Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Pulse-width_modulation> ?p ?o }
- Pulse-width_modulation abstract "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.".
- Pulse-width_modulation thumbnail PWM,_3-level.svg?width=300.
- Pulse-width_modulation wikiPageExternalLink pulse-width-modulation-pwm-tutorial.
- Pulse-width_modulation wikiPageExternalLink DeltaSigma.html.
- Pulse-width_modulation wikiPageExternalLink pulse-width-modulation-pwm-555-timer-ic.html.
- Pulse-width_modulation wikiPageExternalLink pwm-demo.
- Pulse-width_modulation wikiPageExternalLink synthsecrets47.asp.
- Pulse-width_modulation wikiPageExternalLink pulse_width_modulation.htm.
- Pulse-width_modulation wikiPageID "81242".
- Pulse-width_modulation wikiPageLength "24428".
- Pulse-width_modulation wikiPageOutDegree "91".
- Pulse-width_modulation wikiPageRevisionID "675864417".
- Pulse-width_modulation wikiPageWikiLink Acoustics.
- Pulse-width_modulation wikiPageWikiLink Aliasing.
- Pulse-width_modulation wikiPageWikiLink Analog_signal_to_discrete_time_interval_converter.
- Pulse-width_modulation wikiPageWikiLink Autotransformer.
- Pulse-width_modulation wikiPageWikiLink Average.
- Pulse-width_modulation wikiPageWikiLink Buck_converter.
- Pulse-width_modulation wikiPageWikiLink Capacitor.
- Pulse-width_modulation wikiPageWikiLink Carrier_signal.
- Pulse-width_modulation wikiPageWikiLink Carrier_wave.
- Pulse-width_modulation wikiPageWikiLink Category:Electronics.
- Pulse-width_modulation wikiPageWikiLink Class-D_amplifier.
- Pulse-width_modulation wikiPageWikiLink Clock_signal.
- Pulse-width_modulation wikiPageWikiLink Communications_system.
- Pulse-width_modulation wikiPageWikiLink Communications_systems.
- Pulse-width_modulation wikiPageWikiLink Comparator.
- Pulse-width_modulation wikiPageWikiLink Counter_(digital).
- Pulse-width_modulation wikiPageWikiLink Cycle_time.
- Pulse-width_modulation wikiPageWikiLink Delta-sigma_modulation.
- Pulse-width_modulation wikiPageWikiLink Direct_Stream_Digital.
- Pulse-width_modulation wikiPageWikiLink Direct_current.
- Pulse-width_modulation wikiPageWikiLink Duty_cycle.
- Pulse-width_modulation wikiPageWikiLink Electric_current.
- Pulse-width_modulation wikiPageWikiLink Electrical_load.
- Pulse-width_modulation wikiPageWikiLink Electronic_filter.
- Pulse-width_modulation wikiPageWikiLink Electronic_oscillator.
- Pulse-width_modulation wikiPageWikiLink Energy_regulator.
- Pulse-width_modulation wikiPageWikiLink FET.
- Pulse-width_modulation wikiPageWikiLink Field-effect_transistor.
- Pulse-width_modulation wikiPageWikiLink Flicker_fusion_threshold.
- Pulse-width_modulation wikiPageWikiLink Frequency.
- Pulse-width_modulation wikiPageWikiLink Harmonic.
- Pulse-width_modulation wikiPageWikiLink Hertz.
- Pulse-width_modulation wikiPageWikiLink Inductor.
- Pulse-width_modulation wikiPageWikiLink Insulated-gate_bipolar_transistor.
- Pulse-width_modulation wikiPageWikiLink Loudspeaker.
- Pulse-width_modulation wikiPageWikiLink Low-frequency_oscillation.
- Pulse-width_modulation wikiPageWikiLink Low_frequency_oscillation.
- Pulse-width_modulation wikiPageWikiLink MOSFET.
- Pulse-width_modulation wikiPageWikiLink MPPT.
- Pulse-width_modulation wikiPageWikiLink MRI.
- Pulse-width_modulation wikiPageWikiLink Magnetic_resonance_imaging.
- Pulse-width_modulation wikiPageWikiLink Maximum_power_point_tracking.
- Pulse-width_modulation wikiPageWikiLink Message.
- Pulse-width_modulation wikiPageWikiLink Microcontroller.
- Pulse-width_modulation wikiPageWikiLink Microcontrollers.
- Pulse-width_modulation wikiPageWikiLink Modulation.
- Pulse-width_modulation wikiPageWikiLink PCM.
- Pulse-width_modulation wikiPageWikiLink PC_speaker.
- Pulse-width_modulation wikiPageWikiLink PWM_sampling_theorem.
- Pulse-width_modulation wikiPageWikiLink Photovoltaic.
- Pulse-width_modulation wikiPageWikiLink Photovoltaics.
- Pulse-width_modulation wikiPageWikiLink Potentiometer.
- Pulse-width_modulation wikiPageWikiLink Pulse-amplitude_modulation.
- Pulse-width_modulation wikiPageWikiLink Pulse-code_modulation.
- Pulse-width_modulation wikiPageWikiLink Pulse-density_modulation.
- Pulse-width_modulation wikiPageWikiLink Pulse-position_modulation.
- Pulse-width_modulation wikiPageWikiLink Pulse_(signal_processing).
- Pulse-width_modulation wikiPageWikiLink Pulse_density_modulation.
- Pulse-width_modulation wikiPageWikiLink Pulse_wave.
- Pulse-width_modulation wikiPageWikiLink Radio_control.
- Pulse-width_modulation wikiPageWikiLink Rectangular_wave.
- Pulse-width_modulation wikiPageWikiLink Rheostat.
- Pulse-width_modulation wikiPageWikiLink Robotics.
- Pulse-width_modulation wikiPageWikiLink Sawtooth_wave.
- Pulse-width_modulation wikiPageWikiLink Servo_control.
- Pulse-width_modulation wikiPageWikiLink Servomechanism.
- Pulse-width_modulation wikiPageWikiLink Servomotor.
- Pulse-width_modulation wikiPageWikiLink Sewing_machine.
- Pulse-width_modulation wikiPageWikiLink Signal_edge.
- Pulse-width_modulation wikiPageWikiLink Signaling_(telecommunications).
- Pulse-width_modulation wikiPageWikiLink Signalling_(telecommunication).
- Pulse-width_modulation wikiPageWikiLink Sinc_function.
- Pulse-width_modulation wikiPageWikiLink Sinclair_Radionics.
- Pulse-width_modulation wikiPageWikiLink Sliding_mode_control.
- Pulse-width_modulation wikiPageWikiLink Space_vector_modulation.
- Pulse-width_modulation wikiPageWikiLink Spectrum.
- Pulse-width_modulation wikiPageWikiLink Subtractive_synthesis.
- Pulse-width_modulation wikiPageWikiLink Super_Audio_CD.
- Pulse-width_modulation wikiPageWikiLink TRIAC.
- Pulse-width_modulation wikiPageWikiLink Telecommunication.
- Pulse-width_modulation wikiPageWikiLink Telecommunications.
- Pulse-width_modulation wikiPageWikiLink Triangle_wave.
- Pulse-width_modulation wikiPageWikiLink Variac.
- Pulse-width_modulation wikiPageWikiLink Video_game_music.
- Pulse-width_modulation wikiPageWikiLink Volt.
- Pulse-width_modulation wikiPageWikiLink Voltage_regulator.
- Pulse-width_modulation wikiPageWikiLink Ward_Leonard_control.
- Pulse-width_modulation wikiPageWikiLink File:Delta_PWM.svg.