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本文叙述一种采用先进可控的PWM技术研制的系列比例阀电控器，适应多种同类比例阀控制，并可大大减少温漂和滞环，减少本机功耗和发热。文中介绍广工作原理和特点。
This article describes a series of advanced controllable PWM technology developed proportional valve electronic controller to adapt to a variety of similar proportional valve control, and can greatly reduce the temperature drift and hysteresis, reduce local power consumption and heat. The article describes the principle and characteristics of wide work.