This type of control is combination of two control modes, proportional and integral (reset). The Combining of the two modes…
Introduction Modulation is the process of changing some characteristics (e.g. Amplitude, Frequency, or Phase) of a carrier wave in accordance…
The RF network analyzer is an active test instrument which generates a signal that is applied to the device under…
The laws that determine the currents and voltage drops in DC networks: Ohm’s law The law’s for resistors in series…
Resistors perform two basic functions in electronics: To limit current flow To set voltage levels within a circuit These two…
Introduction to Programmable Logic Controllers What is a Programmable Logic Controller? A PLC is a user friendly; microprocessor-based specialized equipment…
What is Inductance? Inductance is the property of a circuit whereby there is an emf induced into the circuit by…
Spectrum analysis is the analysing of signals in terms of their frequencies. The spectrum analyser can measure the frequencies present…
Introduction to Capacitors A capacitor is an electrical device that is used to store electrical energy. A capacitor consists of…
Valves cannot control a process by themselves. Manual valves require an operator to position them to control a process variable.…
