622 results about "Dividing circuits" patented technology

The invention discloses a conversion circuit for measuring time sequence arc delay of a standard unit, which belongs to the field of integrated circuits and comprises a time sequence arc delay clock generation circuit of the standard unit, a clock frequency dividing circuit, a control module and an IO output module. The standard unit time sequence arc delay clock generation circuit connects a plurality of same standard units in series to form a test chain, delays the time sequence arc of a single standard unit, and outputs the time sequence arc in a stable-frequency clock form; the clock frequency division circuit performs frequency division on the stable clock generated by the standard unit time sequence arc delay clock generation circuit through an algorithm, so that the stable clock can be detected by a machine table; the control module selects a plurality of standard cell types from the control signal, selects a time sequence arc, selects a cascade stage number, and controls the output of the clock frequency dividing circuit; and the IO output module outputs the frequency-divided clock generated on the chip through an IO port so as to be detected by a machine. According to the invention, extra power consumption, area and design complexity caused by an extra on-chip high-frequency clock can be effectively avoided.

The invention discloses an electrostatic protection circuit and method, equipment and a storage medium, and relates to the technical field of electrostatic protection, and the circuit comprises a metal sheet connecting plug, an electrostatic discharge circuit, an electrostatic sampling circuit and a microcontroller; the metal sheet connecting plug is electrically connected with the metal sheet, the electrostatic discharge circuit and the electrostatic sampling circuit respectively; the electrostatic sampling circuit comprises a voltage division circuit and a conditioning circuit, and the voltage division circuit is electrically connected with the metal sheet connecting plug and the conditioning circuit; and the microcontroller is in communication connection with the electrostatic sampling circuit and the electrostatic discharge circuit and is used for performing analog-to-digital conversion on the output voltage of the conditioning circuit to obtain electrostatic voltage and controlling the electrostatic discharge circuit to be switched on or switched off. The static voltage of the operator can be acquired in real time through the microcontroller so as to accurately judge whether the static discharge of the current operator is in place or not, so that the condition of hot-line operation of corresponding equipment when the static discharge is insufficient is reduced, and the accuracy and reliability of the static discharge are improved.

The invention discloses an optical Gray code encoder temperature compensation method and system based on an NTC resistance network, and the method comprises the steps: calibrating a PD signal drift law in a working temperature range, designing an NTC voltage division circuit matched with the law, and integrating the NTC voltage division circuit to a comparator, thereby achieving the real-time offset of the PD signal temperature drift. According to the scheme, the defects that in the prior art, complexity is high and cost is high are overcome, compensation precision within + / -0.5% is achieved only through basic electronic elements, the response speed reaches the microsecond level, cost is reduced by 60% or above, the method is suitable for wide-temperature-range scenes ranging from-40 DEG C to 85 DEG C, and a low-cost and high-precision temperature compensation solution is provided for precise measurement of high-end equipment.

The present disclosure discloses an electrical discharge circuit. A voltage-dividing circuit performs voltage division on a voltage input terminal. A detection circuit generates a boosted detection signal. A first inverter is coupled to a first voltage feeding terminal and a second inverter input terminal. A second inverter is coupled to a first inverter output terminal and a ground terminal. A capacitor circuit of a RC circuit is coupled to the first voltage feeding terminal through a resistor to be charged to provide electric charges to the inverter input terminals. A first switch circuit is coupled to one of the inverter input terminals and the ground terminal. The boosted detection signal turns on and off the first and the second switch circuits respectively when an ESD input occurs such that a first and a second discharge transistors controlled by the inverter output terminals turn on to discharge the voltage input terminal.

The invention discloses a broadband low-power-consumption receiving and transmitting shared phase shifter which comprises a differential signal common port, a frequency sampling and control circuit, a dual-mode orthogonal generation circuit and a passive vector modulation synthesis circuit. The differential signal common port comprises a common input / output port interface of RF + and RF-differential radio frequency signals; the frequency sampling and control circuit is composed of a frequency sampling circuit, a frequency detection circuit and a logic control unit. The dual-mode orthogonal generation circuit is composed of a frequency selection change-over switch, a multi-phase filter, a coupling transformer, a matching network 1 and a matching network 2. The passive vector modulation synthesis circuit is composed of two passive vector modulation arrays and two combining / power dividing circuits.

