37 results about "Pulse operation" patented technology

Device for controlling at least one light-emitting diode (LED1) to generate short light pulses (LP),- with an H-bridge (H) consisting of a first half-bridge (HB1: T1, T2) with a first transistor (T1) and a second transistor (T2) and a second half-bridge (HB2: T2, T3) with a third transistor (T3) and a fourth transistor (T4),- wherein the H-bridge (H) is controlled by a control unit (ST) and- wherein the H-bridge (H) can be operated by the control unit (ST) in pulsed mode (GPB) and in quasi-continuous mode (QDB) and- wherein the first half-bridge (HB1: T1, T2) is supplied with electrical energy from a first positive supply voltage (VCC1) and a first negative supply voltage (GND1) and- wherein the second half-bridge (HB2: T3,T4) is supplied with electrical energy from a second positive supply voltage (VCC2) and a second negative supply voltage (GND2) and- wherein the light-emitting diode (LED1) is connected with its cathode (K) to the output of the first half-bridge (HB1: T1, T2) and- wherein the light-emitting diode (LED1) is connected with its anode (A) to the output of the second half-bridge (HB2: T3, T4) and- wherein the first positive supply voltage (VCC1) and the second positive supply voltage (VCC2) can be equal and- wherein the first negative supply voltage (GND1) and the second negative supply voltage (GND2) can be equal and- wherein the light source, in particular the one or more light-emitting diodes (LED1), represents the load of the H-bridge (H) between the output of the first half-bridge (HB1: T1, T2) and the output of the second half-bridge (HB2: T3, T4) and- wherein the control device (ST) is designed to operate in pulsed mode (GPB) a “PAn” condition,in which a forward voltage in the forward direction of the light-emitting diode (LED1) is applied to the light-emitting diode (LED1) through the H-bridge (H), is not maintained by the H-bridge (H) for longer than a turn-on time (τpp), and- wherein the control device (ST) is designed so that in pulsed operation (GPB) a "PAus" state, in which a reverse voltage against the forward direction of the light-emitting diode (LED1) is applied to the light-emitting diode (LED1) through the H-bridge (H), is not maintained by the H-bridge (H) for longer than a clearing time (τpn), and- wherein the clearing time (τpn) is less than the charge carrier lifetime (τ) in the PN junction of the light-emitting diode (LED1), and- wherein the turn-on time (τpp) is less than the charge carrier lifetime (τ) in the PN junction of the light-emitting diode (LED1).

A radar sensor has an analog front-end with an in-phase, I, channel output and a quadrature-phase, Q, channel output. The radar sensor operates in a pulsed operation. A mode switch is used to couple a selected one of the I and Q-channel outputs to an analog processing circuit. The mode switch is operable in a first, I-channel, mode, a second, Q- channel, mode, and a third, time division multiplexing dual-channel, mode. In this way, the radar can operate in power efficient single-channel mode or a dual-channel mode for greater robustness to interference.

To provide various methods, controllers, and electric machine systems that facilitate pulsed operation of an electric machine to improve energy efficiency of the electric machine.SOLUTION: Selected transitions between the pulsed power levels are controlled to provide a third order or higher order transition torque profile. In various implementations, third order, fifth order, or higher order transition profiles are used. The use of such a transition torque profile may improve the NVH characteristics of the electric machine while providing energy efficient pulse transitions.SELECTED DRAWING: Figure 3

An electric machine controller arranged to direct a power converter to cause a pulsed operation of an electric machine in selected operational ranges to deliver a desired output and to cause a continuous operation of the electric machine in selected operational ranges is provided. A ramp generator is adapted to provide a ramping between the pulsed operation and the continuous operation. In some embodiments, the ramp generator utilizes a quadratic, cubic or higher order ramping function. In some embodiments, during a first portion of the transitional period, the ramp generator causes pulsing between a first ramped transitional torque level and a second ramped transitional torque level that is lower than the first transitional torque level, and during a second portion of the transitional period, the ramp generator causes the electric machine to generate substantially zero torque in intervals between transitional pulses while ramping the first ramped transitional torque level.

