Signal Generators

Signal Generators A signal generator is an instrument that provides a controlled output waveform or signal for use in testing, aligning or in measurements on other circuits or equipment. The signal generators can be classified into the following categories:- 1. Audio generators 2. Function generators 3. Pulse generators 4. RF generators 5. Frequency synthesizers 6.

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Integrated Circuits – IC

J.S. Kilby of Texas Instruments was the first person to develop (in 1959) an integrated circuit — a single monolithic silicon chip in which active and passive components were fabricated by successive deposition, etching and diffusions. He was soon followed by Robert Noyce of Fairchild who successfully fabricated a complete IC including the interconnections on

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IC Voltage Regulator Circuits

IC Voltage Regulator Circuits Due to low-cost fabrication technique, many commercial integrated-circuit (IC) regulators are available since the past two decades. These include fairly simple, fixed-voltage types of high-quality precision regulators. These IC regulators have much improved performance as compared to those made from discrete components. They have a number of unique build-in features such

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Electronic Control of AC Motors

Electronic Control of AC Motors Efficient control of motors becomes critical where high precision, accuracy, reliability and faster response are of paramount importance. Electronic and digital controls  are employed in such conditions. Classes of Electronic A.C. Drives AC motors, particularly, the squirrel-cage and wound-rotor induction motors as well as synchronous motors lend themselves well to

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AC Series Motor

AC Series Motor If an ordinary d.c. series motor were connected to an a.c. supply, it will rotate and exert unidirectional torque because the current flowing both in the armature and field reverses at the same time. But the performance of such a motor will not be satisfactory for the following reasons:- However, by proper

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