The invention discloses an electronic device and a voltage leakage circuit, the electronic device comprises a control circuit and a power circuit, the control circuit is connected with the power circuit and is used for controlling the power circuit to perform leakage or stop leakage, and the control circuit comprises a voltage division circuit; the comparison circuit is connected with the voltage division circuit and is used for receiving the first voltage from the voltage division circuit and comparing the first voltage with a preset reference voltage; the driving circuit receives the first reference voltage, is connected with the comparison circuit and the power circuit, and is used for outputting the first reference voltage to the power circuit when the first voltage is greater than or equal to the reference voltage so as to control the power circuit to discharge; one end of the hysteresis circuit is connected with the power circuit, the other end of the hysteresis circuit is connected between the voltage division circuit and the comparison circuit, and the hysteresis circuit is used for increasing the first voltage when the driving circuit outputs the first reference voltage to the power circuit. The power circuit is controlled through the voltage division circuit, the comparison circuit and the driving circuit, the cost can be reduced, and the occupied space is small.

The invention relates to the technical field of semiconductor design and manufacturing, in particular to an operation method and a design method of a multi-core chip and the multi-core chip. According to the technical scheme, circuit logics which can accept manufacturing defects are divided into the first logic group, and circuit logics which cannot accept manufacturing defects are divided into the second logic group; by reading the defect state of at least one computing core on the multi-core chip, the availability of a first logic group capable of accepting manufacturing defects in the computing core can be determined; and when the defect state indicates that the first logic group is unavailable, configuring a control register in the computing core to close the first logic group, and keeping a second logic group which is not accepted to manufacture defects in the computing core in a running state without influencing the functional circuit logic of the computing core. According to the technical scheme, the circuit logic, capable of accepting manufacturing defects, of the multi-core chip still has usability when the manufacturing defects occur, and the overall yield of manufacturing of the multi-core chip is improved in a disguised mode.

The invention discloses a final-stage voltage tracking anti-clipping circuit for an audio power amplifier, and relates to the technical field of power amplifiers, and the circuit comprises a voltage division circuit which is used for receiving final-stage voltage from target power amplifier equipment and generating a combined voltage signal; the audio attenuation module is used for receiving an audio input signal and a final-stage voltage, and judging whether amplitude limiting modulation is carried out on the audio input signal or not to complete power amplifier output by judging whether a starting signal is received or not; and the starting judgment module is used for receiving the combined voltage signal and the first output signal, and comparing the combined voltage signal with the first output signal to generate a starting signal. According to the invention, the collected final-stage voltage of the target power amplifier is set as the dynamic amplitude limiting threshold, so that an over-high signal can be effectively suppressed to a safe range quickly when the power supply drops instantaneously, and the effects of avoiding hearing deterioration caused by power amplifier signal waveform truncation and avoiding potential safety hazards caused by amplitude limiting and topping to the loudspeaker are achieved.

The invention discloses a high-voltage positive and negative pulse detection circuit, which relates to the technical field of signal conditioning, and is characterized in that a voltage division circuit is responsible for attenuating input pulse signals, a switching diode is responsible for rectification and inputting positive and negative pulse signals into corresponding conditioning circuits respectively, and a charging circuit is responsible for maintaining pulse width characteristics of the signals; and the steepness of the signal edge is ensured by the comparator, and FPGA identification can be realized. Uncertain high-voltage pulse signals can be processed, and application scenes are diversified. The edge characteristic, pulse width and pulse direction of the pulse signal can be identified, and the signal processing capability is prominent.

The invention provides a charge pump control circuit, a chip and electronic equipment, and relates to the technical field of power management chips, and the circuit comprises a voltage division circuit, a reference voltage generation circuit, a comparison circuit and a charge pump circuit. The voltage division circuit comprises an input end, a first control end and a second control end, the input end is used for accessing auxiliary voltage, the first control end is used for accessing charge pump voltage, and the second control end is used for accessing power supply voltage; the voltage division circuit generates divided voltage; the reference voltage generation circuit generates a first reference voltage and a second reference voltage. The comparison circuit compares the divided voltage with the first reference voltage and the second reference voltage to obtain corresponding control signals; the charge pump circuit boosts based on the power supply voltage according to the control signal to obtain a charge pump voltage. The current required by the voltage division circuit is provided through the auxiliary voltage, and the charge pump voltage is only used for providing the control voltage signal of the voltage division circuit, so that the current load of the charge pump voltage is reduced, and the power consumption is reduced.