A laser apparatus for generating a sub- 190 nanometer laser beam includes a deep-ultraviolet solid-state laser source to generate an initial deep-ultraviolet laser beam, at least one mid-infrared solid-state laser source to generate at least one respective mid-infrared laser beam, and at least one lithium triborate crystal to generate an output deep-ultraviolet laser beam from the initial deep-ultraviolet and mid-infrared laser beams via sum-frequency generation. Each mid-infrared solid- state laser source includes (a) a holmium-, thulium-, or chromium-doped gain crystal or gain fiber or (b) an optically-pumped semiconductor gain material to generate the respective mid-infrared laser beam. The laser apparatus may be configured for continuous-wave and pulsed operation, thus offering versatile solutions for applications requiring DUV laser radiation below 190 nanometers. Advantageously, the present approach relies on lithium triborate. Lithium triborate crystals can be grown with the quality and dimensions needed for industrial applications.

The present invention provides technology that achieves more accurate measurement while preventing luminance saturation.　The present technology provides a measurement device, etc., comprising a light source capable of switching between pulse operation and CW operation, and a control unit that controls the switching between pulse operation and CW operation, wherein the light source includes a saturable absorber that exhibits a quantum-confined Stark effect (QCSE). The control unit may control a voltage applied to the saturable absorber to switch between pulse operation and CW operation.

Headlight (SW), in particular for use in vehicles,- with at least one first LED (LED1) as a light source and- with an H-bridge (H) for controlling and supplying the first LED (LED1) with electrical energy,- wherein the headlight (SW) has a first operating mode (QDB) in which the first LED is used as a light source for illumination purposes and- wherein the headlight (SW) has a second operating mode (GPB) in which the first LED is used as a light source for generating light pulses (LP) in a function as a component of an optical data communication device and- wherein the H-bridge (H) is controlled by a control device (ST) and- wherein the H-bridge (H) can be operated by the control device (ST) in pulsed operation (GPB) in the second operating mode and in quasi-continuous operation (QDB) in the first operating mode and- wherein the control device (ST) is designed tothat in pulsed operation (GPB) a "PAn" state, in which a forward voltage in the forward direction of the light-emitting diode (LED1) is applied to the light-emitting diode (LED1) through the H-bridge (H), is not maintained for longer than a turn-on time (τpp) by the H-bridge (H), and- wherein the control device (ST) is designed such that in pulsed operation (GPB) a "PAus" state, in which a reverse voltage against the forward direction of the light-emitting diode (LED1) is applied to the light-emitting diode (LED1) through the H-bridge (H), is not maintained for longer than a turn-off time (τpn) by the H-bridge (H), and- wherein the turn-off time (τpn) is less than the charge carrier lifetime (τ) in the PN junction of the light-emitting diode (LED1), and- wherein the turn-on time (τpp) is less than the charge carrier lifetime (τ) in the PN junction of the light-emitting diode (LED1) is.,

A method for controlling the operation of at least one first electric machine on board a vehicle, wherein the vehicle has at least one resonant frequency, is provided. Pulsed operation of the first electric machine is conducted such that it provides a desired average output, the pulsed operation causing the first electric machine to oscillate between a first output level greater than the desired output level and a second output level less than the desired output level. At least some transitions between the first and second output levels are controlled. At least one notch filter for the at least one resonant frequency of the vehicle is provided.

Described herein are methods for developing and maintaining pulses that are produced from compact resonant cavities using one or more Q-switches and maintaining the output parameters of these pulses created during repetitive pulsed operation. The deterministic control of the evolution of a Q-switched laser pulse is complicated due to dynamic laser cavity feedback effects and unpredictable environmental inputs. Laser pulse shape control in a compact laser cavity (e.g., length / speed of light<˜1 ns) is especially difficult because closed loop control becomes impossible due to causality. Because various issues cause laser output of these compact resonator cavities to drift over time, described herein are further methods for automatically maintaining those output parameters.

