768 results about "Silicon-controlled rectifier" patented technology

The invention discloses an automatic identification and expansion communication method based on an RS485 interface, and relates to the technical field of industrial automation communication. The problems that an existing RS485 interface is complex in configuration, poor in protocol compatibility and high in data transmission delay are solved. According to the scheme, the terminal matched resistance and the bias current are adjusted in real time by dynamically measuring the bus equivalent distributed capacitance value, and signal attenuation caused by the capacitance effect is inhibited; a silicon controlled rectifier trigger type charge discharge mechanism is adopted to force bus residual charge to return to zero quickly, and an idle state is accurately judged in combination with a hysteresis comparator; dynamically compensating signal edge distortion and calibrating a sampling window time sequence based on a pre-emphasis filtering and Kalman filtering algorithm; multi-node stable communication is realized through capacitance value driven conflict detection threshold adaptive adjustment and a Poisson back-off model; according to the invention, the real-time performance, the anti-interference capability and the multi-node expansion reliability of RS485 communication in a complex industrial scene are obviously improved, and the debugging and maintenance cost of the system is reduced at the same time.

The invention relates to a simple and reliable touch control switch. The simple and reliable touch control switch consists of a 12-V direct-current power supply, a one-way silicon controlled rectifier 1 (SCR1) trigger circuit, a one-way silicon controlled rectifier 2 (SCR2) trigger circuit, a relay control circuit and a load RL circuit. A conventional mechanical self-locking rocker switch or a toggle switch has the defects that actions are mechanical, operating actions are different because of persons, a contact is easy to jitter, a contact is easy to ablate, abrade and the like. The touch control switch is realized by only using a small number of common components and two touch metal pieces, namely an on-load circuit is switched on by touching a touch electrode once, and an off-load circuit is switched off by touching the touch electrode once. The overall touch control switch is made of discrete components, and strong electricity can be effectively isolated from weak electricity through a relay, so that the power supply of a load can use alternating current and also can use direct current. Therefore, the touch control switch has a certain function in the field of household appliances, industrial automation, and optical, mechanical and electrical integration.

The invention discloses an intelligent silicon controlled rectifier voltage conversion circuit, which relates to the technical field of voltage conversion, and comprises a photovoltaic module, a micro-control module, a power regulation module, a first voltage threshold, a second voltage threshold, a second voltage threshold, a third voltage threshold, a fourth voltage threshold, a fifth voltage threshold and a sixth voltage threshold, when the converted electric energy is larger than a first voltage threshold value, the access control module transmits the electric energy output by power regulation, superposes the electric energy output by double-path electric energy coupling and stores the superposed electric energy by the energy storage module, and when the converted electric energy is smaller than the first voltage threshold value and larger than a second voltage threshold value, the access control module outputs the superposed electric energy. And when the voltage is smaller than a second voltage threshold value, electric energy coupling is stopped, the power regulation module is controlled to carry out power regulation on the electric energy released by the energy storage module, and power is supplied to the output module. According to the intelligent silicon controlled voltage conversion circuit, the utilization rate of photovoltaic electric energy can be improved, and the voltage gain and the power supply efficiency are improved.

The invention relates to the technical field of self-adaptive starting, and discloses a self-adaptive starting method and system based on voltage and current monitoring, and the method comprises the steps that an MCU (Microprogrammed Control Unit) triggers an auxiliary silicon controlled rectifier and a main silicon controlled rectifier through preset starting logic to start a motor, and carries out the high-frequency sampling of current and voltage data in real time; once starting failure is detected, short-time voltage sequences and short-time current sequences before and after a failure occurrence point can be automatically captured and stored. Then, key features are extracted from the sequences, and failure causes are determined through decision tree model analysis. And based on the analysis result and the current retry times, the MCU outputs a corresponding retry strategy to ensure that the motor can be successfully started or enter a safety mode. Thus, the reliability of motor starting is improved, subsequent fault diagnosis is supported through detailed data recording, and the maintainability and safety of the system are greatly improved.