The invention provides a driving circuit and a display panel, a gate driving circuit of the driving circuit comprises a cascade transmission circuit, an output circuit and an output frequency dividing circuit, the output circuit is electrically connected with the cascade transmission circuit, the output frequency dividing circuit is connected between the cascade transmission circuit and the output circuit, and the output circuit is electrically connected with at least one clock signal line. The clock signal lines connected with two adjacent stages of gate drive circuits are different, and in each clock signal line, the width between the starting moments of two adjacent effective levels is greater than or equal to the product of the width of the effective level and 8; the width between two adjacent effective levels in each clock signal line is increased, so that the width between ripples caused by jumping of clock signals is increased, the situation that a data writing stage of a pixel driving circuit in the display panel is not overlapped with the ripples is avoided, the influence of the ripples on sub-pixels is eliminated, and the display quality is improved. The phenomenon of frequency division boundary abnormity in the frequency switching area is avoided, and the display effect of the display panel is improved.

The utility model discloses a DC power supply input protection circuit. The transient absorption circuit is used for absorbing transient voltage spike pulse generated by input voltage of the power supply; the voltage stabilizing circuit is used for generating stable voltage when the power supply is input in a wide voltage range; the second voltage division circuit and the power supply output control switch circuit are connected in parallel and are arranged between the power supply input end and the power supply output end of the direct-current power supply, and the first voltage division circuit can divide the stable voltage generated by the voltage stabilizing circuit; the first voltage division circuit is connected with the in-phase end of the comparator to provide reference voltage for the comparator, the second voltage division circuit is connected with the anti-phase end of the comparator to provide input voltage for the comparator, and the comparator can compare the reference voltage with an input voltage signal. When the input voltage is higher than the reference voltage, the output end of the comparator outputs a signal for controlling the switching circuit to close to the power supply. The overvoltage protection circuit is sufficient and accurate in overvoltage protection, can be applied to a relatively wide voltage range, and is low in cost.

The invention discloses a fan device, and particularly relates to a fan device capable of automatically switching a rotating speed curve according to a control signal so as to control the rotating speed. The fan device comprises a control unit and an input interface. The control unit stores a plurality of rotating speed curves and control parameters corresponding to the rotating speed curves. The input interface receives a control signal from the outside. And the control unit selects a corresponding rotating speed curve according to the received control signal, and controls the rotating speed of the fan according to a control parameter corresponding to the rotating speed curve. Wherein the control signal can comprise analog voltage, and the frequency or duty ratio of the PWM signal, and is realized through a voltage division circuit or single signal input. According to the fan device, a fan solution with multi-platform compatibility and flexible control capability can be provided, and the fan device has operation modes such as silence, efficiency and abnormal protection.

The invention relates to the technical field of photoelectric detection, and provides a single-photon counter circuit for weak light detection based on a photomultiplier, and the single-photon counter comprises a photoelectric conversion circuit, a differential amplification circuit, a threshold comparison circuit and a signal shaping circuit. The photoelectric conversion circuit is composed of a photomultiplier, a high-voltage power supply circuit and a voltage division circuit, detects weak light signals and outputs two paths of current signals through photoelectric conversion. The differential amplification circuit carries out differential amplification on the two current signals through a differential amplifier. The threshold comparison circuit compares two input signals, filters out signals with the amplitude lower than 1 / 2 of a set threshold, and outputs a single-path effective signal. And the signal shaping circuit shapes the effective signal and finally outputs the effective signal in a TTL pulse mode. According to the single photon counter circuit for weak light detection, the background dark counting rate is low, the sensitivity is high, and the counting unit module specially used for digital pulse statistics is connected behind the single photon counter circuit for counting single photons.

The utility model discloses a sine pulse width modulation circuit and a switching power supply, and the circuit comprises a sine wave generation circuit which comprises a voltage division circuit, an RC oscillation circuit, a differential comparison amplification circuit, and a gating circuit; the voltage division circuit is used for carrying out voltage division processing on power supply voltage input by the input end of the sine pulse width modulation circuit and then outputting a direct-current voltage signal; the RC oscillating circuit is used for converting the direct-current voltage signal into an alternating-current oscillating signal and outputting the alternating-current oscillating signal; the differential comparison amplification circuit is used for comparing and amplifying the AC oscillation signal and the DC voltage signal and then outputting an AC voltage signal; the gating circuit is used for gating the AC voltage signal and then outputting a sine wave signal; the negative half-cycle rectifying circuit is used for overturning and rectifying a negative half-cycle signal in the sine wave signal and then outputting the negative half-cycle signal; and the positive half-cycle rectifying circuit is used for overturning and rectifying a positive half-cycle signal in the sine wave signal and then outputting the positive half-cycle signal. According to the utility model, the cost, volume and weight of the product can be reduced.

