273 results about "Low voltage circuits" patented technology

The utility model is suitable for the technical field of batteries, and provides a high-voltage power distribution device, a battery and a power utilization device. The high-voltage power distribution device comprises a shell, a cover body and a low-voltage terminal; the shell has an opening; the cover body covers the opening, and an installation cavity is defined by the cover body and the shell; the low-voltage terminal is integrated on the target piece, the target piece is a shell or a cover body, the first end of the low-voltage terminal is exposed out of the mounting cavity, and the second end of the low-voltage terminal is electrically connected with a low-voltage circuit in the shell; at least one side wall of the target piece is provided with a protective shell with an outward opening, and the first end of the low-voltage terminal is located in the protective shell. According to the high-voltage power distribution device, the battery and the power utilization device, the number of parts in the high-voltage power distribution device can be reduced to a certain extent, and the occupied area of the high-voltage power distribution device is reduced.

The invention discloses a low-voltage circuit cable convenient and quick to connect, which relates to the technical field of low-voltage cables, and comprises a first low-voltage circuit cable body which is arranged at the left side end of an outer protection connecting end, forms circuit connection with a second low-voltage circuit cable body through the outer protection connecting end, and is used for forming a complete closed electrical circuit, under the cooperation of the magnetic connection end and the magnetic fixing end, the whole cable butt joint operation is realized, the connection process is greatly simplified, the skill requirement on operators is reduced, the mechanical stability in the connection process is ensured, the cable is prevented from being accidentally broken, the stability of internal electrical connection is also ensured, and the service life of the cable is prolonged. According to the low-voltage circuit cable connection system, the power or signal transmission is ensured not to be interfered, the viability of the whole low-voltage circuit cable connection system in a severe environment is improved, the electrical performance of cable connection is improved under the cooperation of the distance adjusting control assembly, and the potential safety hazards of heating, electric energy loss and the like caused by the increase of contact resistance are reduced.

A circuit breaker protects an electric low-voltage circuit and contains a mechanical separating contact unit, which has an open state of its contacts in order to prevent a current flow in the low-voltage circuit or a closed state of the contacts for a current flow in the low-voltage circuit, and an electronic interruption unit, which is connected in series to the mechanical separating contact unit on the circuit side and which, as a result of semiconductor-based switch elements, has a high-ohmic state of the switch elements in order to prevent a current flow or a low-ohmic state of the switch elements for a current flow in the low-voltage circuit. The level of the current of the low-voltage circuit is ascertained, and if at least one current threshold or a current / time threshold is exceeded, a process for preventing a current flow in the low-voltage circuit is initiated.

The invention discloses a high-voltage discharge protection device, low-voltage equipment and a detection robot, the protection device is used in the low-voltage equipment in a high-voltage environment, and the protection device comprises an arc striking body and at least one inductor; the arc striking body is located between a high-voltage body in a high-voltage environment and a metal shell of low-voltage equipment, and the inductor is electrically connected with the arc striking body and the inductor, so that the arc striking body, the inductor and the metal shell form a discharge object of the high-voltage body. The arc striking body can guide the discharge of the high-voltage body so as to generate high-frequency electromagnetic radiation on the arc striking body, and then the high-frequency electromagnetic radiation is filtered by using the inductive electricity, so that the high-frequency electromagnetic radiation can only act on the metal shell of the low-voltage equipment after being filtered, and finally, the voltage acting on the metal shell is slowly changed; therefore, transient voltage change cannot be generated on the metal shell, secondary electromagnetic radiation is avoided, a circuit in the low-voltage equipment is effectively protected, and normal operation of a low-voltage circuit in the metal shell is ensured.

The invention relates to the technical field of welding, and provides a low-load voltage circuit and a lithium battery welding machine. The circuit comprises a main control module, a voltage detection unit, a switching circuit, a pulse modulation unit and a current sampling feedback unit. The voltage detection unit monitors the end voltage of a welding gun of a welding machine in real time, the switching circuit limits the output voltage to be smaller than a safety threshold value of 36 V in a no-load mode, and a built-in bidirectional thyristor achieves isolation of a high-voltage loop and a low-voltage loop. The pulse modulation unit adjusts the on-off frequency of a main power loop, and the current sampling feedback unit dynamically adjusts the pulse duty ratio so as to accurately control the welding current. The lithium battery welding machine integrates the circuit and is provided with a welding gun assembly, a main transformer and a power supply module, the electric shock risk is effectively reduced, and the welding quality and efficiency are improved.