The invention discloses a magnetofluid type silicon controlled rectifier radiator and a heat dissipation control method thereof. The radiator comprises a silicon controlled rectifier, a magnetic fluid chamber is attached to the outer side of the silicon controlled rectifier, the magnetic pole array is installed in the magnetic fluid chamber, and cooling fins are assembled outside the magnetic fluid chamber. When alternating current is introduced into the cavity where the magnetic fluid liquid chamber is located, the alternating current and the magnetic field interact to generate Lorentz force, the Lorentz force drives the magnetic fluid to form directional eddy current so as to achieve convective heat exchange on the silicon controlled rectifier, and heat absorbed by the magnetic fluid and air are subjected to heat exchange through the cooling fins. Junction temperature out-of-control caused by local hot spots of the silicon controlled rectifier can be solved, secondary damage of mechanical vibration of a heat dissipation system to welding spots is eliminated, and the highest junction temperature area of the silicon controlled rectifier is focused and cooled according to needs.

Disclosed in the present invention is a ground fault device end-of-life self-test system. An induction coil and a neutral coil are used for sensing and acquiring a ground fault leakage current signal of a live wire or a neutral wire. A trip device is used for cutting off the power supply to a load in the event of a ground fault by driving a solenoid by means of a thyristor which is triggered by an IC1 to turn on. A manual test button is used for manually testing the function of a ground fault device. A rectifying circuit is used for rectifying an alternating current (AC) and outputting same to a direct current, and providing the direct current to IC1 and IC2 direct current power supplies. A ground fault detection circuit is used for completing ground fault detection, and controlling the drive to trigger the thyristor to turn on or off. A ground fault self-test control circuit is used for controlling the testing of a ground fault detection function without affecting normal ground fault detection and protection functions.

The invention provides a simulation method and system with controllable split-phase voltage drop time difference, and relates to the technical field of electric power testing, and the method comprises the steps: adjusting voltage through a three-phase voltage regulator, employing a bidirectional silicon controlled rectifier and IGBT hybrid switch structure to achieve voltage drop, collecting and processing a three-phase voltage signal through a digital signal processor, and extracting zero crossing point information; and a control pulse signal with phase compensation is generated, the conduction time sequence of the switch element is controlled to realize soft switching, and the industrial computer receives and processes the signal and displays a voltage drop waveform. The split-phase voltage drop time difference can be accurately controlled, and the simulation precision and the system reliability are improved.

The invention discloses a high-voltage bidirectional silicon controlled rectifier electrostatic protection device and a manufacturing method. The high-voltage bidirectional silicon controlled rectifier electrostatic protection device comprises a P-type substrate, a P-type well and a high-voltage N well, the emitter P + injection of a parasitic PNP triode and the emitter N + injection of a parasitic NPN triode in the P-type well are arranged alternately, so that the length of a transverse discharge path of the silicon controlled rectifier is reduced to the greatest extent, the square resistance of a PNPN positive feedback conduction path is greatly reduced, and the key problem that a symmetrical bidirectional silicon controlled rectifier structure cannot be effectively opened in a high-voltage window of more than 70V is solved; in addition, the layout can provide an additional parasitic NPN triode path for a silicon controlled rectifier path, the effective area of an emitter of the parasitic NPN triode and the proportion of the emitter in a silicon controlled rectifier loop are increased, and the current discharge capacity of the device is further improved. Therefore, reference can be provided for the structural design of the high-voltage symmetrical bidirectional silicon controlled rectifier electrostatic protection device, and the silicon controlled rectifier can be effectively applied to ESD protection of a high-voltage bidirectional port.

The invention discloses a low-voltage line intelligent voltage regulation voltage stabilizer control system, and relates to the technical field of voltage stabilizer control, an intelligent control unit judges whether the current line voltage needs voltage regulation control based on a control algorithm, if yes, a corresponding voltage regulation control instruction is generated, a silicon controlled rectifier switching module executes non-contact on and off operation, and the voltage regulation control is completed. The voltage regulation compensation module is used for carrying out voltage compensation on the basis of the output of the voltage transformation module, so that the output voltage is controlled within a preset range, and when the power grid voltage is detected to be recovered and stable within a set time, and when the power grid voltage is detected to be abnormal, the voltage regulation compensation module is used for carrying out voltage compensation on the basis of the output of the voltage transformation module. And the intelligent control unit is automatically switched into a bypass for operation. According to the control system, a voltage stabilization control framework with high response speed, three-phase independent adjustment capability, an intelligent dormancy mechanism and a complete fault protection system is constructed, and the intelligent level and the operation performance of the low-voltage power distribution system are remarkably improved.

