What are the characteristics of the power supply system and the characteristics of the communication

A power management chip is an important electronic component used to control and manage the power supply of electronic devices. Common power management chips include the following: 1

Lithium-ion battery management chips: Lithium-ion batteries have the advantages of high energy density, light weight, and long life, and are widely used in mobile devices, electric vehicles, and other fields. The lithium-ion battery management chip is used to protect the battery from overcharging, overcharging, and prolonging the battery life, and at the same time, it can also realize the balanced management of the battery and protect the battery from damage such as overcharge, overdischarge, and overcurrent.

2.Power switch management chip: The power switch management chip is used to control the on/off of the power supply, and is usually used in low-power electronic devices such as home appliances and LED lighting.

It can automatically control the on/off of the power supply according to the working state of the equipment, so as to achieve the purpose of saving energy and prolonging the service life of the equipment....

Designed for the requirements of the communications industry.

It adopts the international advanced high-frequency phase-shift edge resonance technology, ultra-wide range power grid AC input, and the module adopts power factor correction technology, which is efficient and reliable.

Fully automatic current sharing N+1 redundant modular design.

The monitoring system realizes the rectifier module, feeder input, and the battery intelligent real-time tube monitoring system realizes the rectifier module

Feeder input, battery intelligent real-time tube.

With multi-level lightning protection measures, the system has strong impact resistance and fast dynamic response.

The system scheme is perfect and can be widely used in various communication equipment.

Summary. Characteristics of the voltage source: The terminal voltage of the voltage source is fixed or a certain time function u(t) independent of the current flowing. The voltage source itself is determined, while the current flowing through it is arbitrary.

Characteristics of current source: The internal resistance of the current source is very large relative to the load impedance, and the fluctuation of load impedance will not change the current size. The series resistance in the current source loop is meaningless because it does not change the current of the load and does not change the voltage on the load.

Summarize the characteristics of various types of power supplies.

Characteristics of the voltage source: The terminal voltage of the voltage source is fixed or the function u(t) of a certain time dust town is independent of the current flowing. The voltage source itself is determined, and the current flowing through it is arbitrary.

Characteristics of current source: The internal resistance of the current source is very large relative to the load impedance, and the fluctuation of load impedance will not change the current size. The macro series resistor is meaningless in the current source loop because it does not change the current of the load and does not change the voltage on the load.

Isn't that the characteristic of constant voltage and constant current sources?

What about the characteristics of voltage sources and current sources?

Voltage source characteristics: The terminal voltage value u of the voltage source or a certain time function u(t) is independent of the current flowing. The voltage source itself is determined, while the current flowing through it is arbitrary.

Current source characteristics: The internal resistance of the current source is very large relative to the load impedance, and the load impedance fluctuation will not change the current size. It is meaningless to cover the series resistance in the current source dust town loop, because it does not change the current of the load, nor does it change the voltage on the load.

Hello. Voltage source characteristics: The terminal voltage value u of the voltage source or a certain time function u(t) is independent of the current flowing.

The voltage source itself is determined, while the current flowing through it is arbitrary. Current source characteristics: The internal resistance of the current source is very large relative to the load impedance, and the load impedance fluctuation will not change the current size.

It is meaningless to cover the series resistance in the current source dust town loop, because it does not change the current of the load, nor does it change the voltage on the load.

You are the characteristics of a constant voltage source and a constant current source.

Please wait. Characteristics of the voltage source: The voltage of the voltage source is a constant value us or a function of a given time, independent of the current flowing through and carrying the element; The current flowing through a voltage source can be arbitrary and is determined by the external circuit connected to the voltage source.

Voltage sources are divided into two broad categories: DC voltage sources and time-varying voltage sources.

Characteristics of the current source: three characteristics 1. The output current is constant; 2. The DC equivalent resistance is infinite; 3. The AC equivalent resistance is infinite.

The communication power supply system has the following characteristics:

1.High maintenance efficiency and low cost.

2.It can give full play to the advantages of computer technology, so that the management of power supply equipment develops in the direction of automation and intelligence.

3.The communication power supply has high power supply quality, which can make the power supply system have higher reliability and economy.

