CLOSED LOOP CONTROL SYSTEMS
Closed-Loop Control Systems is also known as Feedback Control Systems. Disadvantages of open loop control system are corrected through the…
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OPEN LOOP CONTROL SYSTEMS
Open loop system is also known as non-feedback system. An open-loop control system is shown in Fig. It starts with…
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ADVANTAGES OF CONTROL SYSTEMS
With control systems we can move large equipment with precision that would otherwise be impossible. We can point huge antennas…
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TYPES OF INDUCTORS
Coils, inductors, and chokes are the names used to indicate a coil of wire. “Inductor” is preferred because inductors have…
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TYPES OF CAPACITORS
The capacitor is used in many electric circuits in both electronics and in air conditioning and refrigeration circuits. Two types…
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TYPES OF RESISTORS
The resistor is the most widely used electrical and electronic device. Every radio, television set, and control circuit has a…
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SOURCES OF ELECTRICITY
The five most important sources of electricity for technicians are chemical action, heat, light, pressure, and magnetism. 1) CHEMICAL ACTION…
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NATURE OF POLE VOLTAGE WAVEFORMS OUTPUT BY PWM INVERTERS
Unlike in square wave inverters the switches of PWM inverters are turned on and off at significantly higher frequencies than…
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PULSE WIDTH MODULATED INVERTER
Pulse width modulated (PWM) inverters are among the most used power-electronic circuits in practical applications. These inverters are capable of…
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THREE PHASE SYSTEMS
In a single-phase ac circuit, instantaneous power to a load is of a pulsating nature. Even at unity power factor…