Search Results for – "GENERATOR"

Series Inductance in Impulse Generator Circuit

Series Inductance in Impulse Generator Circuit: Often Series Inductance in Impulse Generator Circuit are required to test equipment with large inductance, such as power transformers and reactors. Usually, generating the impulse voltage wave of proper time-to-front and obtaining a good voltage efficiency are easy, but obtaining the required time-to-tail as per the standards will be […]

Electrostatic Generators

Electrostatic Generators: Van de Graaff generators are essentially high voltage but low power devices, and their power rating seldom exceeds few tens of kilowatts. As such Electrostatic Generators machine which effectively convert mechanical energy into electrical energy using variable capacitor principle were developed. These are essentially duals of electromagnetic machines and are constant voltage variable […]

Booster Generator

Booster Generator: A Booster Generator is a D.C. generator whose function is to inject or add certain voltage into a circuit so as to compensate the IR drop in the feeders etc. A Booster Generatorr is essentially a series d.c. gen­erator of large current capacity and is con­nected in series with the feeder whose voltage […]

Generator Transformer Protection

Generator Transformer Protection: Generator Transformer Protection – Protective relays, being component parts of electrical switchgear, should be closely associated with the control section of such systems, e.g. indicating and signalling systems. Thus the signalling and indicating systems must also be designed on a static basis. The plug in type modular chassis has been widely adopted already in electronic regulating and control equipment. […]

Color Bar Generator

Color Bar Generator: Color Bar Generator – The composite video signal at the output of a video detector consists of luminance Y signals, the chrominance signal, the color burst, sync pulses and blanking pulses. The amplitude of the video signal varies continuously due to the changing picture content, such a waveform is not useful for […]

Video Test Pattern Generator

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 is designed to produce simple geometric patterns like vertical and horizontal bars, checkerboard, cross-hatch, dots, etc. These patterns are used […]

Marker Generator

Marker Generator: Marker Generator – The sweep generator provides a visual display of the characteristics of the circuit or amplifier, but this is inadequate because it does not give any precise information of the frequency on the traced curve. For this, a separate RF generator, known as the Marker generator is used. This generator though […]

Sweep Frequency Generator

Sweep Frequency Generator: Sweep Frequency Generator – An RF generator, when used for alignment and testing of the RF and IF stages of a TV receiver, permits recording of circuit performance at one frequency at a time. Therefore, plotting the total response curve point by point over the entire channel bandwidth becomes a laborious process […]

Block Diagram of Sweep Generator

Block Diagram of Sweep Generator: Block Diagram of Sweep Generator – It provides a sinusoidal output voltage whose frequency varies smoothly and continuously over an entire frequency band, usually at an audio rate. The process of frequency modulation may be accomplished electronically or mechanically. It is done electronically by using the modulating voltage to vary […]

Random Noise Generator Block Diagram

Random Noise Generator Block Diagram: A simplified Random Noise Generator Block Diagram used in the audio frequency range is shown in Fig. 8.8.   The instrument offers the possibility of using a single measurement to indi­cate performance over a wide frequency band, instead of many measurements at one frequency at a time. The spectrum of […]

Square and Pulse Generator

Square and Pulse Generator Block Diagram(Laboratory Type): Square and Pulse Generator Block Diagram are used as measuring devices in combination with a CRO. They provide both quantitative and qualitative information of the system under test. They are made use of in transient response testing of amplifiers. The fundamental difference between a pulse generator and a […]

Function Generator

Function Generator: A Function Generator produces different waveforms of adjustable frequency. The common output waveforms are the sine, square, triangular and sawtooth waves. The frequency may be adjusted, from a fraction of a Hertz to several hundred kHz. The various outputs of the generator can be made available at the same time. For example, the […]