The invention provides a silicon controlled rectifier dimming circuit zero crossing point detection method and system based on deep learning, and relates to the technical field of circuit zero crossing point detection. The method comprises the steps that firstly, working condition information and voltage and current signals of a circuit are obtained, time and phase information of an initial zero crossing point are recognized through a pre-trained deep learning model (a circuit zero crossing point detection model), and training data of the model comprise a large number of working conditions and voltage and current samples with labels; after the silicon controlled rectifier circuit starts to work, the system detects the stroboscopic condition, and compares the actual stroboscopic value with the standard value to obtain the deviation degree. And finally, based on the initial zero crossing point information and the stroboscopic deviation value, calculating final zero crossing point information for adjusting and optimizing the working state of the circuit. The double verification mechanism obviously improves the accuracy and reliability of zero crossing point detection, so that the conduction opportunity of the silicon controlled rectifier is more accurate, a more stable dimming effect is realized, and the influence of a stroboflash phenomenon on the illumination quality is reduced.

The invention is applicable to the technical field of automation control, and provides a voltage simulation test system and method of an electromagnetic valve and terminal equipment, the system comprises a parallel interface circuit and a voltage simulation device, and a bidirectional silicon controlled rectifier in the parallel interface circuit is connected in parallel to two ends of a coil of the electromagnetic valve and is used for adjusting an analog voltage value output by the voltage simulation device. The voltage simulation device comprises a power supply adaptive circuit and a control chip; the input end of the power supply self-adaptive circuit is connected with the control chip, the output end of the power supply self-adaptive circuit is connected with the parallel interface circuit, a power supply mode is determined according to the field power supply state of the field circuit where the electromagnetic valve is located, and the power supply mode is sent to the control chip; and the control chip generates a pulse width modulation driving signal according to the power supply mode, and controls the parallel interface circuit according to the pulse width modulation driving signal to perform voltage simulation test on the electromagnetic valve. The system can safely and accurately carry out the voltage simulation test on the premise of not cutting off the original field circuit where the electromagnetic valve is located.

The invention provides a low-trigger and high-maintenance silicon controlled rectifier and a manufacturing method thereof. A first N + injection region and a first P + injection region are arranged in a first N well, a third N + injection region and a second P + injection region are arranged in a first P well, and the second N + injection region is arranged between the first N well and the first P well; three electrodes corresponding to the first N + injection region, the first P + injection region and the second N + injection region are connected together to form a silicon controlled rectifier anode, and two electrodes corresponding to the third N + injection region and the second P + injection region are connected together to form a silicon controlled rectifier cathode; the first grid electrode is arranged on the surface of the first P well and connected with the cathode of the silicon controlled rectifier through an external resistor. And the external resistor, the second N + injection region and the side capacitor of the grid form an RC path, so that the effects of reducing the trigger voltage and improving the maintaining voltage are achieved.

Disclosed in the present invention is a grounding fault detection apparatus having a self-checking function. The grounding fault detection apparatus comprises: an induction coil, a neutral coil, a trip unit, a manual test unit, a rectifier circuit unit, a power supply management unit, a grounding fault detection unit and a grounding fault self-checking test unit. The grounding fault detection unit receives grounding fault leakage current signals acquired by means of the induction coil and the neutral coil, then processes, amplifies, filters, converts, performs determination, etc. on effective leakage current signals, and performs control to generate silicon-controlled rectifier / trip unit driving signals; the grounding fault self-checking test unit detects a phase voltage signal, periodically generates a simulated grounding fault leakage current signal, detects whether the response of a system electric leakage detection loop and a tripping loop to a simulated grounding fault is correct, and performs determination and can output corresponding acoustic, optical and electrical alarm signals.

The invention discloses a mesa silicon controlled rectifier with a novel passivation structure and a preparation method thereof, and the mesa silicon controlled rectifier comprises an N-type silicon substrate, the front surface of the N-type silicon substrate and the back surface of the N-type silicon substrate are provided with P-type short base regions, the front surface of the N-type silicon substrate is provided with an N + type emitter region, and the back surface of the N + type emitter region is provided with a P-type short base region. The front surface of the N-type silicon substrate and the back surface of the N-type silicon substrate are provided with silicon dioxide films, and the two sides of the front surface of the N-type silicon substrate and the two sides of the back surface of the N-type silicon substrate are provided with composite passivation structures. Through a four-layer composite passivation structure of oxygen-doped polycrystalline silicon, glass, LPCVD deposited silicon dioxide and polyimide, the oxygen-doped polycrystalline silicon serves as an electric field adjusting layer, surface electric field distribution can be optimized, the glass provides basic mechanical protection, thermal stress is reduced through low-temperature sintering, the LPCVD deposited silicon dioxide serves as an insulating medium, ion migration is blocked, and the surface electric field distribution can be optimized. Polyimide is used as a flexible insulating layer and covers the damaged area of the table top, so that the mechanical performance and the electrical performance reliability of the device are improved.