Headlights (SW), in particular for use in vehicles, - with at least one first LED (LED1) as a light source, - wherein the headlight (SW) has a first operating mode (QDB) in which the first LED (LED1) is used as a light source for illumination purposes, and - wherein the headlight (SW) has a second operating mode (GPB) in which the first LED (LED1) is used as a light source for generating light pulses (LP) in a function as a component of an optical measuring device, - with an H-bridge (H) for controlling and supplying the first LED (LED1) with electrical energy, - wherein the H-bridge (H) is controlled by a control device (ST), and - wherein the H-bridge (H) can be operated by the control device (ST) in pulsed operation (GPB) in the second operating mode and in quasi-continuous operation (QDB) in the first operating mode, and - wherein the control device (ST) is designed tothat in pulsed operation (GPB) a "PAn" state, in which a forward voltage in the forward direction of the light-emitting diode (LED1) is applied to the light-emitting diode (LED1) through the H-bridge (H), is not maintained for longer than a turn-on time (τpp) by the H-bridge (H), and- wherein the control device (ST) is designed such that in pulsed operation (GPB) a "PAus" state, in which a reverse voltage against the forward direction of the light-emitting diode (LED1) is applied to the light-emitting diode (LED1) through the H-bridge (H), is not maintained for longer than a turn-off time (τpn) by the H-bridge (H), and- wherein the turn-off time (τpn) is less than the charge carrier lifetime (τ) in the PN junction of the light-emitting diode (LED1), and- wherein the turn-on time (τpp) is less than the charge carrier lifetime (τ) in the PN junction of the light-emitting diode (LED1) is.,

This application discloses a method, apparatus, electronic device, and storage medium for evaluating the performance of quantum operation gates. The method includes: inserting a delay of a target duration between adjacent Clifford gates in a quantum benchmark test sequence to obtain a first benchmark test sequence; determining a first incoherent error based on the quantum benchmark test sequence and the first benchmark test sequence; the target duration is n times the duration of a pulse operation gate rotating 90° around a target axis; inserting n pulse operation gates rotating 90° around a target axis between adjacent Clifford gates in a purity random benchmark test sequence to obtain a second benchmark test sequence; determining a second incoherent error based on the purity random benchmark test sequence and the second benchmark test sequence; using the difference between the second incoherent error and the first incoherent error as the target incoherent error; and evaluating the performance of the quantum operation gate based on the target incoherent error, thereby realizing the performance evaluation of microwave generating devices and microwave transmission links.

The present application relates to the technical field of plasma control of nuclear fusion tokamak device, and particularly relates to a plasma control system configuration parameter distribution method.The technical scheme comprises deploying parameter analysis plug-ins of auxiliary components and algorithm components on real-time nodes, and the auxiliary components and the algorithm components interact through shared memory;in the discharge preparation stage, the auxiliary components obtain configuration parameters from a configuration parameter management component of a master node, parameter analysis plug-ins of each algorithm component perform parameter preloading, and the parameter analysis plug-ins perform real-time parameter analysis in the discharge control stage.The present application significantly reduces memory occupation and time consumption of configuration parameter distribution, meets the massive parameter management demand of long-pulse operation;through shared memory communication and preloading mechanism, the system high real-time is guaranteed, and time margin is left for algorithm operation;combined with dynamic parameter analysis and modular design, flexible expansion of algorithm components and dynamic switching of control strategies are supported, and redundant parameter occupation resources are avoided.

Device for controlling at least one light-emitting diode (LED1) to generate short light pulses (LP), - with an H-bridge (H), • consisting of a first half-bridge (HB1) with a first transistor (T1) and a second transistor (T2) and • consists of a second half-bridge (HB2) with a third transistor (T3) and a fourth transistor (T4), and - with a control unit (ST) of the H-bridge and - wherein the control unit (ST) is designed to operate the H-bridge in pulsed and continuous operation and - wherein the light-emitting diode (LED1) has an anode (A) and a cathode (K) and - where the light-emitting diode (LED1) is inserted into the H-bridge (H) as a bridge load, • wherein the light-emitting diode is connected with its cathode (K) to the output of the first half-bridge (HB1: T1, T2) and • wherein the light-emitting diode (LED1) is connected with its anode (A) to the output of the second half-bridge (HB2: T3, T4) and - where the H-bridge (H) is made of • a first positive supply voltage (VCC1) and • a second positive supply voltage (VCC2) and • a first negative supply voltage (GND1) and • a second negative supply voltage (GND2) is supplied with electrical energy for transmission to the light-emitting diode (LED1) and • where the first transistor (T1) is connected to the first positive supply voltage (VCC1) and • where the third transistor (T3) is connected to the second positive supply voltage (VCC2) and • where the second transistor (T2) is connected to the first negative supply voltage (GND1) and • where the fourth transistor (T4) is connected to the second negative supply voltage (GND2) and • wherein the voltage that can be applied to the light-emitting diode (LED1) by the H-bridge in pulsed operation is higher in magnitude than the voltage that can be applied to the light-emitting diode (LED1) by the H-bridge in continuous operation in the same direction in the forward direction of the first LED (LED1) and / or in the reverse direction of the first LED (LED1) and • wherein the control device (ST) is designed to ensure that in pulse operation a “PAn” state, in which a forward voltage is applied to the first LED (LED1) in the forward direction, does not last longer than a switch-on time (τ) pp ) is taken, and • wherein the control device (ST) is designed so that in pulse operation a “PAuse” state, in which a blocking voltage is applied to the first LED (LED1) against the direction of flow, does not last longer than a clearing time (τ pn ) is taken, and • where the clearing time (τ pn ) smaller than the charge carrier lifetime (τ) in the PN junction of the first light-emitting diode (LED1) and • where the on-time (τ pp ) smaller than the charge carrier lifetime (τ) in the PN junction of the first light-emitting diode (LED1) and - wherein another transistor (T12) is connected to a third positive supply voltage (VCC3) at one terminal and to another terminal, the output of the second half-bridge (HB2: T3, T4) of the H-bridge (H) and - where the control connections (G1, G2, G3, G4, G12) are not connected to each other.

