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These power amplifiers are used to drive the proportional electro-hydraulic directional and flow control valves．
Instructions：
1. Power Supply for the Setting Adjuster
Power supply for the setting adjuster can be provided from this power amplifier, but for only one. However, please use the variable resistor or potentiometre of which impedance is 2kΩ for the setting adjuster.
2. Power Switch
The power amplifier has no power supply switch. As soon as it is connected to a power supply, it comes to be alive. Provide a power switch externally.
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