61 results about "Regulatory circuit" patented technology

The exposure of cells, tissues and organs to “stress,” such as elevated temperature, stimulates production of active heat stress transcription factors (HSF), which in turn, induce expression of genes regulated by stress promoters. Normally, the activity of stress promoters declines after cells, tissues and organs are returned to a normal condition. The present invention relates to molecular circuits that provide for sustained expression of a gene of interest subsequent to a single application of stress. Generally, the molecular circuits of the invention comprise (a) a first nucleic acid molecule that comprises a gene encoding a transcription factor and a first promoter or a combination promoter activatable by stress and by the transcription factor, wherein the first promoter or the combination promoter and the transcription factor gene are operably linked, and (b) a second nucleic acid molecule that comprises a gene of interest and a second promoter activatable by the transcription factor, wherein the second promoter and the gene of interest are operably linked.

The technical scheme of the invention provides a charging circuit, a terminal and a charging system. The charging circuit is connected with a charger, a terminal load and a battery and is characterized by comprising a first regulation circuit, a current detection circuit, a voltage detection circuit and a control circuit, wherein a first end of the first regulation circuit is connected with the charger, a second end of the first regulation circuit is also connected with the terminal load, a third end of the first regulation circuit is connected with the control circuit, a second of the current detection circuit is connected with a positive electrode of the battery, a negative electrode of the battery is connected with the charger, and the current detection circuit is connected in series between the negative electrode of the battery and the charger. In the charging circuit provided by the invention, a charging circuit can be adjusted when the charging current abruptly changes so as to prevent damage of an excessive large charging current to the charging circuit and the battery.

The invention discloses a power factor correction circuit, a control method and a controller. The conduction time of a main switch tube of a switch type regulation circuit is adjusted according to measured total harmonic distortion, and the total harmonic distortion is minimized while power factor correction is carried out, so that special compensation design does not need to be performed aiming at a certain type of factors influencing total harmonic distortion indexes independently, and the overall control method is simplified.

A voltage regulating circuit and a method thereof are provided. The voltage regulating circuit includes: a tank circuit, an error amplifier, an output circuit, and a feedback circuit. The tank circuit provides a fixed voltage. The error amplifier generates an amplified voltage according to a reference voltage and a feedback voltage. The output circuit converts a supply voltage into an output voltage in response to at least one of the amplified voltage and the fixed voltage. The feedback circuit generates a feedback voltage according to the output voltage.

A voltage regulation circuit includes: a first voltage divider that divides a regulation voltage with a predetermined division ratio to generate a division voltage; a first current driving force control unit configured to compare a reference voltage with the division voltage and generate a first control signal; a current driving unit configured to generate a driving current with a variable driving force based on the first control signal and a second control signal, and generate the regulation voltage; and a second current driving force control unit configured to generate the second control signal in accordance with a level variation of the regulation voltage.

A circuit for using a high voltage gate driver IC (HVIC) for regulation of external floating voltage sources without use of regulation circuits. The circuit including high and low switches; at least one external voltage source coupled to the high and low switches; an HVIC having at least one internal charge pumping voltage source circuit, the HVIC being coupled to gate terminals of the high and low switches; and at least one charge pumping capacitor coupled to the at least one internal charge pumping voltage source circuit for regulating the external voltage of at least one external voltage source.

A phase comparison process in a timing recovery process for high-speed data communication defines a data window and compares the phase of a clock in the window with the phase of an edge of data so as to realize a parallel process, wherein the phase comparison and the process of determining whether a data edge lies within the window are performed in parallel to each other, and the phase comparison result is output only if the data edge lies within the window. With this configuration, it is possible to perform an accurate phase comparison process with no errors without requiring high-precision delay circuits.

