40 results about "Regulatory circuit" patented technology

A motor power source regulation circuit, a control method and an electronic device are provided. The motor power source regulation circuit includes a power factor correction circuit, an isolation circuit, a first power source conversion circuit, a second power source conversion circuit and a control circuit. The isolation circuit includes a first switch sub-circuit and an isolation transformer. The power factor correction circuit regulates an AC input signal to a first DC signal. The first switch sub-circuit converts the first DC signal to a first AC signal. The isolation transformer converts the first AC signal to two or more second AC signals. The first power source conversion circuit converts the second AC signal to a DC drive signal and outputs it to a DC motor. The second power source conversion circuit converts the second AC signal to an AC drive signal and outputs it to an AC motor.

A voltage regulation circuit, device, and method are disclosed, which relate to the field of electronic technologies, to reduce a voltage regulation time, and improve a system response and user experience. The voltage regulation circuit (1) includes: a first power supply circuit (11), configured to receive a voltage setting signal (SSET), and output a first supply voltage (V1) and a second reference voltage (VREF2) according to the voltage setting signal (SSET) and a difference between a first feedback voltage (VF1) and a second feedback voltage (VF2), where the first feedback voltage (VF1) is used to indicate the first supply voltage (V1), and the second feedback voltage (VF2) is used to indicate a second supply voltage (V2); and a second power supply circuit (12), configured to output the second supply voltage (V2) based on the second reference voltage (VREF2).

This invention discloses a charge regulation circuit and related products. The charge regulation circuit is used to regulate the neutralization current during the stimulation and neutralization cycle of nerve tissue. The charge regulation circuit includes an accumulation charge storage module that stores the charge accumulated on the nerve tissue due to stimulation and neutralization, and generates a first voltage based on the accumulated charge. A first voltage acquisition module acquires the first voltage in real time during the neutralization process on the nerve tissue. A first control module outputs a first control signal in response to the first voltage meeting a first preset condition, and outputs a second control signal when the first voltage meets a second preset condition. The charge regulation module adjusts the parameters of the neutralization current on the nerve tissue according to the first or second control signal to make the charge amounts of the two oppositely polarized charges accumulated on the nerve tissue equal. This solution can achieve long-term charge balance.

The application discloses a current regulating circuit, a first control module is arranged between the gate of a first PMOS and the gate of a second PMOS, when receiving a first closing instruction, the first control module controls the gate of the second PMOS to be connected with the gate of the first PMOS, the second PMOS is turned on, the first PMOS and the second PMOS are connected in common-gate to form a current mirror and output current; when receiving a first opening instruction, the first control module controls the second PMOS to be turned off, and the second PMOS cannot output current. When the second PMOS is turned on, the current output by the drain of the second PMOS directly flows into the output end of the current regulating circuit, the second PMOS is prevented from being affected by the on-voltage drop, so that the second PMOS stably works in a saturation region, the working condition of the second PMOS as the current mirror is met, and the stability of the current regulating circuit is ensured.

A voltage regulator includes a pre-regulation circuit and a low drop-out voltage regulator. The pre-regulation circuit is configured to generate a first power supply voltage based on an input voltage. The low drop-out voltage regulator is configured to generate a second power supply voltage based on the first power supply voltage. Additionally, the low drop-out voltage regulator is configured to filter a low-frequency component of the first power supply voltage.

A first voltage regulation circuit is coupled to a second voltage regulation circuit. Control circuitry is coupled to the first voltage regulation circuit and the second voltage regulation circuit. The control circuitry determines that a signal criterion is met, and controls application of a voltage signal generated by the second voltage regulation circuit to stabilize a voltage signal generated by the first voltage regulation circuit.

Disclosed herein is a circuit for regulating current flow and power dissipation. The circuit includes a power transistor generating a load current, a sense transistor producing a scaled version of the load current, and a regulation circuit equalizing drain-to-source voltages of both transistors. A current comparison circuit generates a feedback current based on the difference between a reference current and the scaled load current. A feedback circuit adjusts the power transistor's control voltage based on this feedback current. When the scaled load current is below the reference current, the feedback circuit decreases the power transistor's on-resistance, reducing power dissipation. Conversely, when the scaled load current exceeds the reference current, the feedback circuit increases the power transistor's on-resistance, limiting current flow. This dynamic adjustment mechanism optimizes power efficiency and current regulation, making the circuit suitable for applications requiring precise current control and minimal power loss.

