Compared with pneumatic actuators, what are the characteristics of electric actuators, and how many output forms are there?

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The electric drive source is simple and convenient for electric power, with large thrust and torque, and high rigidity. However, the structure is complicated and the reliability is poor, and it is more expensive than pneumatics in small and medium sizes. It is often used in applications where there is no gas source or no strict explosion-proof or flameproof requirements. The electric actuator has three output forms: angular stroke, linear stroke, and multi-turn.