Talk about the structure and working principle of the CD player of the CD player series from scratch
Newcomers who are new to the HIFI circle often hear some “slang” in the industry, involving There are also a lot of CD players. I believe that many old players were confused when they heard the terms “turntable” and “belt” for the first time. To understand these terms, we must start with the structure and working principle of the CD player.
The main function of the CD player is to play CD records. First, the CD player needs to make the CD record rotate stably at an appropriate speed, and then the laser head reads the laser beam reflected from the record, obtains relevant digital information, and then accurately restores the information to the original analog signal, so that the power amplifier can These signals are amplified and played back in the speakers.
The CD player accomplishes the above functions through two parts, mechanical and electrical. The mechanical part mainly refers to the movement, including the spindle, spindle motor, tracking guide rail, tracking motor and laser head components. A series of work such as tracking.
The circuit part is mainly composed of laser head, signal processing, movement servo, control display and power supply circuit, etc. It completes a series of work of reading from optical disc, signal conversion and processing.
Regardless of the mechanical and circuit parts, it will have an impact on the CD player’s playback effect and sound quality. In the nearly 30 years of development since its birth, the technology of CD players has become quite mature, and a large number of well-known brands have emerged.
