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Dan Graham Basic Electrical Theory October 1, 2021, 4:36 am
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4-20ma Control Basics
Back in the “good old days,” controls were all analog and mechanical, which simply means that they acted in a directly connected and variable manner based on a change in force. Both pneumatic (air pressure) or hydraulic (fluid pressure) systems are examples of mechanical or analog controls. When the pressure increased or decreased on a […]Read more