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Analog Electronics with LabVIEW®
book

Analog Electronics with LabVIEW®

by Kenneth L. Ashley
October 2002
Intermediate to advanced content levelIntermediate to advanced
432 pages
9h 20m
English
Pearson
Content preview from Analog Electronics with LabVIEW®

P12.3. Opamp Oscillator

Components

Use R1 = R3 from the integrator.

Make Rfosc = R1 = R3 and use Cf from the integrator.

Tosc ≈ 2.2RfoscCf (12.26)

Note that Tosc is about ½ of the design Tmax from the integrator or about 50 ms.

Procedure

  • Turn off the power supply to reconnect the circuit into the oscillator configuration. Note the connection of Chan1_in, which measures the capacitor voltage.
  • The main VI, Oscillator.vi(below), contains subVI’s CountCycles.vi and T.vi.CountCycles.vi determines the number of cycles in the oscillator output data array (Chan0_in) by checking for sign changes. It then increases or decreases the sample rate (for a ...
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Publisher Resources

ISBN: 0130470651Purchase book