Disclosed are a control circuit and a circuit of multi-speed ceiling fan with light. The control circuit includes a unidirectional controllable circuit, a bidirectional controllable circuit, and a regulation circuit. The unidirectional controllable circuit is connected to a mechanical switch and a load. The regulation circuit is connected to the unidirectional controllable circuit and the bidirectional controllable circuit, and the bidirectional controllable circuit is also connected to the mechanical switch and the load. The unidirectional controllable circuit is configured to transmit the negative half-wave voltage of the AC power source of the mechanical switch to the load. The bidirectional controllable circuit is configured to transmit both the positive half-wave voltage and the negative half-wave voltage of the AC power source of the mechanical switch to the load.

A single-inductor multi-output DC-DC converter includes a regulation circuit that controls a switch to alternately charge at least two capacitors associated with at least two DC output voltages via a single inductor from a DC input port. The regulation circuit determines whether the DC-DC converter operates in continuous conduction mode (CCM) or discontinuous conduction mode (DCM). In CCM mode, the regulation circuit regulates the charging duty cycle of a first output voltage and generates an initial charging duty cycle for each of the other output voltages by scaling the first output voltage duty cycle. In DCM mode, the regulation circuit independently regulates the charging duty cycle of each output voltage and stores each duty cycle to be used for the next charging period of the same output voltage. The regulation circuit detects and handles undershoot and overshoot conditions to accelerate recovery at the output port.

This disclosure provides an adjustment circuit and an amplifier circuit for a stacked power amplifier. The stacked power amplifier includes multiple stacked transistors, with the output of one transistor connected to the input of the next transistor. The adjustment circuit includes: a voltage swing detection module connected to the output of each transistor, comprising a voltage detection unit and a difference unit, for detecting and comparing the voltage swing between the transistor input and output, and outputting multiple voltage swings; a limiting comparison module connected to the voltage swing detection module, for comparing a preset threshold voltage with the voltage swing of any one or more transistors, and outputting a comparison result; the limiting comparison module is connected to a control module, which outputs a control signal based on the comparison result; and an attenuator connected to the input of each transistor, for attenuating the voltage input to the transistor according to the control signal.

A bias circuit includes a control loop, configured to output a bias current to the input end of the RF power amplifier; a regulation circuit, configured to adjust loop bandwidth of the control loop based on Miller effect when it is determined that the bias current output by the control loop can meet a first condition, so that stability and noise suppression degree of the control loop can meet a second condition.

The present application provides a current comparison circuit, a control chip, and a master-slave system. The current comparison circuit comprises a voltage regulation circuit, a reference voltage circuit, and a comparison circuit. A current receiving terminal of the voltage regulation circuit receives a current to be measured, a floating ground terminal of the voltage regulation circuit generates a floating ground voltage, a voltage detection terminal of the voltage regulation circuit outputs a detected voltage related to the current to be measured, and the voltage regulation circuit is capable of regulating the floating ground voltage. The reference voltage circuit comprises at least two branches, and the comparison circuit comprises at least two comparators, wherein first input terminals of the two comparators are both connected to the voltage detection terminal, and second input terminals of the two comparators receive different reference voltages, thereby achieving two detected voltage measurements on the basis of transition results of the two comparators. In addition, a voltage domain of the voltage regulation circuit is arranged between a high-voltage power supply terminal and a low-voltage power supply terminal, and voltage domains of the reference voltage circuit and the comparison circuit are arranged between the high-voltage power supply terminal and the floating ground terminal, thereby enabling the comparators to operate in a low-voltage domain, and allowing for reduced chip area and increased comparison speed.

The driver has a current control loop for regulating the output current, which has a controllable configuration comprising an electrical value that influences the conversion function of the converter. A regulation circuit is provided to selectively deliver or not deliver the output current of the converter to the load and to efficiently regulate the load seen by the driver between a first level and a second level. In addition to the output current regulation implemented by the current control loop, this regulation enables for example the PWM control of the output current. Before the regulation circuit changes the load seen by the driver from the first level to the second level, the electrical value of the current control loop is saved; and when the regulation circuit changes the load seen by the driver from the second level back to the first level, the saved electrical value is reapplied to the current control loop. The response time of the current control loop is reduced when controlling the desired output current of the converter. The electrical value is the voltage of a capacitor in the compensation circuit of the error amplifier of the current control loop.

The present disclosure provides inducible constructs comprising transcription initiation and / or transcriptional regulatory elements. These constructs can be used to drive gene expression in response to specific cellular conditions (e.g., in the context of antigenic stimulation). In some embodiments, the constructs are incorporated as part of regulatory circuits useful for controlling the expression and regulation of cells expressing the engineered receptor.