The invention discloses a regulation circuit and a regulation method for a light-emitting diode. The regulation circuit is provided with a variable voltage unit for acquiring direct current power andproviding constant current to drive at least one light-emitting diode, and a pulse modulation unit for generating a driving signal to control the variable voltage unit. The driving signal of the pulsemodulation unit has an operation cycle, the driving signal under the operation cycle drives the variable voltage unit to output normal operation power, while the pulse modulation unit is connected with a time sequence regulation unit which generates a regulation signal to be sent to the pulse modulation unit to modulate a dormancy cycle added into the operation cycle of the driving signal, and the driving signal under the dormancy cycle reduces the power through which the variable voltage unit drives the light-emitting diode. Therefore, the variable voltage unit regulates the power output tothe light-emitting diode according to the alternate control of the operation cycle and the dormancy cycle of the driving signal to avoid the light-emitting diode emitting heat continuously so as to reduce the accumulation of heat energy.

A timepiece includes a mechanical movement with a mechanical oscillator and an electronic device for regulating the medium frequency of this mechanical oscillator. It includes an electromagnetic transducer and an electric converter which includes a primary storage unit for powering the regulation circuit. The electromagnetic transducer is arranged to supply a voltage signal exhibiting first voltage lobes in first half-alternations and second voltage lobes in second half-alternations of the oscillations of the mechanical oscillator. The regulating device includes a load pump arranged to transfer electric loads from the primary storage unit into a secondary storage unit, these electric loads being extracted selectively in different time zones according to a time drift detected in the functioning of the mechanical oscillator relative to an auxiliary oscillator, particularly quartz-based.

The invention discloses an efficient and energy-saving electromagnetic control circuit, and belongs to the technical field of contactors. The electromagnetic control circuit comprises a full-bridge driving chip U1 used for controlling the function of a contactor, an energy storage circuit connected with a power supply, a voltage stabilizing circuit which is connected with the energy storage circuit and is used for stabilizing an input voltage and then sending the input voltage to the full-bridge driving chip U1, a voltage signal detecting and adjusting circuit which is connected with the power supply and is used for detecting and adjusting an input voltage signal and carrying out filtering overvoltage protection, a three-stage inverter connected with the voltage signal detection and regulation circuit, a pull-in delay regulation circuit used for controlling output of pull-in voltage to enable a coil of a contactor KM to be powered on in the forward direction and then to be turned off in a delayed mode, and a release delay regulation circuit used for controlling output of release voltage to enable the coil of the contactor KM to be powered on in the reverse direction and then to be turned off in a delayed mode. According to the efficient and energy-saving contactor control circuit, the energy-saving effect is obvious, and the energy-saving effect can reach 98% or above; and single-line inching control opening and closing is realized.

The invention discloses an inductive current AC component reconstruction circuit, a control circuit and a switch circuit. The inductive current AC component reconstruction circuit comprises an integral circuit and a biasing regulation circuit, wherein a first input end of the integral circuit is used for receiving a signal expressing a switch node voltage, the integral circuit is used for performing integration on difference between a voltage of the first input end and a biasing voltage, an output voltage of the integral circuit contains information expressing an inductive current AC component, and the biasing regulation circuit is used for adjusting DC biasing of the output voltage of the integral circuit to a first voltage. By reconstructing the inductive current AC component, the outputis controlled, the circuit is good in transient response, an inductive current is not needed to be sampled, the influence of the switch process on the control circuit is prevented, and the control circuit is simpler.

The exposure of cells, tissues and organs to “stress,” such as elevated temperature, stimulates production of active heat stress transcription factors (HSF), which in turn, induce expression of genes regulated by stress promoters. Normally, the activity of stress promoters declines after cells, tissues and organs are returned to a normal condition. Mutant forms of HSF, however, can constitutively transactivate stress genes, in the absence of stress. By taking advantage of such mutant HSF, molecular circuits can be devised to provide a sustained expression of a gene of interest using a single application of stress. One form of molecular circuit comprises (a) a first nucleic acid molecule that comprises a gene encoding a transcription factor and a promoter activatable by stress and by the transcription factor, wherein the stress-activatable promoter and the transcription factor gene are operably linked, and (b) a second nucleic acid molecule that comprises a gene of interest and a second promoter activatable by the transcription factor, wherein the second promoter and the gene of interest are operably linked.

