servo unit; power booster; force multiplier
Technical term for a device that amplifies force or power, often used in mechanical or control systems.
This robot arm incorporates a high-precision servo unit.
By using a power booster, you can lift heavy objects with little force.
サーボ機構 is a broader term for servo mechanisms, while 倍力装置 specifically refers to a device that multiplies force or power.
増幅器 is an amplifier, typically for signals or sound, whereas 倍力装置 is for mechanical force amplification.
Compound of 倍力 (double force) and 装置 (device). The exact historical derivation is uncertain; the term is a modern technical coinage.