• 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
Cyclic ADC with Programmable Resolution and Bias Current
Cyclic ADC with Programmable Resolution and Bias Current

... II. GENERAL DESCRIPTION The general conversion scheme is presented in Fig. 1. When the conversion process begins the input signal is sampled, afterwards the input voltage value is compared to a set of pre defined references. For an ADC without redundancy the referred comparison allows the circuitry ...
Pulse Input Adapter (S-UCx
Pulse Input Adapter (S-UCx

... station from logging and insert the adapter’s modular jack into an available smart sensor port on the station. See the station manual for details on operating stations with smart sensors. ...
LT8608 - 42V, 1.5A Synchronous Step-Down
LT8608 - 42V, 1.5A Synchronous Step-Down

... can be floated to use pulse-skipping mode. If a clock is applied to the SYNC pin the part will synchronize to an external clock frequency and operate in pulse-skipping mode. While in pulse-skipping mode the oscillator operates continuously and positive SW transitions are aligned to the clock. During ...
A unique, low- voltage, source- coupled J-FET VCO
A unique, low- voltage, source- coupled J-FET VCO

... value of the feedback capacitor. If the shunt capacitor is required, attention should be paid to the fact that both the feedback capacitor and the shunt capacitor are connected in series to ground. And the series capacitance of these two capacitors is directly connected, in parallel, to the resonant ...
Cyclic voltammetry
Cyclic voltammetry

... Three analog filters are offered: 50 kHz, 1 kHz and 5 Hz. Select the 5Hz-filter to remove the aliasing from external perturbation (50 or 60 Hz depending on the country). ...
EL DIABLO 60 Owners Manual
EL DIABLO 60 Owners Manual

... Pentode/Triode Background Information – The native mode of virtually all power tubes in guitar amplification is the power pentode. In a conventional pentode topology fixed bias amplifier, the screen grid connects to the screen supply via screen resistors and the screen potential varies (somewhat) w ...
Mystery Motor Data Sheet - Northwestern Mechatronics Wiki
Mystery Motor Data Sheet - Northwestern Mechatronics Wiki

... Characterizing a Brushed DC Motor Below are some ideas for characterizing a motor using mostly your nuScope, multimeter, encoder (or any way to measure the motor speed), and resistors and capacitors. There is more than one way to measure most of these motor parameters. Feel free to come up with you ...
A New N-Way Power Divider/Combiner Suitable for High
A New N-Way Power Divider/Combiner Suitable for High

... solutions ...
Automatic generation control of a wind farm with variable speed
Automatic generation control of a wind farm with variable speed

... a power control loop, which controls wind turbine output by acting on the pitch angle. When no power reference is given from the supervisory control system, power reference is set up at its rated value. Bellow rated wind speed, a negative power error is achieved, and the controller output (reference ...
Document
Document

Power Amplifier (Class A) - City University of Hong Kong
Power Amplifier (Class A) - City University of Hong Kong

... power, usually to a low resistance load. • Typical load values range from 300W (for transmission antennas) to 8W (for audio speaker). • Although these load values do not cover every possibility, they do illustrate the fact that power amplifiers usually drive lowresistance loads. • Typical output pow ...
0508 - cired
0508 - cired

... - Reduction of the voltage range which can be used for additional DG integration. While the first aspect can be validated easily by evaluating the grid measurement data, the second aspect is more difficult to evaluate: Either the voltage situation in the CVCU controlled state or in the conventionall ...
This article appeared in a journal published by Elsevier. The... copy is furnished to the author for internal non-commercial research
This article appeared in a journal published by Elsevier. The... copy is furnished to the author for internal non-commercial research

... for comparison with the desired power. The DC voltage on the load side is sampled and fed back to the DC load voltage regulator located in the DAQ and control system. The PWM signals generated from ...
Comparative Analysis Of Current Control Methods For Modular
Comparative Analysis Of Current Control Methods For Modular

... applications by Dr. Lescinar in [1]. The MMC is a three-phase converter composed of low voltage semiconductor valves that can be manipulated to behave like controlled voltage sources in medium and high voltage applications. The MMC is a scalable technology with many advantages over more conventional ...
FPD3000SOT89CE LOW-NOISE HIGH-LINEARITY PACKAGED pHEMT Features
FPD3000SOT89CE LOW-NOISE HIGH-LINEARITY PACKAGED pHEMT Features

... RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and ...
IECON05_Boost_Integr..
IECON05_Boost_Integr..

... operate correctly. The ballast is additional equipment connected between the power line and the discharge lamp. The ballast has two main functions: to guarantee lamps ignition through the application of a high voltage pulse between the lamp electrodes and to limit the current that will circulate thr ...
DL01420622071
DL01420622071

Comparative Analysis of CMOS OTA
Comparative Analysis of CMOS OTA

... produces an output current and hence it is a voltage controlled current source (VCCS). There is usually an additional input for a current to control the amplifier's trans-conductance. The OTA is similar to a standard Operational Amplifier in that it has a high impedance differential input stage and ...
OWNER`S MANUAL
OWNER`S MANUAL

MAX8516/MAX8517/MAX8518 1.425V to 3.6V Input, 1A, 0.2V Dropout LDO Regulators General Description
MAX8516/MAX8517/MAX8518 1.425V to 3.6V Input, 1A, 0.2V Dropout LDO Regulators General Description

... regulators operate from input voltages as low as 1.425V and are able to deliver up to 1A of continuous output current with a maximum dropout voltage of only 200mV. The output voltage can be set from 0.5V to (VIN - 0.2V) and is 1.4% accurate over load and line variations, from 0°C to +85°C. These reg ...
Radiometers
Radiometers

2bsst owner`s manual
2bsst owner`s manual

MOS Current Mode Logic for Low Power, Low Noise CORDIC
MOS Current Mode Logic for Low Power, Low Noise CORDIC

... static power, even when not switching. It is very important therefore in MCML circuits to maintain a shallow logic depth. In slowly clocked circuits, CMOS will not consume as much power as MCML, but in circuits with high performance requirements, MCML can have significantly better power-delay or ene ...
Transformerless Power Supply Design
Transformerless Power Supply Design

... Figure 2 Basic Voltage Divider Circuit Using resistors for both Z1 and Z2 will generally result in a poor power supply design. Good power supplies support a range of output current from Vout while holding the output voltage constant. In a resistor-based design, if there is any load current then the ...
An Application of a Protective Relaying Scheme using the UCA
An Application of a Protective Relaying Scheme using the UCA

< 1 ... 433 434 435 436 437 438 439 440 441 ... 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 © 2026
  • DMCA
  • Privacy
  • Terms
  • Report