An exemplary embodiment of the present disclosure provides a programming voltage generator for a nonvolatile memory device. The programming voltage generator comprises a power circuit, a detector, a switching circuit, a control signal generator, and a regulation circuit. The power circuit outputs a programming voltage according to a voltage control signal. The detector detects whether the programming voltage is larger than or equal to a breakdown voltage of the nonvolatile memory device, so as to output an indication signal. The switching circuit temporally drops the programming voltage according to the indication signal. The control signal generator generates a plurality of regulation control signals. The regulation circuit generates the voltage control signal according to the programming signal and the regulation control signals.

An artificial intelligence (AI) intelligent automatic control system used for an air detoxification machine belongs to the purifier technology field. A humidity sensor adopts a chip sht20 and is installed on an air detoxification machine pedestal. A detected humidity signal is transmitted to a main control chip STM32F103CBT6. The main control chip transmits the signal to a subsequent forward regulation circuit and / or a negative regulation circuit composed of TS3A5017 and TL494, a duty ratio is adjusted and a needed stable voltage is acquired. According to the different humidity, an appropriatehigh voltage is acquired. The negative oxygen ions of the air detoxification machine can be transmitted far, and a high adsorption capacity is achieved, and electrical noise and electrical safety problems are not generated. In the invention, an artificial intelligence (AI) technology is applied, intelligent automatic control (without manual intervention) is realized, the system is good for the stability and the reliability of an air detoxification machine equipment function, the usage comfortableness and the electrical safety of equipment, and the universality of a usage environment are increased, and the system is good for the usage frequency of the air detoxification machine, and market competitiveness is increased.

The invention provides a temperature integrated regulation and control device and a temperature integrated regulation and control method. The temperature integrated regulation and control device comprises a temperature point regulation circuit module and a temperature point regulation gear module, the temperature point regulation circuit module comprises resistors corresponding to different temperature measuring points of different to-be-measured objects and peripheral circuits of the resistors; the temperature point regulation gear module comprises a plurality of different gears; for the temperature measurement points corresponding to different temperatures of different to-be-measured objects, when a corresponding gear in the temperature point regulation gear module is selected, the corresponding resistor and the peripheral circuit thereof in the temperature point regulation circuit module are used, so that the temperature integrated regulation and control device provides test circuits corresponding to different temperature measuring points of different to-be-measured objects through the same circuit. The problems that according to an existing mainboard testing method, time and labor are wasted in the debugging process, and errors are prone to occurring are solved, the testing temperature points can be fixed and adjusted according to preset requirements, debugging errors can be prevented, and the debugging testing effect can be conveniently and rapidly conducted.

This invention provides a current self-checking regulation circuit based on voltage calibration including a bandgap reference unit, a self-calibration unit, a detection and regulation unit, current mirror units, and a current mirror control unit. The bandgap reference unit is configured to generate a voltage signal, the self-calibration unit is configured to respond to a digital signal of the detection and regulation unit and calibrate the voltage signal of the bandgap reference unit. The detection and regulation unit samples the reference current signal and a mirror current signal of the regulation group current mirror unit and generate a digital control signal according to the reference current signal. and the reference group current mirror unit responds to the digital control signal and outputs a regulated bias current signal meeting needs of the laser driver.

A method of directed evolution screening includes selecting a protein expression platform for an evolution target, expressing a key rupture gene configured to trigger droplet rupture, developing gene regulatory circuits to control expression of the key rupture gene as a function of performance of the evolution target, encapsulating expression components in droplets, and triggering droplet rupture by expressing a rupture agent from the key rupture gene.

The invention provides a high-voltage power supply method. A high-voltage conversion module receives an inputted high-voltage voltage, outputs a low-voltage voltage, and transmits the low-voltage voltage to a self-starting voltage division circuit and a multi-path noise isolation output circuit; the self-starting voltage division circuit receives the low-voltage voltage, outputs a feedback voltageto a voltage regulation circuit and outputs a control voltage; the voltage regulating circuit receives a reference voltage and the feedback voltage and outputs the voltage to compensate the control voltage, so that the control voltage tends to be stable; and the multi-path noise isolation output circuit receives the low-voltage voltage and the control voltage and outputs a multi-path noise isolated power supply voltage to provide power for an external switching tube. Therefore, the reliability and expansibility are improved.