The invention discloses a low leakage current enabling control circuit and method suitable for a high-voltage LDO, the low leakage current enabling control circuit comprises a bias unit, a turn-off unit and an output unit, and the output end of the bias unit is connected with the input end of the turn-off unit to provide static bias current for the turn-off unit; the output end of the turn-off unit is connected with the input end of the output unit to provide a controllable high-voltage domain power supply for the output unit, and the first output end of the output unit is connected with the first input end of the low-voltage circuit module to provide a low-voltage domain power supply for the low-voltage circuit module. And the second output end of the output unit is connected with the second input end of the low-voltage circuit module and is used for controlling the enabling and turn-off of the low-voltage circuit module. According to the invention, the isolation degree of the chip in the disable state is improved, and the leakage current of the chip in the disable state is effectively reduced.

The present invention provides a low-voltage circuit breaker, which belongs to the technical field of circuit breakers. The invention includes a circuit breaker body, wiring terminals and guide rails, and also includes: a limit clamping assembly, a blocking assembly, and a clamping assembly; by pulling a pull rod and pressing a dial rod, the wiring terminals and the movable clamp can be quickly unlocked to achieve rapid replacement of the circuit breaker, and during the wiring process, the internal circuit of the circuit breaker is in a disconnected state; the protective frame formed by the sliding block and the fixed baffle, and the expansion and contraction of the airbag, together fix and seal the wiring terminals, reduce the influence of external factors such as water vapor and dust on the wiring port, and prevent staff from accidentally touching it, further enhancing the safety of operation; the clamping assembly can better match wiring terminals of different specifications through the expansion and contraction of the airbag and the compression and release of the spring, ensure the stability of the wiring terminals, and effectively reduce the risk of poor electrical connection or damage caused by shaking of the wiring terminals.

The invention provides a band-gap reference circuit for a low-voltage circuit, which comprises a clamping operational amplifier circuit for receiving an input voltage and outputting an amplified input voltage under the control of a bias voltage; the feedback adjustment circuit performs feedback adjustment on the amplified input voltage to obtain a feedback voltage; the current mirror circuit generates reference voltage and reference current according to the feedback voltage; the transistor circuit generates a positive / negative temperature coefficient current by using a reference voltage and generates an input voltage. The reference voltage output circuit generates and outputs a bandgap reference voltage using the reference current. The threshold voltage of a transistor in the circuit is reduced by using a substrate bias technology, the input node of the clamping operation amplification circuit is optimized, the minimum power supply voltage for working of the circuit is reduced, the loop is improved by using the feedback adjustment circuit, the power supply suppression capability is improved, and the stability of the output band-gap reference voltage is improved; the problems of how to improve the minimum power supply voltage of the band-gap reference circuit and how to optimize the power supply suppression effect are solved.

A circuit breaker protects an electric low-voltage circuit, and has: a) the function of ascertaining a level of a differential current of the low-voltage circuit, b) a mechanical separating contact unit so that an opening function of contacts is switched to prevent a current flow or a closing function of the contacts is switched for a current flow in the low-voltage circuit, and c) an electronic interruption unit which is connected to the mechanical separating contact unit in series and which, as a result of semiconductor-based switch elements, is switched to a high-ohmic state of the switch elements to prevent a current flow or a low-ohmic state of the switch elements for a current flow in the low-voltage circuit. The ascertained level of the differential current is compared with a differential current threshold and if the current threshold is exceeded, the current flow in the low-voltage circuit is prevented.

A method of operating an EV in one of various states provides an inverter control system having a high voltage circuit powered by a high DC voltage power source; a low voltage circuit powered by a low DC voltage power source that is substantially less than the voltage of the high voltage power source, the low voltage circuit being configured to power a microcontroller; and an inverter circuit having a plurality of high side switches and a plurality of low side switches, the inverter circuit being configured to deliver AC power to a traction motor. Upon powerup of the high voltage circuit and with the low voltage circuit being unpowered, the method establishes an emergency tow state with each of the high side switches and each of the low side switches being open permitting the EV to be towed without damaging the motor.

