Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Clipper Circuit01:18

Clipper Circuit

907
A clipper circuit is a fundamental wave-shaping device that harnesses the unique properties of diodes to alter and control waveform characteristics. This technology is widely used in electronic devices, especially in television and radar communication systems, where it enhances waveform modulation in both transmitters and receivers.
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...
907
Wave Parameters01:10

Wave Parameters

9.4K
The simplest mechanical waves are associated with simple harmonic motion and repeat themselves for several cycles. These simple harmonic waves can be modeled using a combination of sine and cosine functions. Consider a simplified surface water wave that moves across the water's surface. Unlike complex ocean waves, in surface water waves, water moves vertically, oscillating up and down, whereas the disturbance of the wave moves horizontally through the medium. If a seagull is floating on the...
9.4K
Generator Voltage Control01:21

Generator Voltage Control

700
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand, use...
700
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

7.6K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
7.6K
Effective Value of a Periodic Waveform01:07

Effective Value of a Periodic Waveform

1.3K
The concept of effective value, the root mean square (RMS) value, is crucial in understanding electrical circuits and power delivery. This idea emerges from the necessity to measure the effectiveness of a voltage or current source in supplying power to a resistive load.
The effective value of a periodic current represents the direct current (DC) that conveys the same average power to a resistor as the periodic current itself. This concept is crucial when assessing AC circuits. To determine the...
1.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Diabetes-related need for circumcision.

Urology·2011
Same author

The testis--what did he witness?

BJU international·2002
Same author

Sildenafil increases ocular perfusion.

International ophthalmology·2002
Same author

Sildenafil and ocular perfusion.

The New England journal of medicine·2000
Same author

Defibrillator testing.

Biomedical instrumentation & technology·1999
Same author

Hemostatic control with flexible compression tape used during partial nephrectomy and organ salvage.

The Journal of urology·1999
Same journal

Nurses' attitudes toward conventional and automated vital signs measurement methods.

Medical instrumentation·1988
Same journal

Implementation of a home-based program for early detection of clinical deterioration in cystic fibrosis.

Medical instrumentation·1988
Same journal

A home-based pulmonary function monitor for cystic fibrosis.

Medical instrumentation·1988
Same journal

Blood pressure reactivity and bias vary with age in a comparison of traditional and automated methods of measurement.

Medical instrumentation·1988
Same journal

Human factors and design evaluation of digital blood pressure/pulse meters.

Medical instrumentation·1988
Same journal

Electrically produced artificial ventilation.

Medical instrumentation·1988
See all related articles

Related Experiment Video

Updated: Feb 24, 2026

Investigation of the Electrophysiological and Thermographic Safety Parameters of Surgical Energy Devices During Thyroid and Parathyroid Surgery in a Porcine Model
11:46

Investigation of the Electrophysiological and Thermographic Safety Parameters of Surgical Energy Devices During Thyroid and Parathyroid Surgery in a Porcine Model

Published on: October 13, 2022

2.0K

A programmable variable waveshape generator for electrosurgical research.

G C Gerhard, W R Elliott, S M Selikowitz

    Medical Instrumentation
    |May 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a novel variable waveform electrosurgical unit (VWESU) for advanced research. This innovative device offers precise control over waveform modulation and output impedance, enhancing electrosurgical capabilities.

    More Related Videos

    Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications
    08:19

    Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

    Published on: October 5, 2018

    6.9K
    Direct-current Stimulation and Multi-electrode Array Recording of Seizure-like Activity in Mice Brain Slice Preparation
    09:39

    Direct-current Stimulation and Multi-electrode Array Recording of Seizure-like Activity in Mice Brain Slice Preparation

    Published on: June 7, 2016

    11.2K

    Related Experiment Videos

    Last Updated: Feb 24, 2026

    Investigation of the Electrophysiological and Thermographic Safety Parameters of Surgical Energy Devices During Thyroid and Parathyroid Surgery in a Porcine Model
    11:46

    Investigation of the Electrophysiological and Thermographic Safety Parameters of Surgical Energy Devices During Thyroid and Parathyroid Surgery in a Porcine Model

    Published on: October 13, 2022

    2.0K
    Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications
    08:19

    Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

    Published on: October 5, 2018

    6.9K
    Direct-current Stimulation and Multi-electrode Array Recording of Seizure-like Activity in Mice Brain Slice Preparation
    09:39

    Direct-current Stimulation and Multi-electrode Array Recording of Seizure-like Activity in Mice Brain Slice Preparation

    Published on: June 7, 2016

    11.2K

    Area of Science:

    • Biomedical Engineering
    • Electrical Engineering
    • Surgical Technology

    Background:

    • Electrosurgical units (ESUs) are crucial in surgery for cutting and coagulation.
    • Existing ESUs typically offer limited waveform control, restricting research possibilities.
    • The need for adaptable electrosurgical tools for advanced research applications is evident.

    Purpose of the Study:

    • To design and develop a novel variable waveform electrosurgical unit (VWESU) for electrosurgical research.
    • To enable precise, cycle-by-cycle modulation of the sinusoidal carrier amplitude.
    • To provide adjustable output impedance and power comparable to commercial generators.

    Main Methods:

    • A microprocessor-controlled variable waveform generator was designed.
    • Waveforms are programmed into memory using simple commands.
    • A linear power amplifier and custom output transformer were utilized.
    • Analog switches directly pipeline memory contents to modulate the radio-frequency carrier.

    Main Results:

    • The developed VWESU successfully achieved cycle-by-cycle amplitude modulation.
    • The unit provides output power equivalent to commercial electrosurgical generators.
    • Variable output impedance was successfully implemented.
    • The design bypasses microprocessor speed limitations through direct memory pipelining.

    Conclusions:

    • The designed VWESU offers a flexible and powerful platform for electrosurgical research.
    • Precise control over waveform parameters is achievable.
    • The unit's capabilities advance the potential for novel electrosurgical applications and investigations.