The invention discloses a room temperature terahertz focal plane array bias voltage adjustment circuit and its application method. An amplification circuit, a second second-order low-pass filter circuit, and a room-temperature terahertz focal plane array, and the PC end is connected to the ASIC chip through a USB serial port line. Input the bias voltage command in the PC-side software, under the control of the ASIC chip, calculate the decimal value of the corresponding bias voltage command into the corresponding binary value, and convert the input binary digital signal into a bias voltage command through the D / A converter Analog signal, the bias command analog signal is output to the first second-order low-pass filter circuit for filtering, then enters the non-inverting operational amplifier for amplification processing, and then is filtered and noise-reduced by the second second-order low-pass filter, and then input to the room temperature terahertz coke planar array. The scheme provides an adjustable bias voltage design method, and the bias voltage design circuit has high precision and low noise.

The invention discloses a voltage regulation circuit, a voltage regulation method and a display device. The voltage regulation circuit comprises an impedance circuit, a control unit and a power supply circuit. The impedance circuit has a first node and a second node. The second node is electrically connected to the load. The control unit is electrically connected to the first node and is used for controlling a first voltage value of the first node according to the control signal. The input end of the power supply circuit is electrically connected to the second node, and the output end of the power supply circuit is electrically connected to the load. The power supply circuit outputs a supply voltage to the load according to a second voltage value of the second node. Therefore, the voltage regulating circuit can provide different voltage values according to the requirements of the load.

The invention discloses an overvoltage protection circuit and a load voltage regulation circuit. The overvoltage protection circuit comprises a voltage division sampling circuit and a comparison circuit, wherein both ends of the voltage division sampling circuit are respectively connected with both ends of a load, and the sampling output end of the voltage division sampling circuit is used for outputting sampling voltage signals which are used for expressing voltage values at the two ends of the load; a first input end of the comparison circuit is used for receiving the sampling voltage signals, a second input end of the comparison circuit is used for receiving a reference signal, and the reference signal is high-end voltage or low-end voltage of the load; the sampling voltage signals are compared with the reference signal in the comparison circuit; when overvoltage occurs, the output end of the comparison circuit is used for converting high and low levels. The overvoltage protection circuit has the advantages that by using an operation amplifier as the comparison circuit, the load voltage can be regulated to maintain the constant voltage of the load; the overvoltage protection circuit is suitable for multiple topology structures, the compatibility is good, and the complicated peripheral circuit is not needed.

The invention relates to a low-loss regulator circuit for driving the PWM; the invention comprises an LC oscillatory circuit consisting of a driving circuit, a capacitance C and a inductance L which are connected in series, a switch tube T1, a switch tube T2, a capacitance C1, a capacitance C2, an MCU controller and a current sampling magnetic ring; the MCU controller regulates the opening and closing sequence according to the working frequency and the switch tube can reduce the current loss in the opening and closing process. The invention overcomes the defect that the switch tube of the present electronic ballast is great and the temperature rises greatly. The invention changes the state that the working frequency of the present electronic ballast is basically unchanged from the beginning to the end; with the invention, the opening and closing sequence and working frequency are changing in the process of the different operational stages according to the light features.

The invention discloses a current protection circuit, which is applied to a totem-pole PFC circuit, and comprises a sampling circuit connected to a switching tube of the totem-pole PFC circuit so as to collect the working current of the switching tube; the comparison circuit is connected with the sampling circuit and is used for comparing the working voltage corresponding to the working current with the threshold voltage; the first feedback regulation circuit is connected between the comparison circuit and a control chip of the totem pole PFC circuit so as to output a protection report signal to the control chip when the working voltage is greater than the threshold voltage, so that the control chip is triggered to be interrupted; and the second feedback regulation circuit is connected with the comparison circuit to pull down a driving signal of a switching tube of the totem pole PFC circuit when the working voltage is greater than the threshold voltage so as to close the switching tube. The current protection circuit provided by the invention not only can realize rapid turn-off of a driving signal during overcurrent, but also can realize a function of reporting a protection state. The invention also discloses a totem pole PFC circuit.