The utility model discloses a safety switch circuit, which comprises a switch, a first port and a second port which are used for being connected with a positive electrode or a negative electrode of a power supply, a first driving circuit and a second driving circuit which are used for driving the switch, a first holding circuit and a second holding circuit which are used for enabling the switch to be in a self-holding state, and a time control adjusting circuit, the time control adjusting circuit controls the output of the safety switch circuit by limiting the time difference when the first port and the second port are sequentially connected to a power supply, and the first driving circuit, the second port, the time control adjusting circuit and the second holding circuit are connected with each other. The first driving circuit is connected with the time control adjusting circuit through the first port and the second driving circuit, and is also connected with the second driving circuit through the first holding circuit; the output of the circuit is safely set, the time difference of the first port and the second port connected to the power supply is limited, misoperation is avoided, and the safety is high.

Technologies related to low dropout regulation circuitry stabilization are described. A circuit includes an amplifier to supply a voltage based on a comparison of a feedback loop voltage and a reference voltage. A comparison circuit coupled to the amplifier dynamically adjusts an amount of current supplied to the amplifier based on a measured temperature.

The application discloses a voltage regulating circuit and device. The voltage regulating circuit comprises a rectification module, a signal generation module and an output control module. The input end of the rectification module is connected with the voltage output end of a generator, and the output end of the rectification module is connected with the first end of the excitation winding of the generator, for providing an excitation signal for the excitation winding of the generator, wherein the rectification module is a bridge rectification filter circuit. The signal generation module is connected with the voltage output end and the current output end of the generator respectively, for determining an initial control signal according to the sampling voltage and the sampling current. The output control module is connected with the signal generation module and the second end of the excitation winding of the generator respectively, for converting the initial control signal into a pulse width modulation signal and outputting the pulse width modulation signal to the second end of the excitation winding, so as to adjust the excitation voltage acting on both ends of the excitation winding. The technical scheme of the application can improve the control efficiency and effect of the starting voltage of the motor.

This disclosure provides a turn-off circuit, a drive circuit, an IGCT, an electrical device, and a turn-off method. The turn-off circuit is used for a gate-commutated thyristor, which includes a first lead, a second lead, and a control lead. The turn-off circuit includes a control device and a voltage regulation circuit. The control device is configured to output a control signal to the voltage regulation circuit. The voltage regulation circuit includes a control sub-circuit, a voltage-adjustable switching element, and a voltage source. A first terminal of the voltage-adjustable switching element is electrically connected to the control lead of the gate-commutated thyristor, a second terminal of the voltage-adjustable switching element is electrically connected to a first terminal of the voltage source, the control lead of the voltage-adjustable switching element is electrically connected to the control sub-circuit, and the second terminal of the voltage source is electrically connected to the first lead of the gate-commutated thyristor. The control sub-circuit is configured to control the voltage-adjustable switching element to be turned on or off, or to control the voltage-adjustable switching element to be clamped at a predetermined voltage, based on the control signal.

This disclosure provides a method and apparatus for testing an adjustment circuit. The method is applied to a test platform, and the adjustment circuit includes a duty cycle adjustment circuit. The method includes: receiving write data at a specified storage address according to a first read / write clock signal; receiving read data from the specified storage address according to a second read / write clock signal; and generating a test result for the duty cycle adjustment circuit based on the written and read data. The duty cycle adjustment circuit is used to adjust the first initial read / write clock signal and / or the second initial read / write clock signal, correspondingly generating the first and second read / write clock signals. The duty cycle of the first and / or second initial read / write clock signals has a first deviation value. This disclosure can accurately detect whether the duty cycle adjustment circuit is in an effective state.

The application concerns a phase detector (DF) for a random generator and a method for regulating the operation of the phase detector, constructed from a flip-flop (P), whose inputs and output (D, C, Q) constitute the inputs and output of the phase detector (i1-DF, i2-DF, o-DF). The essence of the phase detector is a special flip-flop design with balancing elements in both the master and slave stages and a series of inputs (lo1M, lo2M, lo1S, lo2S) enabling control of the flip-flop's operation, which is controlled by a compensation and regulation circuit (UKR), also connected to the flip-flop's inputs and output (D, C, Q).

The application discloses a wide voltage flexibility adjusting circuit based on two-stage timing monitoring and error correction, and belongs to the technical field of basic electronic circuits. The timing error and path activation monitoring unit of the application not only monitors timing error information of a circuit stage, but also monitors key path activation of a system stage; an in-place error correction flip-flop for real-time error correction is designed; a self-adaptive stretching amount detection module is combined so that a chip can completely acquire timing conditions of a key path under a current state, an adjusting strategy with the least influence on system performance is selected under the premise of ensuring correct timing, the purpose of suppressing PVTA deviation in a wide voltage range is achieved, and timing margin reserved in traditional design is completely eliminated, and power consumption is sufficiently reduced.