A memory device includes a memory block, peripheral circuit, and control logic. The memory block includes a plurality of pages coupled to a plurality of word lines, respectively. The peripheral circuit is configured to perform a program loop including a program pulse operation of applying a program voltage to a selected word line, and a verify operation of applying at least one verify voltage corresponding to the program voltage to the selected word line and applying a verify pass voltage to unselected word lines. The control logic is configured to increase a level of the verify pass voltage applied to at least one unselected word line among the unselected word lines whenever the peripheral circuit performs the next program loop when threshold voltages of memory cells included in a page coupled to the selected word line are greater than a reference level.

System for amplifying an RF signal generated in pulse operation, wherein the system comprises (300; 400): a first amplifier (313; 409), wherein the first amplifier (313; 409) is configured to amplify the RF signal (320) which is applied to an input (Vin; VINP, VINN) of the first amplifier (313; 409), a switchable impedance element (TR2; TR2P, TR2N) which is coupled to an output of the first amplifier (313; 409), wherein the switchable impedance element (TR2; TR2P, TR2N) is designed such that it includes a first impedance, when the RF signal (320) is active, and that it includes a second impedance when the RF signal (320) is not active, and a second amplifier (311; 411) which is coupled to the output of the first amplifier (313; 409), wherein the switchable impedance element comprises an LDMOS transistor (TR2; TR2P, TR2N).

The application relates to the technical field of power line communication and discloses a bit synchronization method suitable for a medium-voltage carrier system, which comprises the following steps: a transmitting end cyclically generates an m sequence as a bit synchronization code stream; the bit synchronization code stream is modulated into a bipolar NRZ code; inter-symbol interference is eliminated by using shaping filtering; after frequency up-conversion, the bit synchronization code stream is sent out through a transmitter; after frame synchronization ends, a phase comparison is used to perform plus-minus pulse operation on a local timing signal and correlation is performed on the received bit synchronization code stream; after bit synchronization deviation is calculated, the deviation time is compensated to the frame synchronization end time. The application is based on the medium-voltage carrier communication system, the correlation characteristics of the m sequence and the difference between the local high-frequency clock and the transmission data rate are utilized on the basis of frame synchronization to compensate for the phase deviation caused by frame synchronization, so that more accurate synchronization end time is obtained, the precision of the clock synchronization system is improved, the deviation caused by synchronization in the clock synchronization technology is reduced to the nanosecond level, and the workload of fault positioning and checking is reduced.

The application discloses a two-dimensional array pulse self-synchronization wafer laser structure, which comprises an inner resonant cavity composed of a first reflecting layer, a saturable absorber, a wafer array gain medium and a second reflecting layer, and an outer resonant cavity composed of a phase grating structure layer and a third reflecting layer, and the inner resonant cavity and the outer resonant cavity form a composite resonant cavity; a pump light source emits pump light which is injected into the composite resonant cavity through a pump module, passes through the wafer array gain medium multiple times, and generates array oscillation laser in the inner resonant cavity; simultaneously, the saturable absorber absorbs and modulates the array oscillation laser, starts and maintains the array pulse operation; the array laser pulse enters the outer resonant cavity through the second reflecting layer, the phase grating structure layer causes the array pulse laser to be coupled, the array pulse laser returns to the inner resonant cavity through the third reflecting layer to be mutually injected, modulated and locked, the array pulse laser is synchronously operated in the composite resonant cavity, the collective mode laser pulse is formed, and the self-synchronized high-energy coherent array pulse output is realized.

