• 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
© This item is protected by original copyright
© This item is protected by original copyright

... Mechanically switched capacitor with damping network (MSCDN) is used as reactive power compensation unit in the modern power systems. MSCDN stabilizes the voltage and increases the transmission capacity to ensure the availability of reactive power for feeding in the injection of reactive power at sh ...
DC TRANSIENT ANALYSIS
DC TRANSIENT ANALYSIS

... • Any first – order circuit can be reduced to a Thévenin (or Norton) equivalent connected to either a single equivalent inductor or capacitor. RTh ...
Switch_Mode_Converters
Switch_Mode_Converters

... Control of DC-DC Converters In a dc-dc converter: • Average output dc voltage must be controlled to equal a desired level. • Utilizes one or more switches to transform dc from one level to another. • The average output voltage is controlled by controlling the switch on and off durations (ton and to ...
Application Note No. 099
Application Note No. 099

www.BDTIC.com/Hittite/
www.BDTIC.com/Hittite/

M81734FP - Mitsubishi Electric Corporation
M81734FP - Mitsubishi Electric Corporation

Magnetizer System - IEA
Magnetizer System - IEA

MEASUREMENTS of RF Voltage
MEASUREMENTS of RF Voltage

... connected in parallel at the reference plane of the T-junction. However, although T-junctions are chosen to be as compact as possible, the electrical path lengths between the ports to which the instruments are connected and the reference plane become increasingly important above 10MHz, particularly ...
t < 0 - UniMAP Portal
t < 0 - UniMAP Portal

AN2228
AN2228

... The STD1LNK60Z (see Appendix A: STD1LNK60Z-based RCC Circuit Schematics on page 22) has built-in, back-to-back Zener diodes specifically designed to enhance not only the Electrostatic Discharge (ESD) protection capability, but also to allow for possible voltage transients (that may occasionally be a ...
Volts and Amps
Volts and Amps

... B. Wavelength in meters equals frequency in Hertz divided by 300 C. Wavelength in meters equals frequency in megahertz divided by 300 D. Wavelength in meters equals 300 divided by frequency in megahertz ...
MAX798 High-Accuracy Step-Down Controller with Synchronous Rectifier for CPU Power _______________General Description
MAX798 High-Accuracy Step-Down Controller with Synchronous Rectifier for CPU Power _______________General Description

Manual 900 MHz
Manual 900 MHz

experiment 1
experiment 1

... equivalent circuit. Determining response in the load resistance, then becomes easier. The use of Thevenin Theorem is specially very helpful and time saving when we wish to find the response for different values of load resistance. Thevenin Theorem states that current through a load resistance connec ...
Automatic engine RPM control circuit description 2
Automatic engine RPM control circuit description 2

... With Q4 ON and Q3 OFF, C25 is allowed to receive charge from the constant current source comprising of Q2 (BC327), D3 (4148), R39 (3k3), R40 (100k) and P5 (1M). (Required time constant is adjusted by P5) IC10B buffers the voltage on C25 and IC10C inverts it (gain of -1) before it is fed to voltage ...
AN703 Designing DC/DC Converters with the Si9110 Switchmode
AN703 Designing DC/DC Converters with the Si9110 Switchmode

... Figure 12 shows how the power supply efficiency varies with load. Under the low-line condition (VIN = 9 V), the full load efficiency is 77%. At higher input voltages, the conduction losses in the MOSFET and sense resistor are reduced, permitting full-load efficiency to exceed 80%. High efficiency at ...
MC33363A - High Voltage Switching Regulator
MC33363A - High Voltage Switching Regulator

... This 6.5 V output is available for biasing external circuitry. It requires an external bypass capacitor of at least 1.0 mF for stability. ...
MAX3316E–MAX3319E ±15kV ESD-Protected, 2.5V, 1µA, 460kbps, RS-232 Compatible Transceivers ________________General Description
MAX3316E–MAX3319E ±15kV ESD-Protected, 2.5V, 1µA, 460kbps, RS-232 Compatible Transceivers ________________General Description

Voltage profile - Mon`s group Sydney
Voltage profile - Mon`s group Sydney

... Induction and moving coil regulator Ф output = Ф 1 + Ф 2 depending on the position of moving coil. ...
Isolated dc-dc converters with high-output voltage for twta
Isolated dc-dc converters with high-output voltage for twta

... 1) First Stage ([ , ] Fig. 12): Both main switches are conducting and the currents flowing through the primary windings have the same absolute value and opposite direction. Thus, the stores energy. rectifier diodes are blocked and input inductor The resonance between the leakage inductance and the p ...
^ l -vwx l
^ l -vwx l

... frequency with the oscillator frequency generated The present invention relates to an arrange- ` in the receiver and the motor is connected to 25 ment for overcoming the above disadvantages. tune the oscillator frequency to a value which In accordance with the present invention the is a function of ...
LNK64x4-64x8 - Mouser Electronics
LNK64x4-64x8 - Mouser Electronics

... If the primary magnetizing inductance is either too high or low the converter will automatically compensate for this by adjusting the oscillator frequency. Since this controller is designed to operate in discontinuous-conduction mode the output power is directly proportional to the set primary induc ...
construction of car touch intruder alarm
construction of car touch intruder alarm

... resistor possesses only resistance, no capacitor or inductance, but all practical resistors possess some small amount of capacitance or inductance. Usually these are sufficiently small to be negligible. They are constructed from a mixture of carbon of the materials in proportions that give the requi ...
AN-8024 Applying Fairchild Power Switch (FPS ) FSBH-series to Standby Auxiliary Power Supply
AN-8024 Applying Fairchild Power Switch (FPS ) FSBH-series to Standby Auxiliary Power Supply

... advantages and disadvantages. In general, DCM provides better switching conditions for the rectifier diodes, since the diodes are operating at zero current just before becoming reverse biased and the reverse recovery loss is minimized. The transformer size can be reduced using DCM because the averag ...
NE5534, NE5534A
NE5534, NE5534A

< 1 ... 176 177 178 179 180 181 182 183 184 ... 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