Choice of Electrical Drives: Choice of Electrical Drives depends on a number of factors. Some of the important factors are: Steady state operation requirements: Nature of speed torque characteristics, speed…
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…
A Simple Electric Motor: Variable speed drives in the industry employ a simple electric motor as their drive motors mainly because they enjoy several specific advantages, such as overload capacity,…
Digital Data Recording System: Digital Data Recording - Digital magnetic tapes are often used as storage devices in digital data processing applications. Digital tape units are of two types, incremental…
Pulse and Square Wave Generator Block Diagram (Laboratory Type): Pulse and Square Wave Generator are used as measuring devices in combination with a CRO. They provide both quantitative and qualitative…
What is Load Curve?: Load drawn by consumers is the toughest parameter to assess scientifically. The magnitude of the load, in fact, changes continuously so that the load forecasting problem…
Basic Principle of Chopper Circuit: A Basic Principle of Chopper Circuit is essentially a thyristor switch in series with the load as shown in Fig. 11.27(a). A shunting diode is…
Astable Multivibrator Using IC 555: Fig. 2.105 shows the operation of Astable Multivibrator using 555 Timer IC. The threshold input is connected to the trigger input. Two external resistances RA,…