A high-efficiency power electronic voltage regulating device with a reclosing function is connected in series with a low-voltage line and comprises a silicon controlled bypass switch, a series power unit, a parallel power unit, an input filtering unit, an output filtering unit, a controller, a topology change-over switch, a mechanical bypass switch, an input switch, an output switch and the like. Under a normal working condition, power is supplied to a user through the silicon controlled bypass switch; through an AI pre-judgment technology, a power grid voltage drop or increase trend is pre-judged, and a series power unit is conducted in advance; a topology change-over switch is connected to form a boost or buck topology, and when the voltage of a power grid is too low or too high, the normal voltage of a user is ensured through PR closed-loop control; when the rear-end line / load breaks down, reclosing control is carried out; and voltage upper and lower limits are adjusted remotely. The device utilizes the AI pre-judgment technology, has the characteristics of stable voltage, no need of input / output commutation and the like, solves the problems of over-high and over-low voltage and automatic reclosing in fault, and improves the high power supply quality and the power supply reliability of users.

The utility model relates to the technical field of dimming and color temperature switching, in particular to an IC chip and a multi-color-temperature switching circuit. A Flash storage module, a timer module, a first analog-to-digital conversion module, a second analog-to-digital conversion module, a third analog-to-digital conversion module, a processing module, a reference generation module, a comparator module, an operational amplifier AMP1, an operational amplifier AMP2, an MOS tube Q1 and an MOS tube Q2 are arranged in an IC chip, and a current setting pin and a first color temperature state setting pin are arranged on the IC chip. The second color temperature state setting pin, the third color temperature state setting pin, the power failure detection pin, the first LED current output pin and the second LED current output pin are matched together to realize the dimming and multi-color-temperature switching functions, so that the IC chip in the scheme can be compatible with the silicon controlled rectifier dimming function and also can realize multi-color-temperature switching.

System and method for controlling one or more light emitting diodes. For example, the system includes: a phase detector configured to process information associated with a rectified voltage generated by a rectifier and related to a TRIAC dimmer, the rectified voltage corresponding to a first waveform during a first half cycle of an AC voltage and corresponding to a second waveform during a second half cycle of the AC voltage, the phase detector being further configured to generate a phase detection signal representing a first time duration during which the first waveform indicates that the rectified voltage is larger than a predetermined threshold and representing a second time duration during which the second waveform indicates that the rectified voltage is larger than the predetermined threshold; and a mode detector configured to process information associated with the rectified voltage.

The utility model provides an intelligent control silicon controlled rectifier stable output circuit. The intelligent control silicon controlled rectifier stable output circuit comprises a silicon controlled rectifier signal input circuit, a rectification filter circuit, an intelligent control dimming module and a load power supply circuit. The rectification filter circuit is connected with the output end of the silicon controlled signal input circuit and is connected with the load power supply circuit through the active damping circuit. The intelligent control dimming module forms a control loop with a rectification filter circuit and a load power supply circuit through a plurality of electronic switch tubes, resistors, capacitors and other elements. When sine wave alternating current is input, the load power supply circuit outputs the maximum output current to the LED load; when a phase switching signal is input, the signal control end of the intelligent control dimming module outputs a high level, so that electronic switching tubes in the dummy load holding circuit and the small board load holding circuit are conducted and form a current loop, and therefore, a silicon controlled rectifier can obtain enough holding current and work stably; and the stability of the intelligent control silicon controlled rectifier stable output circuit is improved.

System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current generator configured to generate a first current flowing through one or more light emitting diodes. The one or more light emitting diodes are configured to receive a rectified voltage generated by a rectifying bridge coupled to a TRIAC dimmer. Additionally, the system includes a bleeder configured to receive the rectified voltage, and a controller configured to receive a sensing voltage from the current generator and output a control signal to the bleeder. The sensing voltage indicates a magnitude of the first current.