To prevent an excessive rush current without increasing the size of a power supply for a load which performs pulse operation.SOLUTION: A power supply device according to an embodiment includes a capacitor, a time constant circuit that adjusts a charging / discharging current of the capacitor, a power switch that selectively supplies a charging current from a main power supply to the capacitor, an output switch that intermittently connects an output terminal of the capacitor and a load in response to a pulse signal and outputs a pulse voltage to the load, a comparison circuit that compares a terminal voltage of the capacitor with a reference voltage after the start of supply of the charging current from the main power supply by the power switch, and a control circuit that determines whether or not the voltage difference exceeds a threshold value, interrupts supply of the pulse voltage to the load in a period in which the voltage difference exceeds the threshold value, and controls the output switch so as to detect completion of charging of the capacitor and supply the pulse voltage to the load in a period in which it is determined that the voltage difference does not exceed the threshold value.SELECTED DRAWING: Figure 2

A laser device (1) is described, comprising a semiconductor laser (2) and a driving circuit (3) configured to operate the semiconductor laser (2) in pulsed operation, wherein: - the driving circuit (3) includes a switch (T1) switchable between an open state and a closed state; - the driving circuit (3) includes a first capacitor (C1) coupled to a power supply (5); - the switch (T1) is coupled to the first capacitor (C1); - the driving circuit (3) includes a second capacitor (C2); - the p-type contact (22) of the semiconductor laser (2) is capacitively coupled to the switch (T1) via the second capacitor (C2); - in the closed state of the switch (T1), the first capacitor (C1) discharges via the second capacitor (C2) and the semiconductor laser (2) to generate laser pulses; and - in the open state of the switch (T1), the second capacitor (C2) discharges. Furthermore, a method for operating the semiconductor laser (2) is described.

A method of controlling operation of at least a first of at least one electric machine on a vehicle is provided, where the vehicle has at least one resonant frequency. The first motor is directed to perform a pulsed operation to deliver a desired average output, where the pulsed operation causes the first motor to alternate between a first output level greater than the desired average output and a second output level less than the desired average output. At least some transitions between the first output level and the second output level are controlled. At least one notch filter is provided at at least one resonant frequency of the vehicle.

A generator suitable for the pulsed operation comprises a power factor correction circuit having an integrated circuit. The voltage detector input of the control circuit is upstream of and connected to an amplifier. The amplifier may be configured so that its amplification factor has a value of 1 in a first condition and takes a value larger than 1 in a second condition. Moreover, the amplification may be set to a value of larger than 1 only if the voltage at the converter output is inside a tolerance range that is provided for the usual operation of the power factor correction circuit. Outside of this tolerance range, the amplification of the amplifier is then exactly 1. In doing so, the usual operation of the integrated control circuit is not disturbed, particularly during start-up.

The invention belongs to the technical field of neutral beam injection in a controllable nuclear fusion auxiliary heating method, and discloses a runway type Faraday shielding structure for a radio frequency ion source. In the structure, a Faraday shielding cylinder comprises a runway-shaped shielding cylinder, a first water inlet pipe and a first water outlet pipe, the shielding cylinder comprises a cylinder side wall, a cylinder top wall and a first buried pipe water cooling structure, a gap is formed in the cylinder side wall, and the first water inlet pipe and the first water outlet pipe are connected with a first inlet and a first outlet of the first buried pipe water cooling structure respectively; the Faraday shielding back plate comprises a runway-shaped back plate, a second water inlet pipe and a second water outlet pipe, a second buried pipe water cooling structure is arranged in the back plate, and the second water inlet pipe and the second water outlet pipe are connected with a second inlet and a second outlet of the second buried pipe water cooling structure respectively. According to the invention, the power of the radio frequency coil can be improved, the device is suitable for a high-power and long-pulse operation system, and long-term stable operation of a high-power radio frequency electron source can be maintained.

The present invention relates to operating a filament of an X-ray tube. In order to provide X-ray tubes with improved wear out, a control device (10) for pulsed operation of a generator for an X-ray tube is provided. The X-ray tube may be controlled to provide a plurality of X-ray pulses, wherein two subsequent pulses are temporally separated by an emission pause. The emission pause comprises at least a first part and a second part. A filament current is provided to a cathode filament of the X-ray tube such that, in the emission pause between two subsequent pulses, during a first part of the pause a first filament current is provided and during a second part of the pause a second filament current is provided, the first filament current being lower than the second filament current. By operating the filament in this way, the filament temperature can be reduced, resulting in significantly less wear and longer lifetime of the X-ray tube.