A circuit breaker protects an electrical low-voltage circuit. The circuit breaker has a housing with first and second connections on the mains side and first and second connections on the load side, and an isolating contact unit connected to an electronic interrupting unit. The isolating contact unit can be switched by opening contacts to prevent current flow or by closing contacts for current flow in the low-voltage circuit. The electronic interrupting unit is switched by semiconductor-based switching elements into a high-impedance state for preventing the current flow or into a low-impedance state of the switching elements for the current flow in the low-voltage circuit. A current sensor determines the level of the current of the low-voltage circuit. A controller is connected to the current sensor, the isolating contact unit and the electronic interrupt unit, such that a first measuring impedance is provided between the first and the second load-side connection.

A circuit breaker device for a low-voltage circuit has a mechanical isolating contact unit connected in series with an electronic disconnection unit. The mechanical isolating contact unit is switched by opening contacts to prevent current flow or closing the contacts for current flow in the low-voltage circuit. The electronic disconnection circuit is switched by semiconductor-based switching elements into a high-resistance state of the switching elements or into a low-resistance state of the switching elements for current flow in the low-voltage circuit. When the amount of an instantaneous current value of the low-voltage circuit exceeds at least one current threshold value, prevention of the current flow of the low-voltage circuit is initiated. The at least one current threshold value is adjusted according to the magnitude of the voltage of the circuit breaker device.

An integrated series-connected lamp string comprises light sources and control boxes, and each light source is provided with a control box; the control box comprises a power inlet connector, a power transmission connector and an accommodating space, wherein a circuit board is arranged in the accommodating space, and the circuit board is provided with a transformer module and a control module; the power inlet connector is provided with a first high-voltage connection end, the power transmission connector is provided with a low-voltage connection end and a second high-voltage connection end, and the commercial power forms a high-voltage circuit and a low-voltage circuit through the transformer module; the high-voltage circuit is connected to the first high-voltage connection end of the next stage through the second high-voltage connection end, and the low-voltage circuit is connected to the light source through the low-voltage connection end.

The present application provides a high-voltage to low-voltage circuit, a BMS circuit and a microprocessor chip. The high-voltage to low-voltage circuit comprises: a current mirror unit, comprising a first transistor and a second transistor, wherein a source electrode of the first transistor and a source electrode of the second transistor are respectively connected to a first power supply end, and a gate electrode of the first transistor is electrically connected to a gate electrode of the second transistor; a third transistor, wherein a drain electrode of the third transistor is electrically connected to a drain electrode of the first transistor, a gate electrode of the third transistor is grounded, and a source electrode of the third transistor is grounded by means of a first resistor; a voltage-regulator tube, wherein a negative electrode of the voltage-regulator tube is electrically connected to a drain electrode of the second transistor by means of a second resistor; and a diode, wherein a positive electrode of the diode is electrically connected to a positive electrode of the voltage-regulator tube, and a negative electrode of the diode is grounded. By using the third transistor to obtain relatively stable current, and compensating the current by the diode to obtain relatively stable voltage, a low-power-consumption and high-reliability conversion from high voltage to low voltage can be implemented for use by the chip.

The invention provides an integrated synchronous rectification controller, a flyback converter and electronic equipment, the integrated synchronous rectification controller comprises a first switch tube and a synchronous rectification controller, the synchronous rectification controller comprises a sampling circuit, a transistor, a power supply circuit, a detection circuit and a logic control circuit; the first switch tube, the sampling circuit and the transistor are arranged on the first bare chip; the power supply circuit, the detection circuit and the logic control circuit are arranged on the second bare chip; the first bare chip is manufactured by adopting a high-voltage process, and the second bare chip is manufactured by adopting a low-voltage process; the synchronous rectification controller is used for controlling on or off of the first switch tube. The high-voltage circuit part in the synchronous rectification controller is arranged on the first bare chip, and the low-voltage circuit part is arranged on the second bare chip, so that the high-voltage circuit part and the low-voltage circuit part are separated, and the second bare chip only needs to be manufactured by a low-voltage process. The manufacturing cost of the synchronous rectification controller can be reduced, and then the dependency degree on the technological process is reduced.

