What Is Erase Magnetic Head?

- Jun 23, 2018-

Erase magnetic head is a magnetic head that can generate a strong AC or DC magnetic field to eliminate the tape remanence signal. According to its structure, it can be divided into magnetic, AC and DC eraser heads. Constant magnetic eraser is actually a strong magnet; DC wiper magnet uses permalloy material as core, the number of turns of the head coil is more (usually thousands of turns), and the DC resistance of the coil is several hundred ohms; AC erase head Commonly used ferrite cores, the number of turns of the coil is small (usually about one side), DC resistance is a few ohms to a dozen ohms, and the supersonic current is usually between 40 and 100Khz.



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