• 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
PUB-NP-092 Please describe what Newfoundland Power’s capabilities in voltage reduction are: Q.
PUB-NP-092 Please describe what Newfoundland Power’s capabilities in voltage reduction are: Q.

... Newfoundland Power exercises its voltage reduction capabilities to be within the voltage variation limits of CSA Standard CAN3-C235-83 to ensure acceptable voltage levels are maintained with customers. The level of voltage reduction and the number of steps utilized to achieve reduced voltage operati ...
PDF
PDF

... Resistance-type heaters will be provided in the interrupter and operating mechanism cabinets, to prevent moisture condensation. The breaker will be shipped mounted in a substation mounting frame. The mounting frame extension will have a ground pad which will accommodate two No. 2/0 to 250 MCM condu ...
Chapter 30 Inductors and Self Inductance
Chapter 30 Inductors and Self Inductance

SDA-3000 数据资料DataSheet下载
SDA-3000 数据资料DataSheet下载

... Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Abs ...
Low Voltage Power Distribution LVPD at Balloon-EUSO
Low Voltage Power Distribution LVPD at Balloon-EUSO

... -PDMLVPS and DPLVPS shall provide isolation interface between 28V bus PWP and all subsystems. - The isolation stage will comprise isolated DDCUs with efficiencies higher than 80%. -The regulation stage shall be performed directly at load (as close as possible) for best performance. -The regulation s ...
Question 1 (a) Gas ionization processes a. Ionization by simple
Question 1 (a) Gas ionization processes a. Ionization by simple

... • degradation of the insulation must be caused by the sparks. The conducting film is usually moisture from the atmosphere absorbed by some form of contamination. Moisture is not essential as a conducting path can also arise from metal dust due to wear and tear of moving parts. Sparks are drawn betwe ...
INSTRUCTION MANUAL FOR VOLTAGE
INSTRUCTION MANUAL FOR VOLTAGE

... The AVC63-2.5 Voltage Regulators are designed for use on 50/60 Hz brushless generators. The regulator includes frequency compensation, a solid-state build-up circuit, EMI filtering, and remote adjust capability. Warning ...
MAX3311E/MAX3313E ±15kV ESD-Protected, 460kbps, 1µA, RS-232-Compatible Transceivers in µMAX General Description
MAX3311E/MAX3313E ±15kV ESD-Protected, 460kbps, 1µA, RS-232-Compatible Transceivers in µMAX General Description

... value of C2 and CBYPASS to maintain the proper ratios (C1 to the other capacitors). When using the minimum 0.1µF capacitors, make sure the capacitance does not degrade excessively with temperature. If in doubt, use capacitors with a larger nominal value. The capacitor’s equivalent series resistance ...
JH2215651570
JH2215651570

Preliminary Work
Preliminary Work

... a. Connect your circuit to the function generator. b. Connect your oscilloscope on both the function generator and the load resistor (R2). 3. Measure the AC operation of your circuit. a. Set the function generator to be sinusoidal with amplitude of 1V. (This would be a peak to peak voltage of 2Vpp.) ...
MAX3386E 3.0V, ±25kV ESD-Protected RS-232 Transceiver for PDAs and Cell Phones General Description
MAX3386E 3.0V, ±25kV ESD-Protected RS-232 Transceiver for PDAs and Cell Phones General Description

SN_presentation_General_Nov_10_2009 - Indico
SN_presentation_General_Nov_10_2009 - Indico

... smoothen out the pulse. – Higher capacitance in the Switch capacitors to reduce the droop. – Iron core of transformer – Larger Iron core in the transformer to prevent saturation of the iron during the long pulse. – Relatively low voltage makes the transformer smaller. – No need for low inductance ma ...
Influence of Voltage Drop to Electric Drive with Induction
Influence of Voltage Drop to Electric Drive with Induction

... from the voltage drop of the power supply of the electric drive with induction motor with Voltage-Fed inverter. There are reflected opportune control algorithms for the quickly to change of working regime from full load in regime “drive” to “no-load” regime (to achieve for approximately constant val ...
Ohm*s Law - edts580multimedu
Ohm*s Law - edts580multimedu

... A. Current (I) equals voltage (E) multiplied by resistance (R) ...
Document
Document

... inductance does not depend upon the radius of the wire itself and increasing this radius decreases the resistance, I could easily create another coil of similar inductance and less resistance by winding a thicker wire (with greater radius and lower resistance) of the same material around the same co ...
Voltage Fluctuation Impacts (T. McDermott, Sep 2009)
Voltage Fluctuation Impacts (T. McDermott, Sep 2009)

... Voltage Fluctuation Impacts (T. McDermott, Sep 2009) Any type of distributed generation can produce voltage fluctuations on the electric power system. For example, photovoltaic power output can drop from 100% to 20% of nameplate in less than one minute, and wind power output of a single turbine can ...
a possible water depth measuring system using ultrasonic wave
a possible water depth measuring system using ultrasonic wave

... International Journal of Advances in Science Engineering and Technology, ISSN: 2321-9009 ...
Voltage Smoothing with a Capacitor - Scholar Commons
Voltage Smoothing with a Capacitor - Scholar Commons

... Abstract. A rectifier is an electrical circuit that converts alternating current to direct current, e.g., a half wave rectifier removes lower valleys of the AC voltage wave. If a capacitor is placed in parallel with a half wave rectifier, the transition from voltage peak to peak is smoothed to close ...
Filter Circuits
Filter Circuits

An Improved VFO Driver Amp for Tube Rigs
An Improved VFO Driver Amp for Tube Rigs

Slide 1
Slide 1

MS WORD
MS WORD

... cells vary in their properties such as leakage across the membrane and axial resistance. Some cells do not generate action potentials. However, an action potential is produced when a signal must be transmitted over a few millimeters because passive electrical properties of cells attenuate signals ov ...
SP Valves and Coil Operating Parameters
SP Valves and Coil Operating Parameters

... In order to maintain maximum flow at high temperatures, it is important to know the actual applied voltage to the coil including any voltage drop across the controller. Generally, on engine-driven equipment where alternator voltage is several volts above battery voltage, a coil rated at nominal volt ...
PSpice - Time Domain Analysis
PSpice - Time Domain Analysis

... double click on the inductor and set the property named “IC” ≡ initial condition = 40mA. Step 3: Simulate the circuit using PSpice. Edit the Simulation to be “Time Domain (Transient)”.The simulation starts at time zero and ends at the "Run to time". Specify the "Run to time" as 6τRL = 150 µs and run ...
Electro Mechanical System
Electro Mechanical System

< 1 ... 256 257 258 259 260 261 262 263 264 ... 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