The disclosure discloses a reading reference current automatic regulation circuit of a non-volatile memory. A reading check control module initiates a reading operation, a row reading operation is performed by controlling the memory to switch gate voltage of memory cells to bias gate voltage row by row, a comparison result between a memory cell readout value and an expected value is received, the reading check control module determines whether a reading check is passed according to the comparison result, a reading reference current control module adjusts the digital regulation signal according to whether the reading check is passed, and thus the magnitude of the reading reference current is adjusted through the digital-to-analog conversion module. The disclosure can adaptively regulate the internal reading reference current according to the process threshold voltage deviation in the test and meet the requirements on the function and reliability of the non-volatile memory.

Embodiments of the present disclosure relate to circuits and methods for detecting line shorts and / or line interruptions in a differentially operated line network. The present disclosure relates to a circuit (100) for detecting line short circuits and / or line interruptions in a differential operating line network (104-p, 104-n), comprising at least one adjustment circuit (110) which is designed to adjust at least one common mode signal of the differential operating line network (104-p, 104-n) to a predetermined common mode semaphore, when at least one control or regulation variable (112) of the regulation circuit (110) exceeds a predefined threshold value, a line short circuit and / or a line interruption in the differential operation line network is indicated.

The invention discloses a short-circuit protection method and device for a voltage regulation circuit, comprising: using an input voltage state confirmation circuit to generate and output an input voltage state signal for indicating the input voltage state; using an output voltage state confirmation circuit to generate and output an input voltage state signal for an output voltage state signal indicating the state of the output voltage; in response to the input voltage state signal indicating that the input voltage is normal and the output voltage state signal indicating that the output voltage is abnormal, the operation signal control circuit is used to control the voltage regulation circuit to stop working. The technical scheme of the present invention can perform short-circuit protection on different voltage regulating circuits or different types of voltage regulating circuits in a targeted manner, improve response speed and reliability, and reduce equipment complexity.

The application discloses an analog signal acquisition circuit, comprising: an amplifying circuit for receiving and amplifying the analog signal; an AD converter connected to the output end of the amplifying circuit; a controller connected to the output end of the AD converter , for judging whether the ratio of the size change range of the digital signal to the total range of the AD converter is lower than the preset ratio, if so, then determine the update value of the amplification ratio of the amplification circuit whose ratio is not lower than the preset ratio, and determine the amplification The parameter update value of the components in the circuit sends a corresponding adjustment signal to the adjustment circuit; the adjustment circuit connected to the output terminal of the controller is used to adjust the parameters of the components in the amplification circuit so that the amplification ratio becomes the amplification ratio update value . The application effectively improves the signal-to-noise ratio of the infrared signal. The present application also discloses a method, device and computer-readable storage medium for collecting analog signals, which also have the above beneficial effects.

Embodiments of the present application provide a voltage detection circuit and electronic equipment. The voltage detection circuit only includes a first voltage regulation circuit, a second voltage regulation circuit, a subtractor, a comparator, and a controller, wherein the first voltage regulation circuit is connected in series to The voltage source to be measured is connected to the first end of the comparator; the second voltage regulation circuit is connected in series to the voltage source to be measured and the first input end of the subtractor; the second input end of the subtractor is connected to the voltage source to be measured, and the subtraction The output terminal of the comparator is connected with the second terminal of the comparator; when detecting the voltage of the voltage source to be measured, the controller first adjusts the output voltage of the second voltage regulating circuit to the first voltage, and then continuously adjusts the output voltage of the first voltage regulating circuit output voltage until the output level of the comparator is switched, and then the voltage value of the voltage source to be tested can be determined according to the output voltage of the first voltage regulating circuit before and after the switching of the output level of the comparator and the above-mentioned first voltage range at a lower cost.