A hybrid switching converter with a single inductor and multiple outputs is disclosed for converting an input voltage to a first output voltage and a second output voltage. The hybrid switching converter includes a sub-switching converter configured to convert the input voltage to an intermediate voltage, and first and second output switches configured to respectively convert the intermediate voltage to the first and second output voltages. An inductor has one terminal coupled to a switched-capacitor voltage dividing circuit and another terminal coupled to a second voltage. Under different configurations, the inductor is coupled to either a negative terminal or a positive terminal of a first capacitor, thereby converting the first voltage to either half the first voltage and a reference potential, or the first voltage and half the first voltage. The first voltage and the second voltage respectively correspond to one of the input voltage and the intermediate voltage.

The utility model discloses a control circuit of a domain controller, and relates to the technical field of circuits. Comprising a voltage monitoring circuit located between the storage battery and the primary power supply. The voltage monitoring circuit comprises a first processor, a first voltage division circuit and a first switch. When the voltage of the first input end is detected to be greater than or equal to an overvoltage threshold value, or the voltage of the second input end is detected to be smaller than an undervoltage threshold value; and controlling a first output end of the first processor to output a signal for controlling the first switch to be in an off state, and controlling a third output end of the first processor to output a signal for representing that the voltage of the storage battery is in an under-voltage or over-voltage state to a system-on-chip. Under-voltage or over-voltage detection of the storage battery is achieved, and when it is detected that the storage battery is in an under-voltage or over-voltage state, the first switch is controlled to be turned off, that is, under-voltage turn-off of the power supply can reduce static power consumption of a product during under-voltage; the overvoltage turn-off power supply prevents each stage of power supply from being damaged, and the reliability of the domain controller and the product is improved.

The utility model discloses a driving circuit for improving sound pressure of a piezoelectric buzzer. The driving circuit comprises a master control circuit, a coupling circuit, a filter circuit, an operational amplifier circuit, a voltage division circuit, a current limiting circuit, the piezoelectric buzzer, a low-pass filter circuit and an mos tube switching circuit. The corresponding end of the master control circuit is electrically connected with the corresponding ends of the coupling circuit, the low-pass filter circuit and the current limiting circuit. The coupling circuit is electrically connected with the voltage division circuit and the corresponding end of the piezoelectric buzzer through the filter circuit. The low-pass filter circuit is electrically connected with the corresponding end of the voltage division circuit through the operational amplifier circuit; and the current limiting circuit is electrically connected with the corresponding end of the piezoelectric buzzer through the mos tube switching circuit. The driving circuit designed by the utility model is low in cost, and can achieve the effect of improving the sound pressure of the piezoelectric buzzer.

The application discloses a DC-DC converter circuit based on over-temperature protection threshold adjustment, and an over-temperature detection module comprises: a first transistor circuit, the base of the transistor is connected with the reference voltage VBG output end of a band gap reference module, a positive temperature coefficient voltage proportional to absolute temperature is generated; a voltage dividing circuit input end is connected with the positive temperature coefficient voltage output end, the positive temperature coefficient voltage is divided to generate a detection voltage; a second transistor circuit, the base of the transistor is connected with the detection voltage output end, an over-temperature protection signal OTP is output to shut down the main circuit of the converter; an adjustment resistance circuit receives a digital adjustment signal; the digital adjustment signal changes the voltage dividing ratio of the positive temperature coefficient voltage divided to the detection voltage by controlling the equivalent resistance value of the adjustment resistance circuit; the change direction of the voltage dividing ratio is opposite to the change direction of the reference voltage VBG caused by adjustment. The application significantly improves the accuracy, consistency and overall reliability of the over-temperature protection threshold.

The invention discloses an electrolytic capacitor polarity detection circuit, a detection method and a detection device. The detection circuit comprises a test interface used for connecting an electrolytic capacitor; the voltage division circuit is used for outputting sampling voltage; the voltage comparison circuit is used for comparing the sampling voltage with the reference voltage; the isolation circuit is used for outputting a level signal according to the comparison result; the judgment unit is used for judging whether the polarity of the electrolytic capacitor is reversed according to the level signal. The sampling voltage is compared with the reference voltage through the voltage comparison circuit; and meanwhile, the isolation circuit is arranged to realize electrical isolation, the circuit is protected, and a level signal is converted through the isolation circuit and transmitted to the judgment unit. The judgment unit judges whether the polarity of the electrolytic capacitor is reverse according to the level signal. Through the design, the problem of reverse connection of the electrolytic capacitor of the electric meter can be quickly identified in the production stage, and abnormal electric meters are screened out; the detection efficiency is high, the quality of outgoing products is improved, and the failure rate of the electric meter is remarkably reduced.

