• 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
3 - KFUPM Faculty List
3 - KFUPM Faculty List

... Fig. 1 is the circuit model for the experiment. SW1 is a switch that is used to energize the system. When closed it provides 7.2 kV RMS to the insulators being tested. R and jX represent the resistance and reactance of the distribution line feeding the circuit. These components can be neglected beca ...
Appendix A: Experimental Apparatus
Appendix A: Experimental Apparatus

DSP BASED POWER ANALYZING SYSTEM FOR ONSITE MEASUREMENTS W.M.S. Wijesinghe and
DSP BASED POWER ANALYZING SYSTEM FOR ONSITE MEASUREMENTS W.M.S. Wijesinghe and

... systems. A high-precision voltage transformer (VT) can be used as a divider to obtain high stability of the voltage signal, and the CSS setup would be replaced by a current transformer (CT). The replacement is very useful, in particular for reducing the size of the traveling standard, and it is impo ...
Physics 15b PSI Week 3: Current, Resistance, Ohm`s Law 1
Physics 15b PSI Week 3: Current, Resistance, Ohm`s Law 1

... with a metallic heating element. When the heater is first turned on, the heating element is cold and the resistance of the heater is Rcold. If a constant voltage V is applied across the heater, what is the current that flows through the cold heating element? If the voltage across the heater remains ...
Design Optimization of Bulk Capacitor
Design Optimization of Bulk Capacitor

... Bulk Capacitor – Definition / Function Definition Bulk Capacitor is combination of capacitors which have different design purpose. It is called as DC Link, since basic function is filtering of DC flow. Y-Capacitor, X Capacitor and bus bars are located inside Power Inverter under certain Purpose. ...
current electricity
current electricity

... • When charge is to flow, like a river, the electron does not move, but he pushes his neighbor, who happens to be an a couch watching TV • This process is repeated for the length of the wire ...
lecture 1 power quality
lecture 1 power quality

... electronic converter ‘drive’, which control the motor’s starting current to a reasonable level. Some lower cost types of motor use series capacitors or resistors to reduce the starting current. These components are then switched out once the motor’s rated speed has been reached. Autotransformers are ...
UCC2837 数据资料 dataSheet 下载
UCC2837 数据资料 dataSheet 下载

... The transient performance of a linear regulator built using the UCC3837 can be predicted by understanding the dynamics of the transient event. Consider a load transient on the application circuit of Fig. 1, where the output current steps from a low value to a high value. Initially, the output voltag ...
Good ground connection
Good ground connection

Limited Availability Product
Limited Availability Product

Zener Diode
Zener Diode

trace elliot
trace elliot

Circuit Symbols of Electronic Components
Circuit Symbols of Electronic Components

... and step down (decrease) AC voltages. Energy is transferred between the coils by the magnetic field in the core. There is no electrical connection between the coils. ...
Accidents in home and environment
Accidents in home and environment

... • Electrical burns can be usefully divided into; • Flash burns – typically superficial • Contact burns – may be negligible surface burning but deeper tissue damage due to the conduction of electricity through tissue plains. These burns can be further divided into high tension or voltage and low tens ...
Copyright © 2004 IEEE. Reprinted from IEEE International Symposium on
Copyright © 2004 IEEE. Reprinted from IEEE International Symposium on

... antennae in the presence of RFI, which is either radiated from powerful radio transmitters, wireless network devices, mobile phones and PDAs, or intentionally generated for malicious reasons. These unintentional antennae can serve to couple RF noise into the core circuit [1, 2, 3]. RFI that is coupl ...
EMI Filter Design
EMI Filter Design

... C3 must be a costly regulatory-approved part. We will also try to operate with only a common-mode choke in the circuit. The part is needed anyway for common-mode noise, and its leakage inductance can be exploited. The example part has a two-section bobbin, which typically has a lower differential in ...
Electricity questions: Monitoring and measuring a.c.
Electricity questions: Monitoring and measuring a.c.

... Describe what happens to the reading on the ammeter from the instant the switch is closed. How can you tell when the capacitor is fully charged? What would be a suitable range for the ammeter? The 10 k Ω resistor is now replaced by a larger resistor and the investigation repeated. What is the maximu ...
operational amplifiers
operational amplifiers

... from a single supply over a wide range of voltages. Operation from split supplies is also possible as long as the difference between the two supplies is 3 V to 30 V and pin 7 is at least 1.5 V more positive than the input common-mode voltage. The low supply current is independent of the magnitude of ...
BDTIC
BDTIC

... The TLE 4917 has 3 ground pins. From a mechanical point of view all ground pins should be connected to ground. Shortest wires should be used to avoid ground loops. If there is a need to reduce the number of used ground-pins any ground-pin combination may me used. Furthermore it is possible using onl ...
C48031522
C48031522

... literature. Accompanying this development is the equally rapid identification of application areas, where power converters can contribute positively toward raising the overall system quality [1], [2]. In most cases, the identified applications would require the power converters to be connected in se ...
HFSR Soft Starter
HFSR Soft Starter

CircuitI_exp021411060340
CircuitI_exp021411060340

... current controlled current source (CCCS). Figure 11 shows the PSPICE diagrams of these dependent sources. Each diagram is divided into an ammeter at the left side and a source (voltage or current) at the right side. The ammeter must be connected in series with the required current that is to be meas ...
2. Proposed Control Strategy
2. Proposed Control Strategy

... DG with proposed control method can share same power of load. What is more, when load changes, compared with the conventional droop control method, it has smooth transition process. Even if line impendence is different between each DG, DG still can realize accurate allocation of reactive power that ...
instituto tecnologico de costa rica
instituto tecnologico de costa rica

... (dVJdT = 86.17pV/K), and to buffer the output. This can bc readily done, as will be seen in the Applications section. For multiplication and division, it is necessary to add a voltage representing the logarithm of V, or ly and take the antilogarithm, or exponential. This operation is performed in th ...
Y9 Physics 2 - Stewards Academy
Y9 Physics 2 - Stewards Academy

... Analyses and interprets I–V graphs for a fixed resistor. Describes applications of diodes, thermistors and LDRs and explains their uses. Uses I–V graphs to determine if the characteristics of components are ohmic or non-ohmic. Explains the difference between direct and alternating potential differen ...
< 1 ... 501 502 503 504 505 506 507 508 509 ... 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