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2) the AC 220 V Power ,
3) Provides DC±15V and DC﹢5V , the DC﹢5V is for power of Digital ammeter.
4) with a choseable current,
5) It can show servo valves' current value without vibration signal by Digital display.
6) Convenient operate on panel .
7) Be used for closed loop controlling,also for open-loop controlling.
8) Input signal and feedback signal will be amplified and then be to the Adder, and then after the
driven stage amplified, then driving the Servo valve.
9) It can add the appropriate flutter signal.
10) More other technology requests optional.
