Control switchgear in China in Nigeria

The “phase control” circuitry manages all this pulse timing and generation. A DC motor drive that simply varied power to the motor according to a control signal would be crude …

Power delivered to devices can be changed by raising or lowering the voltage and current. But this method does not always produce intended results. Pulse width modulation (or …

A “ user-defined ” letter represents a non-standard variable used multiple times in an instrumentation system. For example, an engineer designing an instrument system for …

Thus, a cascade control system consists of two feedback control loops, one nested inside the other: A very common example of cascade control is a valve positioner, which …

There are many process control applications in the industry where it is desirable to have multiple control valves respond to the output of a common controller. Control valves …

Control Valve Characterization Control valves are supposed to deliver reliable, repeatable control of process fluid flow rate over a wide range of operating conditions. As we …

Controlling and optimizing plant processes is the goal of most control systems. It can be a challenge to distinguish between different types of control: a DCS or a high-level …

The beauty of ladder-logic programming is that it translates the technician’s understanding of traditional relay control circuits into a virtual form where contacts and coils …

Learn about various ways to activate directional control valves for fluids using manual input, air pilot sources, and electrical controls. Sometimes, valves even use a mix of …

The variable frequency drive unit solves the challenges of driving a 3-phase motor with careful speed control and efficiency, without being overly cost-prohibitive in most cases. …