Purpose and advantages of 12V power supply

Purpose of the 12V power supply:

1. Automotive and transportation

– Automobile electrical system: Car batteries are generally 12V, which is the key to car starting and the operation of many equipment. When starting the engine, the starter requires a 12V power supply to provide a strong current to drive the engine crankshaft to rotate, thereby starting the engine.

– On-board electronic equipment: The lighting system in the car, such as headlights for night lighting, small lights for outline display, turn signals for indicating steering intentions, in-car reading lights for passengers to read in the car, etc., all rely on 12V power supply. Car radios, CD players, car multimedia systems, etc. also rely on 12V power supplies to work to provide entertainment and information services to drivers and passengers. The normal operation of various indicators and displays on the electronic instrument panel is also inseparable from the 12V power supply.

– Electric vehicles: The power supply system of some electric motorcycles and electric tricycles is 12V, which is used for the control circuit of the vehicle, including power supply of lights, horns, instrument panels, controllers and other components to ensure safe driving and normal operation of the vehicle.

2. Computer and office equipment field

– Computer hardware: Many of the cooling fans inside the computer chassis are powered by 12V. By continuously rotating, they cool the CPU, graphics card and other hardware to ensure that the computer works within the normal temperature range. The computer’s hard disk motor also requires a 12V power supply to drive it to store and read data.

– Office equipment: The internal motors and control circuits of some small printers and copiers use a 12V power supply. For example, the paper feeding motor, the toner cartridge rotating motor and other parts rely on a 12V power supply to complete paper transfer and imaging operations.

3. field of security monitoring

– Surveillance cameras: A large number of closed circuit television (CCTV) cameras are powered by 12V power supplies. Whether it is an indoor or outdoor surveillance camera, after the 12V power supply is input, it is converted by internal circuits to provide stable power to image sensors, signal processing chips and other components, ensuring that the camera can clearly capture video images and transmit signals to storage devices or monitoring centers.

4. communication field

– Small communication equipment: Some small program-controlled switches, wireless routers and other equipment can use 12V power supply. In some temporary communication network construction or backup power supply scenarios, the 12V power supply can ensure the normal operation of the equipment and realize data transmission and communication functions.

5. Consumer electronics and entertainment equipment

– Portable devices: such as mobile DVD players, the internal laser head drive motor, display backlight and other parts require a 12V power supply to provide users with the function of playing movies. In some handheld game consoles, their screen display, button control circuits, etc. are powered by the output of a 12V power adapter to ensure the normal operation of the game.

– Home theater system: For some small active slightly, the power amplifier part may use a 12V power supply to amplify the audio signal and push the speaker to sound, bringing better audio-visual enjoyment to users.

6. Industrial control and automation

– Sensors and controllers: In industrial automation production lines, some small proximity sensors, photoelectric sensors, etc. are powered by a 12V power supply and are used to detect the position, presence and other information of objects. These sensors feed back the detected signals to the controller, and some circuits of the controller may also be supplied with 12V power, so that the actions of actuators such as motors and valves can be controlled based on the sensor signals.

Advantages of 12V power supply:

1. High safety: The 12V voltage belongs to a relatively low safe voltage range. Under normal use, when the human body comes into contact with the positive and negative electrodes of the 12V power supply, it generally does not cause strong electric shock damage, which reduces safety during use. risk.

2. Strong compatibility: 12V power supply is a common standard voltage level. Many different types and brands of electronic equipment are designed to directly use 12V power supply input, such as automotive electronic equipment, computer hardware, monitoring equipment, etc., making it convenient for users to share power resources between different devices or expand and upgrade devices.

3. Good stability: The 12V power supply can provide a relatively stable DC voltage output. For electronic equipment with high requirements for voltage stability, such as computer CPU, graphics card, hard disk, etc., it can ensure the normal operation of these equipment and reduce the caused by voltage fluctuations. Equipment failure or performance degradation.

4. High conversion efficiency: In the process of converting commercial power to 12V DC power, modern 12V power conversion technologies, such as switching power supply technology, can achieve higher conversion efficiency, reduce energy waste, reduce cost of use, and at the same time It also helps reduce heat generation and improves equipment reliability and service life.

5. Easy to maintain: Because the 12V power supply system is relatively simple, the maintenance cost of its related power supply equipment and lines is lower, and it is easier to troubleshoot and repair when a failure occurs.