Data Acquisition System: A typical Data Acquisition System consists of individual sensors with the necessary signal conditioning, data conversion, data processing, multiplexing, data handling and associated transmission, storage and display systems. In order to optimise the characteristics of the system in terms of performance, handling capacity and cost, the relevant sub systems can be combined […]
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Development of Electric Power Industry: The basic human need for safe, efficient, and affordable light became the driving force which led to the Development of Electric Power Industry of today’s continent-spanning electric energy or power systems. In the mid-nineteenth century gaslight was the predominant but not very safe and practical means of illumination. The inventive
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Resonant Coaxial Wavemeter: A Resonant Coaxial Wavemeter line such as illustrated in Fig. 16.1 and operating as a resonant system can be used to measure frequencies in the range of 600 — 10,000 MHz. At lower frequencies the cavity becomes excessively long and at higher frequencies the dimensions become very small. The arrangement illustrated is
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IIR Filter Design 1-D: In this section some practical considerations relating to the methods for the design of IIR Filter Design filters are presented. In particular, the bilinear transform is considered along with its application to the digitization of rational transfer functions of classical analog filters defined on the s-plane or in the framework of
Diode Bridge Type Modulator with Transformer Coupling: Diode Bridge Type Modulator – Figure 14.33 shows a silicon diode ring modulator with an associated ac coupled dc amplifier. The amplifier itself has a gain of 65 db and a flat response within ± 1 db, from 8 Hz to 80 kHz. Precautions are taken to safeguard
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Pressure Inductive Transducer: Pressure Inductive Transducer – A simple, arrangement, wherein a change in the inductance of a sensing element is produced by a pressure change, is given in Fig. 13.22. Here the pressure acting on a movable magnetic core causes an increase in the coil inductance corresponding to the acting pressure. The change in
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Resistive Position Transducer: The principle of the Resistive Position Transducer is that the physical variable under measurement causes a resistance change in the sensing element. (A common requirement in industrial measurement and control work is to be able to sense the position of an object, or the distance it has moved). One type of displacement
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Potentiometric Recorder Working Principle (Multipoint): Potentiometric Recorder Working Principle – The thermocouple or millivolt signal is amplified by a non-inverting MOSFET, chopper stabilized, feedback amplifier. This configuration has a very high input impedance and the current passing through the signal source is a maximum of 0.5 nA (without broken sensor protection). With the use of
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Magnetic Tape Recorder Working Principle: The major advantage of using a Magnetic Tape Recorder Working Principle is that once the data is recorded, it can be replayed an almost indefinite number of times. The recording period may vary from a few minutes to several days. Speed translation of the data captured can be provided, i.e.
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XY Recorder Working: XY Recorder Working – In most research fields, it is often convenient to plot the instantaneous relationship between two variables [Y = f(x)], rather than to plot each variable separately as a function of time. In such cases, the X-Y recorder is used, in which one variable is plotted against another variable.
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