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PLC Structure

PLC Structure: The PLC Structure mainly consists of a CPU, memory areas, and appropriate circuits to receive input/output data as shown in Fig. 21.22. A PLC can be considered as…

PLC Definition(Programmable Logic Controller or Programmable Controller): PLC Definition - Programmable Logic Controller (PLC) or commonly simply called a Programmable Controller, is a solid state, digital, industrial computer. It is…

Pulse Width Modulation

Pulse Width Modulation(PWM): Pulse width modulation of PTM is also often called Pulse Duration Modulation (PDM). In this system, shown in Fig. 18.8, we have a fixed amplitude and starting…

Ladder Type Converter D/A

Ladder Type Converter D/A: Looking into any load from the left side we always see a resistor R. Similarly looking from the right side for any load, one always sees…

Negative Feedback Op Amp

Negative Feedback Op Amp: Negative Feedback Op Amp - The Inverting Amplifier configuration is shown in Fig. 14.8. The input signal is applied to the inverting terminal. The amplified inverted…

Video Test Pattern Generator

Video Test Pattern Generator: A pattern generator provides video signals directly, and with RF modulation, on standard TV channels for alignment, testing and servicing of TV receivers. The output signal…

Digital Capacitance Meter Block Diagram

Digital Capacitance Meter Block Diagram: Digital Capacitance Meter - Since the capacitance is linearly proportional to the time constant, when a capacitor is charged by a constant current source and…

Digital Measurement of Time

Digital Measurement of Time: Principle of Operation of Digital Measurement of Time - The beginning of the time period is the start pulse originating from input 1, and the end…