The invention discloses a method for predicting the service life of an arc extinguishing device of a low-voltage circuit breaker. An arc extinguishing chamber is divided into a left arc starting area, a middle motion area and a right arc extinguishing area along an arc motion path; configuring a special multi-mode sensor group for each section, and respectively acquiring physical signals related to the core degradation mechanism of each section; extracting characteristic parameters including an arcing phase angle, an arc movement speed and an air pressure rising rate from the signal, and calculating an efficiency coefficient of each section; based on the efficiency coefficient and the accumulated stress, establishing an independent exponential attenuation model for each section to calculate the accumulated degradation amount; and finally, the maximum accumulated degradation amount in the three sections is taken as a system health state index, and accurate prediction of the residual life is realized. According to the method, the problems that a prediction object is fuzzy and a fault cannot be positioned in a traditional method are solved, the crossing from overall early warning to accurate section diagnosis is realized, and an effective means is provided for predictive maintenance of the low-voltage circuit breaker.

A circuit breaker protecting an electric low-voltage circuit includes a housing with grid-side and load-side connections and a series circuit of a mechanical isolating contact unit on the grid side and an electronic interruption unit on the load side. The mechanical isolating contact unit has a handle opening and closing contacts. A current sensor unit is disposed in a conductor between the isolating contact unit and the interruption unit, for ascertaining a current level of the low-voltage circuit. A control unit is connected to the current sensor unit, electronic interruption unit, and mechanical isolating contact unit. When current and / or current / time thresholds are exceeded, prevention of a current flow in the low-voltage circuit is initiated. A power supply unit supplying energy to the circuit breaker is connected to conductors of the low-voltage circuit between the isolating contact unit and the interruption unit.

The application discloses an arc fault detection device for a low-voltage circuit breaker and relates to the technical field of low-voltage circuit breaker fault detection.The device comprises a workbench, wherein an elevated platform is installed on a reference plate of the workbench;an infrared temperature measurement probe is installed on a first supporting rod of a first support;an industrial frequency magnetic field measuring device is installed on a second supporting rod of a second support;first and second inclined surfaces are symmetrically arranged on the left and right sides of a third support;third and fourth supporting rods are respectively installed on the first and second inclined surfaces;first and second noise detection probes are respectively installed on the inner ends of the third and fourth supporting rods;and a fifth supporting rod is arranged between the third and fourth supporting rods, and a third noise detection probe is installed on the bottom end of the fifth supporting rod.The device eliminates the blind area of traditional single-point detection, can capture complete high-frequency noise spectrum radiated by various types of fault arcs in the circuit breaker without dead angles, ensures complete extraction of characteristic signals, and avoids misjudgment caused by signal attenuation or directionality omission.

The invention discloses a power module and a solid-state transformer, belongs to the field of solid-state transformers, and considers that the power module can be divided into a medium-voltage circuit and a low-voltage circuit, and electric energy required by the low-voltage circuit and the medium-voltage circuit can be uniformly obtained based on low voltage provided externally. Therefore, the low-voltage auxiliary source can supply power to the low-voltage circuit based on the electric energy provided by the system auxiliary power supply, and the medium-voltage auxiliary source obtains the electric energy from the low-voltage auxiliary source in an electrical isolation mode and supplies power to the auxiliary circuit in the medium-voltage circuit, so that the system auxiliary power supply can supply the electric energy to the low-voltage auxiliary source through the low-voltage cable. The level requirement of protection design is reduced, and the cost is reduced; and the medium-voltage auxiliary source and the low-voltage auxiliary source are electrically isolated, so that the system control module can directly send a system control instruction to the low-voltage circuit through a low-cost cable, and the cost is further reduced.

The invention discloses a range-extended rear wheel side motor motorcycle which is mainly composed of a range extender, a generator, a vehicle control unit (VCU), a wheel side motor and a battery. According to the vehicle, the range extender, the battery, the motor and the low-voltage circuit are managed in a unified mode through the single VCU, and the intelligent starting and stopping function of the range extender can be automatically started and stopped according to the preset SOC value. Meanwhile, the multi-mode switching function of independent switching of three modes of pure electricity, hybrid power and charging can be achieved. In addition, the electric quantity of the storage battery can be monitored, emergency charging of the battery to the storage battery is supported, and low-voltage power supply management of long-term parking and power shortage is avoided.

