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  • Electronics and Electrical Engineering  (2)
  • 2000-2004  (2)
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  • 1
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    Unknown
    Arc-Tangent Circuit for Continuous Linear Output (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: A device suitable for determining arc-tangent of an angle theta is provided. Circuitry generates a first square wave at a frequency omega(t) and a second square wave at the frequency omega(t) but shifted by a phase difference equal to the angle theta. A pulse width modulation signal generator processes the first and second square waves to generate a pulse width modulation signal having a frequency of omega(t) and having a pulse width that is a function of the phase difference theta. The pulse width modulation signal is converted to a DC voltage that is a linear representation of the phase difference theta.
    Keywords: Electronics and Electrical Engineering
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Resolver to 360.degree. linear analog converter and method (2000)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The converter produces a linear analog signal that is linearly proportional to a shaft angle of a resolver over 360.degree.. An excitation cosine signal supplied to the resolver and a response cosine signal received from the output windings of the resolver are converted to logic level signals. Digital logic is performed on the logic level signals in a programmable digital logic device to produce a logic level pulse-width modulated signal. The logic level pulse-width modulated signal is used to control a switch to switch between two reference voltage levels to produce a pulse-width modulated signal, which is filtered and buffered to produce the linear analog signal.
    Keywords: Electronics and Electrical Engineering
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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