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Related Concept Videos

Equivalent Capacitance01:19

Equivalent Capacitance

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From the study of resistive circuits, it is understood that employing a series-parallel combination serves as an effective strategy for simplifying circuits. Capacitors can be arranged within a circuit in one of two ways: a series configuration or a parallel configuration. The way these capacitors are connected to a battery will influence both the potential drop across each individual capacitor and the size of the charge that each capacitor can store. This is determined by the specific type of...
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Equivalent Capacitance01:19

Equivalent Capacitance

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Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
The following strategies are adopted to calculate...
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Capacitors and Capacitance01:18

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A device consisting of two electrical conductors that are separated by a distance and used to store electrical charges is called a capacitor. The space between the conductors is either a vacuum or an insulating material, called a dielectric. Capacitors have many applications, ranging from filtering static from radio reception to energy storage in heart defibrillators.
When the conductors are two identical parallel plates, it is called a parallel plate capacitor. When battery terminals are...
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Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

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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.
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Capacitance: Single-Phase And Three-Phase Line01:25

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In electrical power systems, understanding the capacitance of transmission lines is fundamental for efficient operation.
Single-Phase Lines
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Super-resolution Fluorescence Microscopy01:37

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Related Experiment Video

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Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
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A Super-Capacitive Pressure Sensor for a Urethral Catheter.

M Ahmadi, Y Zhang, R Rajamani

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |November 17, 2018
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel instrumented urethral catheter with a super-capacitive pressure transducer for improved urodynamics. This device enhances the measurement of urethral pressure profiles, aiding in diagnosing urinary incontinence causes.

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    Area of Science:

    • Biomedical Engineering
    • Urology
    • Materials Science

    Background:

    • Urinary incontinence stems from neuromuscular or structural issues in the bladder or urethra.
    • Urodynamics studies are crucial for diagnosing patient-specific causes of urinary incontinence.
    • Measuring urethral pressure profiles is a complex but vital aspect of urodynamics.

    Purpose of the Study:

    • To develop and evaluate a novel instrumented urethral catheter for precise urethral pressure profile measurement.
    • To integrate a highly sensitive super-capacitive pressure transducer into a urethral catheter system.
    • To address the challenges in accurately assessing urethral pressure during urodynamic studies.

    Main Methods:

    • Fabrication of a novel super-capacitive pressure transducer using a solid ionic electrolyte.
    • Integration of the transducer onto a 3D-printed soft balloon attached to a 6 Fr urethral catheter.
    • Design, construction, and performance evaluation of the instrumented catheter.

    Main Results:

    • The instrumented catheter incorporates a highly sensitive super-capacitive pressure transducer.
    • A solid ionic electrolyte was utilized to create a high capacitance device.
    • The catheter's design, fabrication, and performance evaluation are detailed in the paper.

    Conclusions:

    • The developed instrumented urethral catheter offers enhanced sensitivity for pressure measurements.
    • This innovation has the potential to improve the accuracy of urodynamic assessments.
    • The study presents a promising tool for diagnosing the causes of urinary incontinence.