HDMI cable and double magnetic ring
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HDMI cable and double magnetic ring
The HDMI interface provides up to 5 Gbps of data transmission bandwidth for uncompressed audio signals and high resolution video signals. At the same time, there is no need to perform digital / analog or analog / digital conversion before signal transmission. This ensures the highest quality video and audio signal transmission. HDMI is pin compatible with DVI, but the package is different. Compared to DVI, HDMI can transmit digital audio signals and provide better DDC options while adding HDPC support.
Some HDMI cables, especially longer ones, have a small device magnetic ring attached. Magnetic rings, also called ferrite magnetic rings, are anti-interference components commonly used in electronic circuits. It has an excellent suppression effect against high-frequency noise and is usually made of ferrite material (Mn-zn). Electromagnetic waves radiated and leaked by electronic devices are not only serious for other electronic devices to function properly, but also pose device malfunctions, transmission errors, and threats to human health and safety. Anti-interference magnetic rings can effectively reduce the radiation of electronic devices and reduce the harm of radiation to electronic devices and the human body. Magnetic rings can be used to effectively shield EM interference and to isolate or filter high frequency noise pulse interference on the power connection wires to the device circuit. Also use audio and video power lines for audio and video quality.