Introduction to instruments
D.C. Signal Conditioning System
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D.C. Signal Conditioning System:The block diagram of d.c. signal conditioning system is shown in the Fig 
The resistance transducers are commonly used for the d.c. systems. The resistance transducers like strain gauge forms one or more arms of a wheatstone bridge circuit. A separate d.c. supply is required for the bridge. The bridge is balanced using potentiometer and can be calibrated for unbalanced conditions. This is the function of Cdlibration and zeroing network. Then there is d.c. amplifier which also reqUIres i..l separate d.c. supply. The d.c. amplifier must have following characteristics:
Balanced differential inputs. High common mode rejection ratio. (CMRR) Hlgh input impedance. Good thermal and long term stability. The d.c. system has following advantages: It is easy to calibrate at low frequencies. It is able to recover from an overload condition. But the main disadvantage of d.c. system is that it suffers from the problems of drift.The low frequency spurious unwanted signals are available alongwith the required data signal. For overcoming this, low drift d.c. amplifiers are required. The output of d.c. amplifier is given to a low pass filter. The function of low pass filter is to elliminate unwanted high frequency components or noise from the required data signzd. Thus the output of low pass filter is the required data signal. Thus the output of low pass filter is the required d.c. output from the d.c. signal conditioning system. The applications of such system are in use with common resistance transducers such as potentiometers and resistance strain gauges. Directory: wp-content -> uploads -> 2017 2017 -> Leadership ohio 2017 -> Ascension Lutheran Church Counter’s Schedule January to December 2017 2017 -> Board of directors juanita Gibbons-Delaney, mha, rn president 390 Stone Castle Pass Atlanta, ga 30331 2017 -> Military History Anniversaries 16 thru 31 January Events in History over the next 15 day period that had U. S. military involvement or impacted in some way on U. S military operations or American interests 2017 -> The Or Shalom Cemetery Community Teaching on related issues of Integral 2017 -> Ford onthult samenwerking met Amazon Alexa en introduceert nieuwe navigatiemogelijkheden van Ford sync® 3 met Applink 2017 -> Start Learn and Increase gk. Question (1) Name the term used for talking on internet with the help of text messege? 2017 -> Press release from 24. 03. 2017 From a Charleston Car to a Mafia Sedan 2017 -> Tage Participants 2017 -> Citi Chicago Debate Championship Varsity and jv previews Download 3.23 Mb. Share with your friends:
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