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Related Concept Videos

Oscillations In An LC Circuit01:30

Oscillations In An LC Circuit

An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
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Aliasing

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The Discrete Fourier Transform (DFT) is a fundamental tool in signal processing, extending the discrete-time Fourier transform by evaluating discrete signals at uniformly spaced frequency intervals. This transformation converts a finite sequence of time-domain samples into frequency components, each representing complex sinusoids ordered by frequency. The DFT translates these sequences into the frequency domain, effectively indicating the magnitude and phase of each frequency component present...
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The operational amplifier, commonly known as an op-amp, is a specially designed electronic circuit component. Its purpose is to work in conjunction with other circuit elements to execute a defined signal-processing operation. Consider an equivalent circuit model of an op-amp, as depicted in Figure 1; the output section comprises a voltage-controlled source in parallel with the output resistance Ro.
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

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Enhancement Method of Surface Acoustic Wave-Atomizer Efficiency for Olfactory Display
08:06

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Published on: November 14, 2018

A surface-acoustic-wave comb spectrum oscillator for sensor applications.

I D Avramov1, Z G Georgiev

  • 1Inst. of Solid State Phys., Sofia.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|January 1, 1991
PubMed
Summary

A novel surface-acoustic-wave comb spectrum oscillator (SAWCSO) offers enhanced sensitivity for sensor applications. This device generates low jitter pulses, improving velocity change detection compared to traditional oscillators.

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Area of Science:

  • Physics
  • Electrical Engineering
  • Materials Science

Background:

  • Traditional oscillators often lack the sensitivity required for precise sensor applications.
  • Surface acoustic wave (SAW) devices are utilized in various sensing technologies.

Purpose of the Study:

  • To describe a new surface-acoustic-wave comb spectrum oscillator (SAWCSO) for advanced sensor applications.
  • To evaluate the performance of SAWCSO in detecting velocity changes.

Main Methods:

  • Development of a SAWCSO utilizing a long delay line.
  • Characterization of pulse generation in the kHz range.
  • Measurement of relative sensitivity to velocity changes.

Main Results:

  • The SAWCSO successfully generates narrow pulses with low jitter in the kHz range.
  • The relative sensitivity to velocity changes approaches the theoretical maximum.
  • Sensitivity is at least double that of single-mode oscillators.

Conclusions:

  • The developed SAWCSO is a promising technology for high-sensitivity sensor applications.
  • The device's performance surpasses conventional single-mode oscillators for velocity sensing.