The utility model provides a relay switch control circuit and a relay output type PLC controller, and the relay switch control circuit comprises a relay which comprises a coil, a first contact and a second contact, and the coil is used for controlling the opening and closing of the first contact and the second contact; the load loop power supply input terminal is connected with the first contact and is used for being connected with an external power supply through an external load; the load loop power supply common terminal is connected with the second contact and is used for being connected with an external power supply; the voltage division circuit is connected with the load loop power supply input terminal; the isolation circuit is connected with the load loop power supply common terminal; the feedback circuit is respectively connected with the voltage division circuit and the isolation circuit; the external power supply is an alternating current power supply, the first contact and the second contact are closed, and the signal output end of the feedback circuit outputs a first signal; the external power supply is an alternating current power supply, the first contact and the second contact are disconnected, and the signal output end outputs a second signal. According to the utility model, the reliability of AC control is improved.

The invention relates to the technical field of chip testing, and discloses a circuit, method, device and system for measuring the voltage of a chip pin, and the circuit comprises a relay circuit which can be in a first state or a second state through a control signal; when the relay circuit is in the first state, the chip pin is directly connected with the ATE test channel through the relay circuit; the voltage division circuit is provided with a test end, a sampling end and a reference end; and when the relay circuit is in the second state, the test end is connected with the chip pin through the relay circuit, the sampling end is connected with the ATE test channel through the relay circuit, and the reference end is connected with the reference voltage. And when the relay circuit is in the second state, the voltage of the sampling end can be adjusted to a measurable range of the ATE test channel through the voltage division circuit and the reference voltage, so that the high voltage and the negative voltage exceeding the measuring range at the chip pin can be obtained through calculation.

This application discloses an MCU sleep / wake-up circuit, including a signal circuit, a second sleep control transistor Q2, a first hierarchical sleep control transistor Q1, an LDO chip U, and a control unit MCU. The signal circuit outputs a wake-up signal. The base of the second sleep control transistor Q2 is connected to the output terminal of the signal circuit through a current-limiting resistor R4, grounded through a voltage divider resistor R9, and connected to the enable terminal ENA through a current-limiting resistor R3. The enable terminal ENA is connected to the control unit MCU, the emitter is grounded, and the collector outputs a control signal. The control signal is input to the first hierarchical sleep control transistor Q1 through a bias voltage divider circuit. The emitter of the first sleep control transistor Q1 is connected to the power supply VIN, and the collector outputs the power supply voltage to the LDO chip U. The LDO chip U outputs its operating voltage to the control unit MCU. When the control unit MCU is working, it outputs a high level to the enable terminal ENA. This application can reduce the complexity of the sleep / wake-up system and achieve low-power sleep and reliable wake-up of the control unit MCU.

The invention discloses a broadband modeling method for a resistance-capacitance direct-current voltage divider of a direct-current voltage transformer, and the method comprises the steps: constructing a resistance-capacitance primary voltage dividing loop of the direct-current voltage transformer, and calculating a transfer function H1 (s) of the primary voltage dividing loop based on the resistance and capacitance of the resistance-capacitance primary voltage dividing loop; constructing a resistance-capacitance type secondary voltage division loop of the direct-current voltage transformer, and calculating a transfer function H2 (s) of the secondary voltage division loop; determining a transfer function G (s) of an isolation filter of the DC voltage transformer; the method comprises the following steps: connecting transfer functions of three links of a primary voltage division loop, a secondary voltage division loop and an isolation filter to obtain a transfer function simulation model of the whole DC voltage transformer, simulating the transfer function H (s) of the DC voltage divider by using simulation software, performing time domain analysis based on step response, and analyzing and comparing steady-state performance.

