• Study Resource
  • Explore Categories
    • 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
v R + v C + v L
v R + v C + v L

... iC = ωCVC cos (ωt + π/2) The consequence of this is that the capacitor voltage and current do not oscillate in phase. The current leads voltage by π/2 rads, or by T/4. ...
BITX40 with Raduino - tips and mods
BITX40 with Raduino - tips and mods

MeasurementsG11ES
MeasurementsG11ES

Combined Series and Parallel Circuits
Combined Series and Parallel Circuits

... You have now found all the voltages across all the resistors, and are ready to go on to the current measurements. Caution when using the current measurement terminals on the multimeter (“A” or ” µAmA”). DO NOT apply the meter leads across any voltage source without a series resistance! Applying live ...
BUX87
BUX87

... STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of Ameri ...
Short circuit test
Short circuit test

... Ans the question no 05 Modification in short circuit test: The test is conducted on the high-voltage (HV) side of the transformer where the low-voltage (LV) side or the secondary is short circuited. The supply voltage required to circulate rated current through the transformer is usually very small ...
Thevenin Theorem
Thevenin Theorem

... 2. The theorem was developed in 1883 by Leon Thevenin, a French telegraph engineer. 3. The circuit to the left of the terminals a and b is known as the Thevenin Equivalent Circuit. B. How to draw Vth and Rth 1. Thevenin voltage Vth is the open-circuit voltage at the terminals. Method: Find the volta ...
Lab 3 — Prototyping with Microcontrollers and Sensors (Section E2
Lab 3 — Prototyping with Microcontrollers and Sensors (Section E2

... read the sensor every five seconds. Sketch a flowchart and have it verified by a TA before writing the program. Don’t forget to use an analog pin (Pin A0), convert the voltage reading and then print it out! ...
BeoGram 4002 repair
BeoGram 4002 repair

... 10. 33 / 45 Speed Indicator LED upgrade The 33 and 45 indicator lamps heat up, and deform their plastic housings. I am a fan of LED's, primarily because of their long-life, cool operation, and highly-directional intensity, even though the associated resistor warms up while killing excess voltage. A ...
B61089QDR, Dual port negative voltage tracking SLIC protector
B61089QDR, Dual port negative voltage tracking SLIC protector

... of ITU K20/21. For GR-1089 Port Type 3 and Enhanced level of ITU K20/21, the series resistor value may need to be increased. The TeleLink fuse complies with both GR-1089 intra-building and inter-building requirements and both Basic and Enhanced levels of the ITU Recommendations. ...
Using an ammeter
Using an ammeter

... in the circuit so that the wire connected to it is closest to the negative terminal of the battery. Closest is decided by following the wire directly from the black terminal through any other devices like light bulbs to the negative terminal of the battery. The red terminal is wired closest (along t ...
3STR1630
3STR1630

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any ...
Transient Voltage Suppression Diode Application Notes
Transient Voltage Suppression Diode Application Notes

... determined. For better performance, the device should be placed as close to the signal input as possible and ahead of any other component. Due to the high current associated with an ESD event, it is recommended to use a “0-stub” pad design (pad directly on the signal/data line and second pad directl ...
Exam 2 Study Problems
Exam 2 Study Problems

開啟檔案
開啟檔案

... 期中報告 授課教授:秦純 教授 班級:碩研電機一甲 姓名:吳旻鴻 學號:MA020127 ...
HV Vacuum circuit-breakers: Challenges of capacitive load
HV Vacuum circuit-breakers: Challenges of capacitive load

Checking voltage- frequency ratio on variable- speed drives
Checking voltage- frequency ratio on variable- speed drives

Forward Converter - Muhammad Kumail Haider
Forward Converter - Muhammad Kumail Haider

ADC
ADC

Voltage-controlled Oscillators (VCO), Phase Locked Loop, and
Voltage-controlled Oscillators (VCO), Phase Locked Loop, and

... control voltage. VCOs are used in many communication applications such as frequency modulation, in the phase locked loop (PLL) for signal tracking and FM demodulation. There are many ways to design an electronic circuit for a VCO. One method uses a special diode called Varactor. This diode has capac ...
Early effect
Early effect

Exp-10 - WordPress.com
Exp-10 - WordPress.com

... means of the voltage divider made up of three series resistors (R). These reference voltages are required to control the timing. The timing can be controlled externally by applying voltage to the control voltage terminal. Pin configuration: ...
Transforming – Revision Pack (P6) Transformer Design: Step
Transforming – Revision Pack (P6) Transformer Design: Step

SX440 AUTOMATIC VOLTAGE REGULATOR (AVR)
SX440 AUTOMATIC VOLTAGE REGULATOR (AVR)

... In addition to regulating the generator voltage,the AVR circuitry includes under-speed and sensing loss protection features. Excitation power is derived directly from the generator terminals. Positive voltage build up from residual levels is ensured by the use of efficient semiconductors in the powe ...
No Slide Title
No Slide Title

... • Electromagnetic induction – The action caused when two electrically isolated coils are placed next to each other and an AC voltage is put across one coil, resulting in a changing magnetic field which induces a voltage into the second coil.. – The device used to create this action is called a tran ...
< 1 ... 655 656 657 658 659 660 661 662 663 ... 947 >

Electrical ballast



An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report