Methods, systems, and devices for electric machine torque adjustment based on waveform multiples are disclosed herein. One electric machine controller, arranged to direct pulsed operation of an electric machine, utilizes a pulse controller that calculates a first average measured torque from sensed torque values over a first time period and a second average measured torque from sensed torque values over a second time period, wherein the first and second time periods are different time periods.

The invention discloses high-power LED circuit with pulsed operation for flashlights, comprising: LED group; energy storage capacitor, with one terminal electrically connected to the LED group, and the other grounded; NMOS transistor, with gate electrically connected to PWM to control signal, and source grounded; freewheeling diode, with input electrically connected to the drain of NMOS transistor, and output electrically connected to the LED group input; common mode choke, with one terminal electrically connected to the LED group output, and the other electrically connected to freewheeling diode input and the drain of NMOS transistor; mainly achieves the replacement of traditional HID (High Intensity Discharge Lamp) with pulse-resistant large-current LED in flashlight, significantly improve flashlight life; and compared to conventional LED flash, achieves ultra-compact LED flash with 50-100 times the power of larger LED flash photographic effect, with high portability significantly reducing photography equipment cost.

This invention discloses a method for evaluating the performance recovery of an electrolysis system after a pulsing operation. The method includes the following steps: Step 1: Collecting electrolysis system performance data for a baseline period before pulsing, the pulsing period, and the recovery evaluation period after pulsing; Step 2: Preprocessing the collected data; Step 3: Based on the preprocessed data from Step 2, fitting a natural decay trend within the baseline period before pulsing and extrapolating to obtain a non-interventional prediction curve; Step 4: Calculating four evaluation indicators within the recovery evaluation period after pulsing: recovery amount, recovery stability, improvement in decay slope, and recovery sustainability. The evaluation results can be used for selecting / recommending pulsing parameter combinations to achieve performance recovery and lifespan extension under energy consumption constraints.

The application discloses a long-pulse neutral beam ion source filament arc current power supply system and a control method, and relates to the technical field of neutral beam injection and plasma ion source power supply. The system comprises an ion source body, a grouped power supply array and a central control unit. The ion source body is internally provided with a filament. The grouped power supply array comprises N groups of power supply units, each group of power supply units comprises an independent filament power supply unit and an arc current power supply unit, and each group of power supply units is connected in parallel to the filament of the ion source body. The central control unit is in communication connection with the filament power supply units and the arc current power supply units of each group, and is configured to control the groups of power supply units to alternately operate, so as to alternately heat and supply power to the filament. According to the application, the same filament is connected in parallel by the multiple groups of power supply units, and the central control unit controls the groups of power supply units to alternately operate, so that the thermal load is balanced to prolong the service life of the filament. Meanwhile, the groups of power supply units are alternately powered, the plasma is continuously extracted, the discharge pulse width is improved, and the long-pulse operation requirement of magnetic confinement nuclear fusion is met.

Described herein are methods for developing and maintaining pulses that are produced from compact resonant cavities using one or more Q-switches and maintaining the output parameters of these pulses created during repetitive pulsed operation. The deterministic control of the evolution of a Q-switched laser pulse is complicated due to dynamic laser cavity feedback effects and unpredictable environmental inputs. Laser pulse shape control in a compact laser cavity (e.g., length / speed of light <˜1 ns) is especially difficult because closed loop control becomes impossible due to causality. Because various issues cause laser output of these compact resonator cavities to drift over time, described herein are further methods for automatically maintaining those output parameters.

The generator (11) suitable for pulse operation according to the invention includes a power factor correction circuit (21) with an integrated circuit (31). The voltage detector input (VSENSE) of the control circuit (31) is connected upstream to an amplifier (35). It is possible to configure the amplifier (35) such that its amplification factor has a value of 1 under a first condition and a value greater than 1 under a second condition. Furthermore, the amplification factor can be set to a value greater than 1 only when the voltage at the converter output is within the tolerance provided for the normal operation of the power factor correction circuit (21). Outside this tolerance range, the amplification factor of the amplifier (35) is then exactly 1. In doing so, especially during startup, the normal operation of the integrated control circuit (31) is not disturbed.