The communication power supply system is an integral part of the communication system, often called the "heart" of the first communication system, and occupies an extremely important position in the communication system. If the communication power supply system fails, the power supply quality will be reduced or the power supply will be interrupted, and the communication system will not operate normally, which will inevitably lead to the failure of the communication system. The failure of the communication system will cause huge economic losses and immeasurable political repercussions.

1.The voltage at the source of the ideal voltage is fixed, or a function of time t us(t), independent of the external circuit.

2.The current through an ideal voltage source depends on the external circuit to which it is connected.

An actual voltage source, the terminal voltage of which varies with the change in current. Because it has internal resistance.

3.In layman's terms, the internal resistance is 0, and the output voltage is a certain value, which is always equal to the electromotive force.

The 48V communication power supply is often referred to as the heart of the communication system, and if it does not work properly, it will cause the communication system to malfunction, or even lead to the paralysis of the entire system. In order to ensure the smooth operation of the entire communication system, the communication power monitoring system came into being.

The communication power monitoring system is a device that can carry out telemetry, remote signaling and remote control of the distributed communication power supply equipment and the air conditioning in the computer room, can monitor and display its operating parameters in real time, and can automatically monitor and deal with various faults in the system. The use of communication power centralized monitoring system has the following advantages:

1.It realizes the communication power supply equipment with fewer people, unattended and centralized maintenance;

2.It improves maintenance efficiency and reduces maintenance costs.

3.Improve the maintenance and management level of communication power supply equipment;

4.The power supply quality of the communication power supply is improved, and the power supply system has higher reliability and economy.

5.It gives full play to the advantages of computer technology, so that the management of power equipment develops in the direction of automation and intelligence;

The communication power supply system generally includes a double-loop 10 kV high-voltage system, a 10 kV 380 V low-voltage substation and distribution system, an oil engine power supply system, a high-frequency switching power supply system (DC rectification and distribution system), a UPS system, a lightning protection and grounding system, a centralized monitoring system, etc. In the base station power supply system, the 10 kV high-voltage system is generally not included, and the local 220 380 V power supply is usually directly introduced, and the others are basically the same. Although the communication power supply system accounts for a relatively small proportion of the entire communication industry, it is the key infrastructure of the entire communication network and a complete and irreplaceable independent specialty on the communication network.

For power supply products is also the most basic, the development and change speed of product technology is also different from other communication products, there are many types of communication power supply products, including high-frequency switching power supply equipment, semiconductor rectifier equipment, DC-DC module power supply, DC-DC conversion equipment, inverter power supply equipment, AC and DC power distribution equipment, AC voltage regulator, AC uninterruptible power supply (UPS), lead-acid battery, mobile communication handheld battery, generator set, centralized monitoring system, etc.

Mine power supply system.

A system composed of mine power supply lines and substation and distribution equipment. The main requirement for a power supply system in a mine is to be safe and reliable. The ground power supply system includes ground substations and high and low voltage distribution networks.

Urban power supply system.

A system consisting of a power network of power sources and voltages at all levels is one of the infrastructures that provide energy for modern cities. Urban power supply system planning is an integral part of the city's master plan.

Electric traction power supply system.

A system in which an electrified railway supplies traction power to an electric locomotive. It is mainly composed of traction substation and catenary. The traction substation depresses and transforms the electric energy sent by the power system through the high-voltage transmission line and transmits it to the catenary to supply the electric locomotive running along the line.

Power supply system impedance.

Defining the impedance of the power supply system as seen from a common connection point is called the power supply system impedance.

Power supply system harmonics.

OverviewThe definition of harmonics in the power supply system is to perform a Fourier series decomposition of the periodic non-sinusoidal electricity, in addition to obtaining the same components as the fundamental frequency of the grid, but also to obtain a series of components that are larger than the fundamental frequency of the grid, which is called harmonics.

Star connections. A connection method in which the ends of each phase in a three-phase power supply or load are connected together to form a neutral point, and then the end wire is led from the beginning of each phase.

The introduction to interharmonics defines the voltage or current containing the design operating frequency of the power supply system, and the non-integer multiple frequency as interharmonics.

Aircraft electrical systems.

A general term for the power supply system and various electrical equipment of an aircraft. The power supply system includes the aircraft power supply system and the aircraft power distribution system, the former is used to generate and regulate electrical energy; The latter is used to distribute and manage electrical energy.