The present invention provides a dual voltage threshold circuit and a power-off protection circuit thereof, wherein the power-off protection circuit comprises: a high threshold reset circuit, wherein when the voltage of a low voltage source is greater than a high threshold voltage, the output end of the high threshold reset circuit outputs a first level; when the voltage of the low voltage source is less than the high threshold voltage, the output end of the high threshold reset circuit outputs a second level or turns off the output; a switch circuit, which controls the connection or disconnection between the high voltage source and the power supply end of the high voltage circuit based on the output of the high threshold reset circuit; a low threshold reset circuit, wherein the input end is connected to the low voltage source, and the output end is connected to the power supply end of the low voltage circuit, and when the voltage of the low voltage source is greater than or less than the low threshold voltage, the low threshold reset circuit connects or disconnects the low voltage source to the power supply end of the low voltage circuit. Compared with the prior art, the present invention can protect the high voltage circuit when the low voltage circuit loses power.

The invention relates to the technical field of circuit breakers, and discloses a high-low voltage circuit breaker propelling mechanism which comprises a switching-off mechanism, a frame assembly is fixedly installed on the inner wall of the switching-off mechanism, a communication assembly is installed on the inner wall of the switching-off mechanism, and an operator pulls a spring reset rod to drive a radian stop block to move. Then a connecting rod is pushed to ascend to drive a balancing weight, a sliding rod, a spring ring and a connecting block to synchronously ascend, the connecting block ascends to push a moving contact on a moving contact supporting piece to be in contact with a static contact to enable current to be connected, when the current is large, a spring ejector rod downwards pushes an L-shaped plate to descend to enable a radian stop block to be separated from a fixing ring again, and at the moment, the connecting rod is pushed to ascend to drive the balancing weight, the sliding rod, the spring ring and the connecting block to synchronously ascend. The spring ring and the balancing weight return, and a larger initial driving force is provided by utilizing the elastic potential energy of the spring of the spring ring and the gravitational acceleration of the balancing weight, so that the moving contact supporting piece and the static contact can be quickly separated for a larger distance, the duration time of an electric arc is shortened, and the continuous combustion of the electric arc is effectively prevented.

The utility model belongs to the field of interactive circuits, particularly relates to a WIFI POT circuit, and aims to solve the problems that the existing system communication mode based on the WIFI POT circuit is complicated, and a high-voltage end circuit is easy to interfere with the communication stability. In order to solve the problems that a system based on a WIFIPOT circuit is large in standby power consumption and not beneficial to popularization and use, the utility model provides the following scheme that the system comprises an MCU control circuit, the MCU control circuit comprises an interactive interface communication module, a power reading circuit and a power control circuit, the power reading circuit comprises an IM1281B alternating current power acquisition module and an RS485 bus, and the power control circuit comprises an RS485 bus. The IM1281B alternating current power acquisition module and the RS485 bus are in communication transmission connection through TTL, the communication mode is simple and efficient, a low-voltage circuit and a high-voltage circuit prevent interference from a high-voltage end through optoelectronic isolation, in addition, a high-power magnetic latching relay serves as an action element, electric energy is consumed only at the moment of action, and the power consumption is low. And the standby power consumption and heating of the system are greatly reduced.

The motor controller comprises an outer box, and a control panel, a power module connected with the control panel, a capacitor connected with the power module, a filter connected with the capacitor, a resistor connected with the capacitor, an alternating current busbar connected with the power module and a power panel for supplying power to a low-voltage circuit in the motor controller are arranged in the outer box. The filter, the capacitor and the power module are sequentially installed on a bottom plate of the outer box, a heat dissipation water path is formed in the bottom plate of the outer box, water nozzles which are in butt joint with the water inlet end and the water outlet end of the heat dissipation water path respectively are installed, and the control panel and the power panel are sequentially arranged above the power module from bottom to top. A control shielding plate and a power shielding plate arranged above the control shielding plate are fixedly connected in the outer box, the control panel is arranged on the control shielding plate, and the power panel is arranged on the power shielding plate. According to the utility model, the heat of the motor controller can be rapidly taken away, the environmental adaptability of the motor controller is improved, and the influence of coupling electromagnetic interference on the normal operation of the motor controller is effectively reduced.

A circuit breaker for protecting an electric low-voltage circuit includes a housing with grid and load-side terminals, and a mechanical break contact unit series-connected to an electronic interruption unit. The break contact unit pairs with the load-side terminal, and the interruption unit pairs with the grid-side terminal. The current level in the low-voltage circuit, between the grid and load-side phase conductor terminals, is ascertained. Preventing current flow in the low-voltage circuit is initiated upon exceeding current and / or current / time thresholds. A measurement impedance between wires of the low-voltage circuit is connected to the connection between the break contact unit and the interruption unit. While contacts of the break contact unit are open and the interruption unit switches to high-ohmic state, the interruption unit switches to low-ohmic state for a period to check functionality of the circuit breaker.

