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DIGITAL ELECTRONICS - CIRCUIT DESIGN & REPORT 1
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Engineering & Manufacturing > Electrical

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Description
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Jun 20, 2011
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Job Description

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  • Posted: Sat, Jun 18, 2011
  • Time Left: Closed
  • Location: Anywhere
  • Client prefers freelancers from:
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  • Start: Immediately
  • Hourly Rate: Less than $10 / hr
  • Hrs/wk: Not Sure | Duration: 1-2 weeks
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  • W9 Not Required
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DIGITAL ELECTRONICS

DESIGN AND REPORT REQUIRED
Details:

A strain gauge is used in Wheatstone Bridge configuration. The output from the Wheatstone Bridge varies from zero to a maximum strain output of 12V, that is it is in the positive quadrant.

You are required to convert this 0 -12 V analog signal into a 12 bit digital signal (Analog to Digital Conversion, ADC). The maximum frequency of the analog signal is 20 KHz (this governs the Nyquist sampling rate).

The relationship between the analog value of the digital signal and the input analog signal is such that it obeys the square law. The functional relationship is exhibited by the digital step having a greater sensitivity at the low voltage levels than at the higher voltage level (the analog equivalent of the digital step is smaller at the lower voltage levels than at the higher voltage levels).

The resultant digital signal is also converted to the Gray code in that only one bit is to change for each quantisation level chan...

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Desired Skills
Electrical Engineering
Job ID: 24780261
Proposals
Hourly Rate: Avg $ | High $ | Low $ — Show Pricing
  • Submit Date (Latest)

 United States  |  
Winner
30 years experience as Instrumentation and Controls Engineer
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Bid ID: 24791578  |  Submitted: Jun 19, 2011 06:56 ET 
Proposal SEALED

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Hi, We are expert in Electronic Circuits Design and Simulation. Microcontroller programming. Analog and Digital Circuits Design and Development....
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EXPERIENCE: Analog design and smps experience: And also 4 year experince about smps, battery charger, analog design. I have designed li-ion...
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Bid ID: 24780901  |  Submitted: Jun 18, 2011 02:24 ET 
Proposal SEALED
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