When we think of late nineties to early 00’s videos, we are brought back to VCR tapes, short for video cassette recorder. These nostalgic tape recorders record and replay video and audio signals, and the main goal is audio and video registration, and playback. VCRs were created in 1956 by Japanese media companies Sony and the Japanese Victor Company. VCRs play VHS tapes which we can recall long before the days of Blueray.
VCRs are videocassette recorders that have electromagnets in them that are very small magnetic pieces of metal that are embedded on a disk in a pattern specific to the given information. The data is first spelled out in a binary digital computer language that uses 0s and 1s. When info is retrieved, the pattern is then converted into a usable form. The electromagnetic part is when the current that runs through the motor's circuit magnetizes the very small pieces of said metal. The purpose of the electromagnet is to harness potential energy; the motor is able to move because the current that flows into it is provided by wall sockets that produce a magnetic field. The magnet creates a charge that powers the motor- it is not due to electricity.
So how does an electromagnet motor work in a VCR, you ask?
So, first the VHS player (VCR) is a means by which TV programs are recorded onto magnetic tape. The difference between a VHS and VCR is that there's a reel to reel tape inside of the plastic case of a VHS cassette which the VCR steadily winds the tapes with a motor. As this happens, it passes over the playback head which read the encoded signals on the magnetic tape which are then translated into audio and video signals that are fed to a TV.
How are things recorded?
First, the TV information is a signal that is decoded by the VCR's internal tuner into audio and video. Then, the electromagnetic signal is encoded onto the tape as it passes through the motor.
If you really wanna see what this cool electromagnet looks like, here's a cool video of someone playing with a VCR electromagnet: playing with a VCR electromagnet
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