1. Structure and characteristics of audio tape
The audio tape is composed of a tape base and a magnetic layer, and the tape base is a carrier of the magnetic layer. The magnetic layer includes three components of magnetic powder, binder and auxiliary agent. The tape should have good mechanical properties such as good tensile strength, smoothness and softness, as well as coercivity and residual magnetic induction. The magnetic layer should have good adhesion. Its electroacoustic indicators are: sensitivity, frequency characteristics, dynamic range, and signal to noise ratio, crosstalk and so on.
2. The basic structure of the magnetic head
The magnetic head is made of a high magnetic permeability soft material as a toroidal core. It is a key component for electromagnetic transduction in recording equipment. Different head structures are slightly different.
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