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Related Concept Videos

Resonance in an AC Circuit01:26

Resonance in an AC Circuit

The property of an inductor makes it resist any change in the current passing through it, while the property of a capacitor is to build up the charge across its terminals. Hence, if an inductor and capacitor are connected in series, they have opposite effects on the relative phase between current and voltage. The current through the circuit undergoes forced oscillation at the frequency of the source. The resistance term in an R-L-C circuit acts as a damping term because power is dissipated...
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
Characteristics of Series Resonant Circuit01:24

Characteristics of Series Resonant Circuit

Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
RLC Circuit as a Damped Oscillator01:30

RLC Circuit as a Damped Oscillator

An RLC circuit combines a resistor, inductor, and capacitor, connected in a series or parallel combination.
Consider a series RLC circuit. Here, the presence of resistance in the circuit leads to energy loss due to joule heating in the resistance. Therefore, the total electromagnetic energy in the circuit is no longer constant and decreases with time. Since the magnitude of charge, current, and potential difference continuously decreases, their oscillations are said to be damped. This is...
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Josephson junction resonance detection circuit.

H J Smith1

  • 1Physics Department, University of Waterloo, Waterloo, Ontario, Canada.

The Review of Scientific Instruments
|March 1, 1978
PubMed
Summary
This summary is machine-generated.

A new electronic circuit allows for the observation of all resonances in Josephson junction current-voltage characteristics. This advancement aids in studying the fundamental properties of these superconducting devices.

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Area of Science:

  • Solid State Physics
  • Superconductivity
  • Electronic Engineering

Background:

  • Josephson junctions are fundamental superconducting devices exhibiting unique current-voltage (I-V) characteristics.
  • Observing all resonances in these I-V curves is crucial for understanding their behavior and potential applications.
  • Previous methods may have limitations in fully characterizing these resonances.

Purpose of the Study:

  • To present a novel electronic circuit designed for comprehensive observation of Josephson junction resonances.
  • To facilitate detailed analysis of the current-voltage (I-V) characteristics of Josephson junctions.

Main Methods:

  • Development of a specialized electronic circuit.
  • Integration of the circuit with Josephson junction devices.
  • Measurement and analysis of the resulting current-voltage (I-V) characteristics.

Main Results:

  • The described circuit successfully enables the observation of all characteristic resonances.
  • Detailed current-voltage (I-V) curves displaying multiple resonances were obtained.
  • The circuit provides a robust platform for studying Josephson junction phenomena.

Conclusions:

  • The developed electronic circuit is effective for observing all Josephson junction resonances.
  • This tool enhances the study of superconducting device physics.
  • The findings contribute to the advancement of superconducting electronics research.