The invention discloses an obstetric table nursing temperature control method and system for breeding temperature control, and relates to the field of intelligent breeding. Firstly, a temperature and day age mapping table for breeding is recorded in a processor, a temperature and day age curve is established through the temperature and day age mapping table, after farrowing, the system is switched to a farrowing mode, and the farrowing time is recorded; based on the temperature day age curve and the farrowing time, the power of heating equipment on the obstetric table is adjusted through a silicon controlled rectifier adjusting technology so as to adjust the temperature of the obstetric table; the temperature of the obstetric table is detected through a temperature sensor, the detected temperature of the obstetric table is compared with the actually needed temperature, after calculation is conducted through a PID algorithm, power adjustment is conducted on the heating device on the obstetric table again, the temperature of the obstetric table continues to be adjusted, and the actual temperature of the obstetric table is made to be the same as the temperature value obtained through calculation of the temperature day age curve. Through cooperation of a PID algorithm, a silicon controlled rectifier voltage regulation technology and a day age growth temperature curve, accurate regulation of the temperature of the obstetric table is realized.

The utility model provides a communication cable detection device, comprising a detection host and a detection auxiliary machine, two ends of a communication cable to be detected are respectively connected with the detection host and the detection auxiliary machine through a first joint and a second detection joint; the detection host comprises a signal transmitting device, the communication cable to be detected comprises a shielded wire and other core wires, a light emitting diode L1i is arranged between a core wire i and the shielded wire in the detection auxiliary machine, in the detection host, the ground of the signal transmitting device is connected with the shielded wire, and the output end of the signal transmitting device is respectively connected with the core wire i in the communication cable to be detected; the grid electrode and the cathode of the silicon controlled rectifier Vi are respectively connected with the output end of the transmitting device and the core wire i in the first connector, and the anode of the silicon controlled rectifier Vi is connected with the positive electrode of the power supply; i is a natural number and is a serial number of a core wire in the communication cable to be tested. According to the utility model, the on-off of the communication line can be detected, and whether the conduction quality of the communication joint and each wire core is stable and reliable can be detected.

The invention provides a switch self-locking circuit, which comprises a power supply, a power-on signal receiving module, a first divider resistor module, a silicon controlled rectifier, a triode, a driving optocoupler module and an output module, and is characterized in that the first end of the power-on signal receiving module is connected with the power supply, and the second end of the power-on signal receiving module is electrically connected with the control end of the silicon controlled rectifier; the anode of the silicon controlled rectifier is electrically connected with the output end of the first divider resistor module, and the cathode of the starting signal receiving module is grounded; a first input end of the first divider resistor module is connected with a power supply, and a second input end of the first divider resistor module is electrically connected with a base electrode of the triode; the emitter of the triode is connected with a power supply; the collector of the triode is electrically connected with the input end of the driving optocoupler module; the first output end of the driving optocoupler module is grounded, the second output end of the driving optocoupler module is electrically connected with the first input end of the output module, and the third output end of the driving optocoupler module is electrically connected with the second input end of the output module. And the reliability of the switch self-locking circuit is improved.

A semiconductor package and semiconductor die, the semiconductor package including at least a first die. The first die includes internal circuitry disposed on a substrate, electrostatic discharge (ESD) protection circuitry disposed on the substrate but laterally spaced from the internal circuitry and including a first charge dissipation element, and a first silicon controlled rectifier (SCR) laterally adjacent.

The utility model relates to the technical field of temperature control, and particularly discloses an integrated alternating current temperature controller and a temperature control system, the integrated alternating current temperature controller is formed by integrating a temperature control module, a temperature acquisition module and a silicon controlled rectifier power output adjusting module in an outer shell to form a whole body, and the temperature control module, the temperature acquisition module and the silicon controlled rectifier power output adjusting module are installed on site. The temperature control module, the temperature acquisition module and the silicon controlled rectifier power output adjusting module need wiring operation due to mutual independence in the prior art, field wiring difficulty and maintenance difficulty are reduced, the field installation process is simplified, meanwhile, the three modules are directly integrated in one shell, the situation that one shell is adopted independently is avoided, and the cost is reduced. And the size is greatly reduced, and the device is more suitable for an environment with limited space.

The utility model discloses an auxiliary electrode of a direct-current electric arc furnace, which belongs to the technical field of electric arc furnaces and is characterized in that an auxiliary anode is arranged, so that the cathode current of the electric arc furnace is increased under the condition that the anode current of the electric arc furnace is not changed, and the temperature of a cathode molten pool of the electric arc furnace is increased; the auxiliary anode does not need to be additionally provided with a direct-current power supply, the silicon controlled rectifier power supplies of the anode and the cathode of the electric arc furnace are directly utilized, the equipment investment is greatly reduced, the power supply structure is simplified, and the silicon controlled rectifier four-electrode without the bottom electrode is also suitable for the direct-current electric arc furnace with six or more electrodes. The two IGBTs can be combined into one IGBT.