The application provides a colloidal molecule system based on DNA circuit coding assembly and a preparation method thereof. The application develops DNA circuit coding CMs with high precision and time dependence by using ssDNA with alternating polyA domains and functional domains and dynamic DNA circuit catalytic hairpin self-assembly (CHA) to code and assemble AuNPs, and the DNA circuit coding CMs can be used for adjusting peroxidase-like activity of AuNPs. The application can obtain DNA circuit coding CMs with dimeric, linear or reticular structures by changing the number and length of the polyA domains and the functional domains. The application can accurately adjust the peroxidase-like catalytic activity of the DNA circuit coding CMs system by blocking the catalytic active sites on the surface of the AuNPs or simply changing the concentration of the external DNA stimulant. The application provides a new idea for regulating the catalytic function of nanomaterials.

The present invention relates to the technical field of electric current regulation. Provided are a driving current regulation method and regulation circuit, and a driving apparatus and an electronic device. By means of applying a target back-bias voltage to a substrate electrode of a short-channel FDSOI transistor, the resistance value of a series resistor of the short-channel FDSOI transistor is regulated, so as to finally achieve the aim of regulating a driving current when a driving voltage is applied to the short-channel FDSOI transistor. Therefore, in the technical solution provided by the present invention, the resistance value of a series resistor of an FDSOI transistor can be regulated without the need for changing the structure, material and preparation process of the FDSOI transistor, thereby finally achieving the aim of driving current regulation.

The application discloses a low-dropout voltage regulating circuit, comprising a unit gain buffer, a flip voltage follower and a floating source follower connected in sequence, and the floating source follower is also connected with the unit gain buffer; the floating source follower is used for providing a reference voltage for the flip voltage follower, the reference voltage is different from an output voltage by a preset threshold, so as to realize the isolation of a power supply voltage and the flip voltage follower; the unit gain buffer is used for obtaining an intermediate voltage through gain buffering based on a reference voltage; the flip voltage follower is used for adjusting the intermediate voltage based on the reference voltage to obtain the output voltage, and the output voltage is equal to the reference voltage. The application can achieve wide input range of the input power supply voltage by adaptively adding a floating source follower at the source end of the power adjusting tube, and the added floating source follower has no influence on the stability of the low-dropout voltage regulating circuit.

The present application relates to a DC-DC converter, where regulation and clamping functions are separated at a controller integrated circuit (IC) for a DC-DC converter. The controller IC includes a clamp circuit configured to clamp the voltage at a pin of the controller IC that is connected to external compensation circuitry. The controller IC further includes a different regulation circuit configured to regulate a clamp loop of the controller IC.

A gamma voltage regulation circuit set in a driver chip of a display panel, includes: an input circuit configured to determine a measured value of a power supply voltage of a power supply; a computing circuit configured to compute a variation value between the measured value and a reference value of the power supply voltage, an adjustment circuit configured to adjust a dynamic value of a reference voltage of a grayscale voltage generated by gamma correction through the variation value; and a third output circuit configured to output the grayscale voltage based on the dynamic value.

The application discloses a regulating circuit and a power adapter. The regulating circuit comprises a conversion circuit, a feedback circuit, a switch and a level enabling circuit. The conversion circuit is connected between an input end and an output end of the regulating circuit, and is used for converting a direct-current input signal at the input end into a direct-current output signal. The conversion circuit has a control end. The feedback circuit is connected between the output end of the regulating circuit and the control end of the conversion circuit, and the feedback circuit has an enabling end. The level enabling circuit is connected between the output end of the regulating circuit and the enabling end of the feedback circuit. The switch is connected in series in a branch where the level enabling circuit is located. The regulating circuit in the application can provide two different voltage outputs in two different states of the switch, and the versatility of the power adapter provided with the regulating circuit can be improved.

The provided is a voltage control and regulation circuit of voltage droops with low cost and fast response. The circuit includes: a voltage monitoring unit, a current prediction unit, a voltage loop controller, a current loop controller, a clock gating circuit, and a performance-aware voltage controller. The circuit regulates voltage in real time through a full closed-loop, dual-loop architecture, thereby greatly reducing the performance cost during the regulation. The voltage loop controller and the current loop controller are used in combination, and the frequency adjustment amounts corresponding to the voltage and the current are determined by fitting with different control parameters, thereby implementing a flexible dual-closed-loop control strategy. The frequency adjustment amounts are handled by using a clock gating circuit. The operating frequency of a controlled object is quickly controlled by means of clock enabling.