• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
unit3-1
unit3-1

High/Low Voltage Disconnect Test Procedure
High/Low Voltage Disconnect Test Procedure

... Test Author: Andrew and Xiaolong The high voltage disconnect is integrated to protect the battery from overcharging and low voltage disconnect is integrated to disconnect the USB and fan so the battery will have enough power to restart the system for one hour. ...
BSPS3255TNC(R)
BSPS3255TNC(R)

... and optional remote contact signaling. The unique module locking system fixes the protection module to the base part. Modules can be easily replaced without tools by simply depressing the release buttons. Integrated mechanical coding between the base and protection module ensures against installing ...
Lec 11
Lec 11

... The output of rectifiers - although unidirectional - is not suitable to supply a radio because it contains still a RIPPLE - an ac partition of the voltage. These ripples cause distortion to the radio. Therefore, there are means needed which reduce these ripples and convert the output voltage of the ...
PHYS 222 Worksheet 13 – RC Circuits τ
PHYS 222 Worksheet 13 – RC Circuits τ

... In order to find current through other types of circuits, you must convert the other circuit into this form. Related Problems 1) A 4.40 µF capacitor that is initially uncharged is connected in series with a 6.60 kΩ resistor and an emf source with ε = 130 V negligible internal resistance. (Book 26.38 ...
ELECTROMAGNETIC INDUCTION
ELECTROMAGNETIC INDUCTION

... is first switched into a circuit, it behaves like and open circuit because the current cannot change instantaneously from its zero initial value After the circuit has been switched on for a long time, the current has reached a state where its value is not changing (steady state value) anymore, hence ...
Transformers
Transformers

... Transformers What is a transformer? ...
High Efficiency, 4A Output, Synchronous Step Down
High Efficiency, 4A Output, Synchronous Step Down

... „ Broadband, Networking and Optical Communication Infrastructure ...
Electronic_Circuits_Unit-7
Electronic_Circuits_Unit-7

ch7.4_designandappli..
ch7.4_designandappli..

... LEARNING BY DESIGN FIND C SUCH THAT i (t ) IS OVERDAMPED , AND SATISFIES : ...
No Slide Title
No Slide Title

Two-Switch Voltage Equalizer Using an LLC Resonant
Two-Switch Voltage Equalizer Using an LLC Resonant

auto bridge revised - Sivananda Electronics
auto bridge revised - Sivananda Electronics

The Basics of Series Circuits
The Basics of Series Circuits

(b) (c) (d)
(b) (c) (d)

AC / DC converter
AC / DC converter

... Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to applicati ...
Voltage Brochure.indd
Voltage Brochure.indd

s8610u
s8610u

... - Continuous trial: No lockout to causenuisanceshutdowns ...
Serway_PSE_quick_ch32
Serway_PSE_quick_ch32

... a sinusoidal voltage. Thus, the magnetic field in the inductor is constantly changing. The inductor is a simple air-core solenoid. The switch in the circuit is closed and the lightbulb glows steadily. An iron rod is inserted into the interior of the solenoid, which increases the magnitude of the mag ...
File
File

Capacitors including RC Circuits
Capacitors including RC Circuits

... We need to eliminate Q1 and q. Solve the first equation for Q1 and the third equation for q. Substitute both of these results into the middle equation. The resulting equation has V's which we know and the ratio C2/C1 which we want. Repeat the above measurements making sure you obtain consistent resu ...
Isolation Transformer
Isolation Transformer

... High Voltage DC Isolation Transformers  High Voltage DC Isolation Transformers are used to provide AC power to circuits that are operated at a DC voltage for either polarity above ground potential. All units are conservatively designed for continuous operation with high reliability. Low internal lo ...
capacitor
capacitor

... • The conducting plates are separated by an insulating material which is called the ...
Name(s): Physics 202 Part I. (Capacitors in parallel) Geometry (size
Name(s): Physics 202 Part I. (Capacitors in parallel) Geometry (size

... We need to eliminate Q1 and q. Solve the first equation for Q1 and the third equation for q. Substitute both of these results into the middle equation. The resulting equation has V's which we know and the ratio C2/C1 which we want. Repeat the above measurements making sure you obtain consistent resu ...
Capacitor Applications - HolyStone International
Capacitor Applications - HolyStone International

< 1 ... 314 315 316 317 318 319 320 321 322 ... 367 >

Spark-gap transmitter



A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report