The present invention relates to an AC solid-state relay with a state detection function, which belongs to the technical field of AC solid-state relays and includes an input control module and an output detection module. The input control module is connected to the output detection module and is responsible for controlling the operation of the switching device in the output detection module. The output detection module is connected to the load and is responsible for detecting and supplying power to the load under the control of the input control module. The AC solid-state relay with a state detection function provided by the present invention realizes fault detection of thyristor short circuit, external load disconnection and no power supply at the power supply network end by setting the output detection module. Since the overall circuit structure is simple, the volume of the entire solid-state relay is reduced. In addition, since the output detection module leads to a first test terminal and a second test terminal, it can be conveniently connected to an external MCU, facilitating remote monitoring.

The utility model relates to a starting thermal protector assembling device with a capacitor direct plugging function. The device comprises a rotating disc mechanism, the rotating disc mechanism comprises a rotating disc and a plurality of fixing seats, and the fixing seats are arranged along the rotating disc in a circumferential array mode. The device is structurally characterized in that the turntable sequentially passes through a base placing station, a second pin and connecting piece welding piece placing station, a first pin placing station, a first reed placing station, a fifth reed placing station, a second reed placing station, a third reed placing station and a fourth reed placing station in the rotating process; the device comprises a triggering thermistor placing station, a starting thermistor placing station, a starting thermistor clamping force detection station, a silicon controlled rectifier placing station and a material taking station.

The utility model discloses a silicon controlled rectifier valve group with an air cooling heat dissipation assembly, which relates to the technical field of heater control and comprises an accommodating box, a plurality of groups of paired radiators are arranged in an inner cavity of the accommodating box, and silicon controlled rectifiers are clamped among the groups of radiators. The radiator is used for absorbing heat generated by the thyristor; the heat dissipation box is used for bearing the containing box, a plurality of heat dissipation fans are arranged in the heat dissipation box, the positions of all the heat dissipation fans correspond to the positions of all the sets of radiators, and the heat dissipation fans are used for blowing airflow to the heat dissipation fans; and the valve group control board is used for sending trigger signals to the silicon controlled rectifiers and controlling the on and off of the silicon controlled rectifiers. The silicon controlled rectifier valve group with the air cooling heat dissipation assembly achieves the technical effects of accurately regulating and controlling the temperature of the silicon controlled rectifier and improving the heat dissipation performance of the silicon controlled rectifier assembly.

This invention relates to a single-event latch-up evaluation method for advanced process technologies, comprising: constructing a high-energy particle incident model using the Geant4 Monte Carlo simulation tool; constructing and calibrating a three-dimensional basic device model using the TCAD simulation tool; constructing a standard cell circuit containing parasitic effects, extracting the parasitic thyristor structure of the standard cell circuit, and identifying sensitive regions of the parasitic thyristor structure; performing transient effect simulation on the identified sensitive regions based on the high-energy particle incident model to confirm whether latch-up is triggered; introducing anti-latch-up hardening measures for the sensitive regions, and performing simulation verification on the hardened standard cell circuit under the high-energy particle incident model; if the hardened standard cell circuit does not trigger latch-up, the anti-latch-up hardening measures are deemed effective. This method provides a systematic and automated solution that can fundamentally characterize the complex parasitic effects of advanced devices.

The utility model relates to the technical field of electric energy conversion, and discloses a power supply device, which comprises a shell with an accommodating cavity; the pressure regulating piece is arranged in the accommodating cavity; the heat dissipation piece is arranged in the containing cavity, and the heat dissipation piece and the pressure adjusting piece are arranged at intervals; and the rectification assembly is arranged in the accommodating cavity, the rectification assembly comprises six silicon controlled rectifier modules, the six silicon controlled rectifier modules are sequentially connected in series, and the silicon controlled rectifier modules are fixed on the heat dissipation piece and electrically connected with the voltage regulation piece. According to the utility model, the voltage regulating piece is electrically connected with the silicon controlled rectifier module, so that the input voltage can be regulated to be matched with the voltage required by the load; the silicon controlled rectifier module is adopted as a rectification structure, the fixing mode of the silicon controlled rectifier module and the heat dissipation piece is simpler, installation steps are simple, and assembly efficiency is high; the silicon-controlled module is fixed on the heat dissipation piece, so that the temperature of the silicon-controlled module can be reduced, and the service life of the silicon-controlled module is further prolonged.