1, What is the working principle of the regulator? A regulator is a device that stabilizes the output voltage. The regulator is composed of constant voltage, control circuit, and servo motor. When the input voltage or load changes, the control circuit samples, compares, amplifies, and then drives the servo motor to turnMove, so that the regulator carbon brush position change, by automatically adjusting the coil turn ratio, so as to maintain the output voltage stability.
2, switching regulator: The switching regulator uses the output stage to repeatedly switch the "on" and "off" states, and produces the output voltage together with the energy storage component. Its adjustment is achieved by adjusting the switching timing according to the feedback sample of the output voltage. In a fixed-frequency regulator, the switching timing is regulated by adjusting the pulse width of the switching voltage, which is called PWM control. Parametric voltage regulator: LDO is a linear voltage regulator.
3, if it is OKBy detecting the output voltage to control the opening and closing time, in order to keep the output voltage unchanged, which realizes the purpose of voltage regulation.
4, the voltage regulator is a device that makes the output voltage stable. The regulator is composed of constant voltage, control circuit, and servo motor. When the input voltage or load changes, the control circuit samples, compares, amplifies, and then drives the servo motor to rotate, so that the position of the regulator carbon brush changes, and the coil turn ratio is automatically adjusted to maintain the stability of the output voltage.
Output voltage Role of the switching regulator chip : This is the main voltage provided by the power supply to the load. It can be set to a specific value to ensure the stability of the output voltage. Ground wire Role of the switching regulator chip : Ground wire is a way to connect the ground potential of an electronic device to the earth. In DC regulated power supplies, the ground wire is usually a zero potential point to which all circuits are connected to ensure the stability of the circuit.
Ratio of stable voltage used in regulated power supplyMore such as a fixed voltage regulator chip, in its required input voltage range, its output voltage is constant. Models have 78 series 78xx, 79 series 79xx, the last two digits represent the voltage regulator value The role of the switch regulator chip; LM series of fixed and adjustable voltage regulation.
Voltage regulator diodes are implemented in a variety of ways, the most common of which is the Zener diode. The Zener diode is a special PN junction diode that has a very low reverse breakdown voltage, usually between 2V and 200V. DanzenWhen the reverse voltage of the er diode exceeds its breakdown voltage, it automatically adjusts the current to keep the output voltage constant.
A voltage regulator chip is an electronic component that can stably adjust the input voltage to a specific output voltage. The way it works is that when the input voltage changes, the regulator chip detects this change and adjusts the output voltage to keep it at a specific voltage level. The voltage regulator chip usually consists of a comparator, an amplifier, and a feedback circuit.
is a forward voltage regulator integrated circuit, that is, the 7812 input is greater thanWith a positive voltage of 15v, there is a stable positive 12v output at its output end. 7912: The input end is connected to the negative terminal of the input voltage, and the middle terminal is connected to the positive terminal of the input voltage, so its output end output is negative 12v.
The main role of AC-DC power module is to convert alternating current (AC) to direct current (DC), usually this process includes rectification, filtering and voltage regulation several key steps. The function and action of this moduleVoltage conversion: Alternating current of different voltage levels, such as common household electricity 220V or 110V AC, can be converted into one or more low-voltage direct current required by electronic equipment, such as 5V, 12V, 24V DC, etc.
AC/DC/ : The power flow can be bidirectional, the power flow from the power supply to the load is called "rectification", and the power flow from the load back to the power supply is called "active inverter". DC/DC/DC: The use of microelectronics technology, the small surface mount integrated circuit and miniature electronic components assembled into one.
Once the chip starts working, the output voltage of the winding provides continuous power to the chip. Once the chip starts working, the GATE foot drives the switch tube to open or close, and each output winding has voltage output. The source pole of the switching tube is connected with a current sampling resistor, and the sampling voltage is sent to the CS pin of the chip. When the current reaches the designed maximum value, the CS pin voltage is greater than the reference voltage set inside the chip, and the GATE pin voltage becomes low, and the switching tube is turned off.
