blocking state when the voltage falls below a second threshold value which is lower than the first threshold value.