To provide a living body stimulation device that instantaneously changes a magnitude of a stimulation signal.SOLUTION: Provided is a living body stimulation device that outputs a stimulation signal to a living body via a pair of electrodes. The living body stimulation device includes: a first terminal connected to one of the pair of electrodes; a second terminal connected to the other of the pair of electrodes; a first power circuit that generates a first power supply voltage; a second power circuit that generates a second power supply voltage lower than the first power supply voltage; a first high pressure circuit that is applied with the first power supply voltage and outputs a first high voltage corresponding to the first power supply voltage as the stimulation signal; a first low pressure circuit that is applied with the second power supply voltage and outputs a first low voltage corresponding to the second power supply voltage as the stimulation signal; a first switch provided between the second terminal and the ground; and a control circuit that controls on and off of the first switch and controls the first high pressure circuit and the first low pressure circuit such that the first high voltage or the first low voltage is output to the first terminal as the stimulation signal.SELECTED DRAWING: Figure 1

The utility model provides a battery cluster and an energy storage system. The battery cluster comprises a plurality of battery monomers, a battery bracket and a junction box, a plurality of accommodating spaces arranged side by side are formed in the battery bracket, the plurality of accommodating spaces comprise at least one functional cavity and a plurality of battery cavities, and the functional cavity is positioned at the end part of the battery bracket; the junction box comprises a box body, a high-voltage circuit assembly and a low-voltage circuit assembly, a high-voltage area and a low-voltage area are formed in the box body, the high-voltage circuit assembly is arranged in the box body, located in the high-voltage area and used for being electrically connected with the battery monomers and the converter, and the low-voltage circuit assembly is arranged in the box body, located in the low-voltage area and used for being electrically connected with the converter. The connector is used for electrically connecting a high-voltage circuit assembly and a battery management system. Wherein the plurality of single batteries are respectively and correspondingly arranged in the plurality of battery cavities, and the junction box is arranged in the functional cavity.

The invention belongs to the technical field of integrated circuits, and particularly relates to an ESD electrostatic protection structure suitable for a low-voltage circuit. The ESD electrostatic protection structure adopts a mode that an NPN triode with a floating layered base region structure is used for assisting in triggering an SCR to discharge forward ESD current and a PN junction diode to discharge negative ESD current; the NPN triode with the floating layered base region structure comprises an N + active region I, a P-type ESD injection region, a P well I and an N + active region II, the first N + active region and the second N + active region are a collector region and an emitter region of the NPN triode respectively, the base region is composed of a P-type ESD injection region and a first P well, the P-type ESD injection region is located below the first N + active region, and the base region is of a floating layered structure. The ESD protection structure is provided with a bidirectional rapid ESD current discharge path to the ground, so that the SCR trigger voltage is reduced.

The present invention belongs to the technical field of electrical equipment, and discloses a complete set of grounding wires for low-voltage circuit breakers. The complete set of grounding wires for low-voltage circuit breakers includes a connector, a grounding wire, a nut and an operating assembly. The connector includes a clamping portion and a locking portion that are connected to each other. The clamping portion can be fixedly connected to the wiring terminal of the low-voltage circuit breaker; the wire ear of the grounding wire is sleeved on the locking portion; the nut is sleeved on the locking portion and is screwed with the locking portion, and the nut can lock the wire ear; the operating assembly is sleeved on the nut and is clamped and connected to the nut, and the operating assembly can tighten the nut. The complete set of grounding wires for low-voltage circuit breakers provided by the present invention is fixedly connected to the wiring terminal of the low-voltage circuit breaker through the clamping portion, the wire ear of the grounding wire is sleeved on the locking portion, the nut is sleeved on the locking portion and is screwed with the locking portion, and the screwing operating assembly is used to tighten the nut, so that the nut locks the wire ear of the grounding wire. The structure is simple and easy to operate.

A low voltage (LV) circuit for mitigating voltage fluctuations caused by energy regeneration of electric vehicles, the LV circuit comprising a control unit configured to receive at least one indication of a regenerative energy from an electric power assisted steering (EPAS) motor and send at least one control signal to control at least one switch such that the regenerative energy is absorbed by a load when at least one indication is larger than a threshold.