The role of the switching power supply is to convert a level voltage into the current or voltage required by the client through different forms of architecture. Switch power supply utilization cutThe converter switches between the fully open mode (saturation region) and the fully closed mode (cut-off region), both modes have the characteristics of low dissipation, and the conversion between the switches will have a higher dissipation, but the time is very short, so it is more energy saving and produces less waste heat.
is a high-frequency electrical energy conversion device, is a power supply. Its function is to convert a level voltage into the voltage or current required by the client through different forms of architecture. The so-called switching power supply refers to its adjustment tube working in the switching state (series stable power supply adjustment tube working in the amplified state), which is characterized by a high working frequency of up to 10,000Multi-hz; Transformer with ferrite core, small volume, greatly reduce copper consumption and iron consumption.
Switching power supply is also known as switching power supply, switching converter. It is a high-frequency electrical energy conversion device and a power supply device. Its function is to convert a level voltage into the voltage or current required by the client through different forms of architecture.
Linear power chip: Linear power chip is a common type of power chip, which works by amplifying and amplifying the input voltageThe voltage regulator circuit converts to a stable output voltage. This type of power chip has the characteristics of simple and low cost, and is suitable for some occasions where the quality of the power supply is not high.
AC-DC conversion chip: Responsible for converting alternating current to direct current, such as the chip used in the aforementioned power adapter or power module. DC-DC conversion chip: Includes various forms of converters, such as Buck (Buck) converter, Boost (Boost) converter, and buck-boost (Buck) converter chip.
System-level Power Management Unit (SPM) :The system-level power management unit is a highly integrated power management solution that integrates multiple power management functions such as voltage regulation, battery charging, load switching, and power distribution. SPMS typically have complex control logic and communication interfaces that can interact with other parts of the system for smarter power management.
1, EN/SS This has two functions EN is the enable of a function, SS is Soft start (soft-s)tart). GND indicates ground. SW is the Switch pin. FB is the FeedBack pin. COMP is the Compensation pin. OSC is the Oscillator pin.
2, is the input public end. Can be connected to 0V or 24V, can be, if S is connected to 0V, belongs to the source input, then input X to connect to 24V; If S is connected to 24V, it is a leaky input, then input X should be connected to 0V. I suggest you check the hardware manual of Delta PLC.
3, I2C, SPI is the data transmission protocol in the communication, that is, the communication protocol. Two signal lines SDA and SCL are used in I2C communication, which are data line and clock line respectively. Four signal lines MISI, MISO, SCLK and SS are used in SPI communication, which are respectively data input, data output, clock and enable end. NC represents empty pin.
4, device indicates the meaning of the device, that is, the operating voltage inside the device, in ordinary electronic circuits, the general VccVdd! VSS: S=series indicates a public connectionMeaning, that is, the negative pole. Some ics have both VCC and VDD, which are devices with voltage conversion capabilities.
5, VSS: S=series means the common connection, that is, the negative pole. Some ics have both VCC and VDD, which are devices with voltage conversion capabilities. In the "field effect" i.e. COMS component, VDD is the drain pin of CMOS, VSS is the source pin of CMOS, this is the component pin symbol, it does not have the name "VCC", your question contains 3 symbols, VCC/VDD /VSS, VCC /VSS, VCC /VSS, VCC/VDD /VSS.This is clearly a circuit symbol.
Suppress output voltage fluctuations, the voltage regulator can also be regarded as a role in eliminating spikes or output surges, and can play a good role in inhibiting interference higher than the voltage regulator value. I hope it helps.
Voltage regulator clamp voltage in switching power supply, used to protect the circuit, preventOverpressure causes damage to other devices; There are also circuits that require precise voltage and need to use a voltage regulator to stabilize the voltage.
The role of N4148 is to supplement the insufficient part of the regulator ZD2. If R3 is replaced by inductors, D10 is reasonable as a continuation diode, and there are no inductors in the circuit, R4 and D10 are redundant. There is a problem in this circuit, there should also be a current limiting resistance between Vcc and the circuit, otherwise when Vcc is greater than 9V, ZD2 and D3 current increases sharply, resulting in burnout.
In the switching power supply circuit, the voltage regulator series means that multiple voltage regulator tubes are connected inTogether, to achieve efficient current distribution. The main reason is that the capacity of a single voltage regulator is limited, and if only one is used, it is difficult to meet the requirements of high power. By connecting a number of voltage regulator tubes together, its capacity can be effectively expanded, so that the switching power supply can work normally.
The problems caused by this connection: first, the efficiency is too low, and the second may directly burn the regulator. If we must better protect the IC, or Vcc empty full load voltage difference is too large need to regulate the voltage, how should we connect better? With a resistor, a regulator, an N-type triode, a simple assembly