• 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
EM8559A
EM8559A

... EM8559A Soft Start The EM8559A has an internal soft-start circuit that increases cycle-by-cycle current limit comparator inverting input voltage slowly after it starts. The typical soft-start time is 3.5mS. The pulse width to the power MOSFET is progressively increased to establish the correct work ...
lec4 - CS
lec4 - CS

... We used (4.4) to express the voltage v(t’) by the characteristic of the capacitor, i.e. function vˆ () in terms of the integration variable q Let us assume that the capacitor is initially uncharged; that is q(t0)=0 It is natural to use the uncharged state of the capacitor as the state correspondin ...
TPS61175 SEPIC Design Application Report ...................................................................................... Design Example
TPS61175 SEPIC Design Application Report ...................................................................................... Design Example

... The loop bandwidth assumption of 5 kHz may have to be modified later. The designer selected C2 = 2 × 22 mF, 50-V output capacitors instead of one 47-mF capacitor because the resonance frequency of most 47-mF capacitors is above the 1-MHz switching frequency. If capacitors with higher ESRs than those ...
MAX8867/MAX8868 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 _______________General Description
MAX8867/MAX8868 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 _______________General Description

... regulators operate from a 2.5V to 6.5V input and deliver up to 150mA. Typical output noise for these devices is just 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the range of 2.5V to 5.0V, in 100mV increments. The MAX8867 and MAX8868 are pin-compat ...
Electricity Gone Wild
Electricity Gone Wild

... There are a bunch of track runners running around a track, they start out at a Gatorade stand gives them energy. This represents the battery. The track represents the wires. The runners represent electrons and their urge to finish the race and get more Gatorade represents the current. They burn all ...
DRV2700
DRV2700

... TI Designs: Piezo Sounder Reference Design coming Summer 2015 ...
BDTIC www.BDTIC.com/infineon Driving Mid Power LEDs from
BDTIC www.BDTIC.com/infineon Driving Mid Power LEDs from

CR26645650
CR26645650

MP020-5 - Monolithic Power System
MP020-5 - Monolithic Power System

Data Sheet
Data Sheet

... voltages above about 6V. The current in this zener must be limited to less than 100 µA. A resistor of 470 kΩ will limit the current to a safe value for input voltages as high 42V. Smaller values of resistor can be used at lower input voltages. The LM22677 also incorporates an input under voltage loc ...
CO34543549
CO34543549

3B Suppose two identically shaped rings are used in the demo. Ring
3B Suppose two identically shaped rings are used in the demo. Ring

AN3410
AN3410

... market. It utilizes ST’s L6564 power factor controller in an unconventional circuit to regulate the input power to a step-down switching regulator. The circuit also compensates for variations in LED voltage drop, to maintain the average output current in a tight band over a wide range of line voltag ...
The Time Constant of an RC Circuit
The Time Constant of an RC Circuit

... Figure 3: The left-hand figure is the circuit used to measure the time constant of an RC circuit, while the right-hand figure shows the Oscilloscope traces. If the period of the square wave Ts is much less than the time constant τ = RC (Ts  τ ), then the capacitor will start discharging before it h ...
Aalborg Universitet Applied to Parallel UPS Systems
Aalborg Universitet Applied to Parallel UPS Systems

Analog and Digital Meters
Analog and Digital Meters

... Voltmeters measure voltage or voltage drop in a circuit. Voltage drop can be used to locate excessive resistance in the circuit which could cause poor performance or improper operation. Lack of voltage at a given point may indicate an open circuit or ground. On the other hand, low voltage or high vo ...
FEATURES GENERAL DESCRIPTION The ADP194CB-EVALZ is used to demonstrate the function-
FEATURES GENERAL DESCRIPTION The ADP194CB-EVALZ is used to demonstrate the function-

... differential divided by load current. The voltmeter reading divided by the load current value gives the equivalent RDSON value. For more accurate measurements, a second voltmeter can be used to monitor the input voltage across the input capacitor. The input supply voltage may need to be adjusted to ...
AM-250 Digital Multimeter Product Manual
AM-250 Digital Multimeter Product Manual

... frequency, current and temperature; It is an electronic measuring instrument that combines several measurement functions in one unit. AM-250 multimeter is a portable hand-held device useful for basic fault finding and field service work or a bench instrument which can measure to a very high degree o ...
Bipolar Transistor PNP 160V, 1.5A TP/TP-FA
Bipolar Transistor PNP 160V, 1.5A TP/TP-FA

... "standard application", intended for the use as general electronics equipment. The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportati ...
Wheatstone_Bridge
Wheatstone_Bridge

... Note that this additional plot (as well as the trace expression) that you added for VBA will disappear if you rerun the simulation. ...
TS30011/12/13
TS30011/12/13

STS11NF30L
STS11NF30L

... Figure 16. Unclamped Inductive load test switching and diode recovery times circuit ...
GX3412721276
GX3412721276

... mode [5] in Texas Instrument datasheet is a switching method used to improve the efficiency at light loads. As the VR operates with PFM at light load currents and PWM at heavier load currents, this allows the VR to maintain an efficiency of almost greater than 90% for a wide range of load. PMIC has ...
Examples of Transient RC and RL Circuits. The Series RLC Circuit
Examples of Transient RC and RL Circuits. The Series RLC Circuit

... When the switch is opened, the current path is effectively broken and thus the time rate of change of the current becomes arbitrarily large. Since the voltage is proportional to di / dt , the voltage developed across the inductor could become very large. As an example, let’s consider a system with a ...
4. Anti-Interference Equipment – Input Filters
4. Anti-Interference Equipment – Input Filters

... To limit input current spectrum, an input reactor may be used. The reactor also extends conducting time of rectifier diodes. Thanks to extended conducting time, the loading of the diodes gets lower. The reactor is necessary in case of high short-circuit power of the mains (at least 10 times converte ...
< 1 ... 412 413 414 415 416 417 418 419 420 ... 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