A pixel circuit includes a light emitting element, a first transistor, a capacitor, a driving circuit, a light emitting control circuit, a reset circuit, a voltage dividing circuit, and a data input circuit. The light emitting element receives a supply voltage. The first transistor receives an operating high voltage and a scan signal, and is coupled to the light emitting element. The driving circuit provides a driving current based on a driving voltage. The light emitting control circuit is coupled between the driving circuit and a ground voltage, and receives a light emitting signal. The reset circuit is coupled between a reference voltage and the driving voltage, and receives the scan signal. The voltage dividing circuit is coupled between the driving voltage and the capacitor, and receives the light emitting signal. The data input circuit is coupled between the capacitor and a data input signal, and receives the scan signal.

The utility model relates to a PD detection alarm protection circuit of a laser. The PD detection alarm protection circuit comprises a PD sensor, a resistance voltage division circuit, an in-phase proportion amplification circuit, a comparator circuit and a voltage reference circuit, the PD sensor collects a PD photocurrent signal of the laser and then sends the PD photocurrent signal to the resistance voltage division circuit; the resistance voltage division circuit converts the PD photocurrent signal into a PD voltage signal and then sends the PD voltage signal to the in-phase proportion amplification circuit; the in-phase proportional amplification circuit amplifies the PD voltage signal and then transmits the PD voltage signal to one input end of the comparator circuit, the other input end of the comparator circuit is connected with the voltage reference circuit, and the output end of the comparator circuit outputs a processed PD signal; by optimizing a pre-stage amplification framework and a post-stage reference design, the detection reliability is remarkably improved while the cost is reduced, and the detection response speed is very high. And real-time monitoring can be realized through an upper computer. The system is especially suitable for a safety protection system of industrial laser equipment.

Disclosed are a switching converter, an integrated circuit control device and a control method thereof. The switching converter comprises a pre-stage circuit, a voltage dividing circuit, a current detecting circuit, a post-stage circuit and a voltage detecting circuit. The pre-stage circuit is coupled between a first node and a second node to generate a first output voltage. The voltage dividing circuit is coupled between the first node and a third node to receive a bus voltage and provide a first voltage signal representing the bus voltage at an output terminal. The current detecting circuit is coupled between the third node and the second node. The post-stage circuit is coupled between the first node and the third node to receive the bus voltage and convert the bus voltage into a second output voltage. The voltage detecting circuit is coupled to the output terminal of the voltage dividing circuit to receive the first voltage signal, coupled to the third node to receive a second voltage signal, and generates a voltage detecting signal representing the first output voltage based on the first voltage signal and the second voltage signal. The switching converter has a low standby power loss.

This invention provides a reference voltage buffer circuit and calibration method for a high-precision analog-to-digital converter (ADC). The circuit includes a first operational amplifier whose inverting input is connected to a reference voltage, and whose output is fed back to the non-inverting input via a first driving transistor and a voltage divider circuit. A second operational amplifier's non-inverting input is connected to a first voltage divider node, its inverting input is connected to a second voltage divider node, and its output is connected to the gates of several third driving transistors and a second driving transistor. The drains of the third driving transistors are all connected to the first voltage divider node via switches. The width-to-length ratios of the second driving transistors and the several third driving transistors are linearly related. The switches are all input with logic control signals to control their states for linear calibration of the reference voltage. This invention uses binary encoding to control the switch states for linear calibration of the output reference voltage and significantly reduces the total resistance by designing a linear relationship between the resistors, thus reducing chip area and cost.

A power supply device with high output stability includes a voltage divider circuit, a full bridge rectifier, a resonant capacitor, a first transformer, a second transformer, a first switch element, a second switch element, a third switch element, an output stage circuit, and a detection and control circuit. The first switch element selectively couples the second transformer to the first transformer. The second switch element selectively couples the output stage circuit to the first transformer. The third switch element selectively couples the output stage circuit to the second transformer. The detection and control circuit appropriately controls the first switch element, the second switch element, and the third switch element according to a divided voltage from the voltage divider circuit and a capacitive voltage from the resonant capacitor.

Control device for aerosol inhalation device, includes operational amplifier including output terminal configured to generate voltage according to voltage applied to load configured to heat aerosol source and having correlation between temperature and electrical resistance value, control unit including input terminal and configured to perform processing based on voltage applied to the input terminal, and voltage dividing circuit configured to electrically connect the output terminal of the operational amplifier and the input terminal of the control unit. Power supply voltage of the operational amplifier is higher than power supply voltage of the control unit, and equals voltage applied to aerosol generation circuit including the load, and one of inverting input terminal and noninverting input terminal of the operational amplifier is electrically connected to the aerosol generation circuit.