• 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
Aalborg Universitet PSD Control Using A Limited Monocycle Precharge Technique
Aalborg Universitet PSD Control Using A Limited Monocycle Precharge Technique

Slides - Agenda INFN
Slides - Agenda INFN

... vertically integrated CMOS technology is almost completed (some work still to be done on DACs for threshold correction) Both MAPS and hybrid pixels can gain significant benefits from going 3D increase in charge collection efficiency immunity from (or reduction of) cross-talk phenomena between digita ...
MAX3355E ±15kV ESD-Protected USB On-the-Go Charge Pump and Comparators in UCSP General Description
MAX3355E ±15kV ESD-Protected USB On-the-Go Charge Pump and Comparators in UCSP General Description

... The MAX3355E integrates a charge pump and comparators to enable a system with an integrated USB onthe-go (OTG) dual-role transceiver to function as a USB OTG dual-role device. USB OTG facilitates the direct connection of peripherals and mobile devices such as PDAs, cellular phones, MP3 players, and ...
PDF Data Sheet Rev. 0
PDF Data Sheet Rev. 0

... and synthesizer provide all the required internal clocks, as well as two external clocks, from a single crystal or clock source. The Tx signal path consists of a 2×/4× low-pass interpolation filter, a 10-bit TxDAC, and a line driver. The transmit path signal bandwidth can be as high as 34 MHz at an ...
T-VER-E50B2 - Onset Computer Corporation
T-VER-E50B2 - Onset Computer Corporation

... environment must control conductive pollution and the possibility of condensation or high humidity. Consider the enclosure, the correct use of ventilation, thermal properties of the equipment, and the relationship with the environment. Installation category: CAT II or CAT III Provide a disconnect de ...
MAX44244/MAX44245/MAX44248 36V, Precision, Low-Power, 90µA, Single/Quad/Dual Op Amps General Description
MAX44244/MAX44245/MAX44248 36V, Precision, Low-Power, 90µA, Single/Quad/Dual Op Amps General Description

... provide ultra-precision, low-noise, zero-drift single/quad/ dual operational amplifiers featuring very low-power operation with a wide supply range. The devices incorporate a patented auto-zero circuit that constantly measures and compensates the input offset to eliminate drift over time and tempera ...
Siemens SIRIUS Relays
Siemens SIRIUS Relays

... with coupling, control and monitoring relays, the search for various suppliers becomes time-consuming. This is now a thing of the past because we have all of these products in just one family: SIRIUS®. This makes it easy for you to select the optimum product and guarantees you a top price-performanc ...
1-Seyezhai- investigation of half-bridge llc resonant
1-Seyezhai- investigation of half-bridge llc resonant

... Mode-2 begins when resonant inductor current ILr becomes positive. Since Q1 is turned on during mode 1, current will flow through MOSFET Q1. During this mode, output rectifier diode D1 conduct. The transformer voltage is clamped at Vo. Lm is linearly charged with output voltage, so it doesn't partic ...
LT6411
LT6411

Basic Troubleshooting Methods for HID Fixtures
Basic Troubleshooting Methods for HID Fixtures

ADADC80 数据手册DataSheet 下载
ADADC80 数据手册DataSheet 下载

... The internal buried Zener reference is laser trimmed to 6.3 V. The reference voltage is available externally and can supply up to 1.5 mA beyond the current required for the reference and bipolar offset. The scaling resistors are included on the monolithic DAC for exceptional thermal tracking. The AD ...
SOT-23 Plastic-Encapsulate Transistors CJ3420
SOT-23 Plastic-Encapsulate Transistors CJ3420

... JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD ...
"AGND" and "DGND"
"AGND" and "DGND"

... It is true that this arrangement may inject a small amount of digital noise onto the analog ground plane. These currents should be quite small, and can be minimized by ensuring that the converter output does not drive a large fanout (they normally can't, by design). Minimizing the fanout on the conv ...
Basic Troubleshooting Methods for HID Fixtures
Basic Troubleshooting Methods for HID Fixtures

AN10393 BISS transistors and MEGA Schottky rectifiers
AN10393 BISS transistors and MEGA Schottky rectifiers

... These improved characteristics of the mesh-emitter transistor PBSS4240V are the result of the combination and optimization of all parameters that were mentioned in the previous paragraph. For example, the voltage drop at IC = 0.5 A is only 80 mV for the PBSS4240V, compared to 200 mV for the BC817 (F ...
Layout Considerations for Lead
Layout Considerations for Lead

... get other output voltages not listed below. With the resistors shown below, if all 4 jumper positions are populated, the output voltage will be approximately 3.7V. Note that for any VOUT higher than 3.3V, the output capacitors need to be changed to 2 x 22uF/0805. ...
texas analog center of excellence
texas analog center of excellence

... (Moon,  Oregon  SU)  (Left),  3-­‐input  nand  gate  used  to  implement  comparators  in  the  A DC  (Center),  10-­‐MHz   blocker  robust  transimpedance  amplifier.  Tolerant  to  ±10mA  single  tones  at  ≥50MHz,  and  to  ±9mA  tones ...
DEVINE Spec Submittal
DEVINE Spec Submittal

... p. Controls shall incorporate power-failure memory. Should power be interrupted and subsequently returned, the lights or fans will come back on to the same levels set prior to the power interruption. Restoration to some other default level is not acceptable. q. Controls shall not be susceptible to d ...
TPS70302 数据资料 dataSheet 下载
TPS70302 数据资料 dataSheet 下载

... (that is, logic high) after a 120 ms delay when all three of the following conditions are met. First, VIN1 must be above the undervoltage condition. Second, the manual reset (MR) pin must be in a high impedance state. Third, VOUT2 must be above approximately 95% of its regulated voltage. To monitor ...
MAX4855 0.75 Integrated Comparators , Dual SPDT Audio Switch with
MAX4855 0.75 Integrated Comparators , Dual SPDT Audio Switch with

... low on-resistance (0.75Ω) with a +3V supply making it ideal for audio switching applications in portable devices. The device also integrates two internal comparators that can be used for headphone detection or mute/send key functions. The MAX4855 is available in the space-saving (3mm x 3mm), 16-pin ...
Part 8 (PPT File) - DESE, IISc Bangalore
Part 8 (PPT File) - DESE, IISc Bangalore

... part of the A-phase and B-phase winding group (A1A2 & B1B2) has a voltage of Vdc/4 across it and the other phase group has zero voltage across it Similarly for switching state 20-1 it can be observed that, one group of windings (i.e. A1-A2, B1-B2 and C1-C2) is fed from a voltage vector (100) and the ...
AM1600 Service Information
AM1600 Service Information

NorMax® - Norelco Oy
NorMax® - Norelco Oy

Section 4 Thyristor General Elec Product
Section 4 Thyristor General Elec Product

AP4340S Datasheet - Diodes Incorporated
AP4340S Datasheet - Diodes Incorporated

... B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regul ...
< 1 ... 192 193 194 195 196 197 198 199 200 ... 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