Electric shavers are divided into rotary and reciprocating types according to the action mode of blades. The former has simple structure, low noise and moderate shaving power; The latter has complex structure and high noise, but it has great shaving power and high sharpness.
According to the external structure, the rotary electric shaver can be divided into straight tube type, bent tube type, electric scissors type and double head type (see figure). The first two structures are simple, while the latter two are more complicated. Electric shavers can be divided into three types according to the types of prime movers: DC permanent magnet motors, AC -DC series motors and electromagnetic vibration.
Requirements for electric shaver: 1, there is no AC power supply, or you often go out to carry users. Generally, it is more appropriate to choose an electric shaver driven by dry batteries.
2. If there is AC power supply and it is often used in fixed places, it is best to choose AC power supply or rechargeable electric shaver.
3, hope to be able to adapt to the use of various occasions, should choose AC, rechargeable, dry battery multi-purpose electric shaver.
4. If the beard is sparse and the skin is smooth, and it is required to shave shorter, you can choose a vibrating reciprocating electric shaver or a general rotary electric shaver. For a beard with a thick and hard beard, you can choose a rectangular slit external knife electric shaver, a circular slit external knife electric shaver, or a three-head rotary electric shaver. However, this kind of electric shaver is complicated in structure and expensive.
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