• 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
(Conventional-Current-Version)-8th-Edition-Floyd-Test-Bank
(Conventional-Current-Version)-8th-Edition-Floyd-Test-Bank

PDF/ENGLISH FLYER MANUELA
PDF/ENGLISH FLYER MANUELA

... 499 Liter / 17.6 Cu. ft. 616 Liter / 21.7 Cu. ft. 732 Liter / 25.8 Cu. ft. 220 Liter / 7.8 Cu. ft. ...
Programmable AC Current Transducer
Programmable AC Current Transducer

... Accuracy is presented as percentage of range of the measurand’s nominal value, except when it is stated as an absolute value. Presented accuracy is valid only for a full output range. In case if used output range is less than full output range (zoom-characteristics) see INTRINSIC ERROR on page 5. De ...
Common Base, Common Emitter, and Common Collector
Common Base, Common Emitter, and Common Collector

... It was expected that the measured gain of the Common Collector Amplifier would be approximately unity. The circuit in Figure 9.11 had a voltage gain of 0.86. When a resistive load was added to the circuit the voltage gain became 0.87. Adding a load to the circuit had no effect on the gain. The circu ...
RF Power Detector MAX2209 General Description Features
RF Power Detector MAX2209 General Description Features

... cdma2000M, and high-speed downlink/uplink packet access. The MAX2209 accepts an RF signal at the input, and outputs a temperature-independent voltage related to the input signal voltage. The output voltage expressed in dBV is proportional to the input power expressed in dBm. The device has a detecti ...
application specific power supplies
application specific power supplies

... Amplifiers with BTL outputs are popular because they do not require DC blocking caps even when operating with a single positive power supply. DC blocking caps limit the low-frequency response of the amplifier and can be quite large. BTL amplifiers have another advantage over amplifiers with single-e ...
Datasheet - SPD120W 3ph.qxd:_
Datasheet - SPD120W 3ph.qxd:_

... Can also be used as single phase 480VAC Installation on DIN rail 7.5 or 15mm PFC as standard High efficiency up to 88% Power ready output Compact dimensions UL, cUL listed and TUV/CE ...
MB88153A MB88153A
MB88153A MB88153A

... A latch-up can occur if, on this device, (a) a voltage higher than VDD or a voltage lower than VSS is applied to an input or output pin or (b) a voltage higher than the rating is applied between VDD pin and VSS pin. The latch-up, if it occurs, significantly increases the power supply current and may ...
Datasheet
Datasheet

High Stability, Low Noise, Push-Push VFO
High Stability, Low Noise, Push-Push VFO

... half of the RF cycle when is not oscillating, and consequently the effective loaded-Q of the circuit is higher than in single-ended counterparts. Increasing the Loaded-Q improves the phase noise, improves long-term frequency stability versus temperature variations, reduces supply pushing, and reduce ...
Distributed Power Systems ELCT 908
Distributed Power Systems ELCT 908

... The no load current ranges from 1% to 3% of the full load current. Therefore, the circuit can be simplified to circuit (b). ...
Comparison of advantages and disadvantages of electronic
Comparison of advantages and disadvantages of electronic

IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

AB04404170177
AB04404170177

... supply trough a voltage converter. B. Transient Voltage Surge suppressors (TVSS) TVSS are used as interface between the power source and sensitive loads, so that the transient voltage is clamped by the TVSS before it reaches the load. TVSSs usually contain a component with a nonlinear resistance (a ...
05 May 2014 Published LL Summary
05 May 2014 Published LL Summary

... • Significant system disturbances caused by vendor performed work in stations without method to ensure work quality • Generation facility experienced a trip due to an internal fault in a SF6 gas breaker • Breaker trip interrupted power to the auxiliary transformer • Fast bus transfer scheme isolates ...
ZLDO500 • 5.0 VOLT ULTRA LOW DROPOUT REGULATOR
ZLDO500 • 5.0 VOLT ULTRA LOW DROPOUT REGULATOR

... switch mode converters is that only one output can be used in the feedback control loop of the switching regulator. Thus only one output is fully regulated. All other outputs are prone to tracking errors that occur if the load on any output change significantly. By ensuring close coupling of all tra ...
PDF
PDF

... currents of induction motor. The commutation state of the converter in the subsequent sampling time according to an optimization algorithm given by a simple cost functional and the discrete system model and the control goals are regulation of output current according to an arbitrary reference and al ...
Letter - AEGIS Shaft Grounding
Letter - AEGIS Shaft Grounding

... should incorporate AEGIS® shaft grounding as a standard. Refer to AEGIS® Bearing Protection Handbook for Best Practices. AEGIS® Bearing Protection Rings are Manufactured in the USA ...
AL125UL • AL125ULX • AL125ULP • AL125ULE Access
AL125UL • AL125ULX • AL125ULP • AL125ULE Access

... 4. Set the desired DC output voltage by setting switch SW2 (Fig. 1a - Application Diagram, pg. 3) to the appropriate position (Power Supply Output Specifications Table, pg. 1). 5. Connect Fail-Safe locking devices to the terminals marked [COM-- and LOCK+]. Connect Fail-Secure locking devices to ...
AV110T Service Manual
AV110T Service Manual

... Signal flow chart of scene mode AV110T has a special function that switching between 5 scene modes is available without karaoke, which is fulfilled through part of karaoke. When pin 9/10 of N205 are of high level, sampled L/R/C signals are outputted via pin 3 through N205 gating. After amplification ...
Gyraf Audio G14
Gyraf Audio G14

... can output some +15 to +20dBu. For reference and if you don't know your absolute analogue output levels, read the all-clip band (all other bands bypassed): With an input tone of 1KHz, the large meter(1) shows 0.5mA shows at +10dBu input when set at Range(5)=White, Level(3)=full (ccw) and threshold a ...
Diode Lasers - Price
Diode Lasers - Price

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

... The highly integrated FSBH-series consists of an integrated current mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V SenseFET. It is specifically designed for high-performance offline Switch-Mode Power Supplies (SMPS) with minimal external components. ...


PP101007-a - Indico
PP101007-a - Indico

... semiconductors are in the off-state (i.e. zero current in the load). Only the triggers for the switched elements of the power supply are inhibited. ...
< 1 ... 802 803 804 805 806 807 808 809 810 ... 1202 >

Pulse-width modulation



Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report