Data Acquisition Techniques Using PCs, Second Edition (IDC by Howard Austerlitz

By Howard Austerlitz

The second one version of this hugely profitable textual content specializes in the foremost alterations that experience taken position during this box in recent years. Data Acquisition concepts utilizing desktops, moment Edition, recognises that facts acquisition is the center of such a lot engineering and lots of lifestyles technological know-how structures in size and instrumentation. it is going to end up necessary to scientists, engineers, scholars and technicians wishing to maintain with the most recent technological developments.

  • Teaches the reader how one can manage a PC-based procedure that measures, analyzes, and controls experiments and tactics via targeted layout examples
  • Geared for starting and complicated clients, with many tutorials for much less skilled readers, and specific criteria references for more matured readers
  • Fully revised re-creation discusses most modern programming languages and incorporates a checklist of over eighty product manufacurers to avoid wasting important time

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Extra info for Data Acquisition Techniques Using PCs, Second Edition (IDC Technology (Paperback))

Example text

1 The Operational Amplifier The most common analog circuit semiconductor component is the operational amplifier, called the op amp. This circuit element is usually a monolithic device (an integrated circuit), although hybrid modules, based on discrete transistors, are still used in special applications. The op amp is used in both linear and nonlinear applications involving amplification and signal conditioning. The "classic" op amp, which we will discuss in detail here, is based on a voltage-feedback architecture.

This number is often represented in decibels (dB) as Dynamic range (dB) = 20 x logio (max/min) If both positive and negative values are measured. Maximum value = maximum positive value - minimum negative value For example, a data acquisition system with a 1-mV resolution and a value range of 0 to +10 V (or -5 to +5 V) has a dynamic range of 10,000:1, or 80 dB. This dynamic range requires a minimum of 14 bits to represent it, since 2^^ = 16,384, which is greater than 10,000, whereas 2^^ (8192) is less than 10,000.

The reader should refer to the bibliography for other books that treat op amp theory and practice in greater depth. The simplest op amp circuit is the voltage follower shown in Figure 3-4. It is characterized by full feedback from the output to the inverting (-) input, where the output is in phase with the noninverting (+) input. It is a buffer with very high input impedance and low output impedance. If the op amp Vout Figure 3-4 Op amp voltage follower. 2 Analog Circuit Components 33 Vout Figure 3-5 Op amp inverting amplifier.

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