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Continued… - Pcpolytechnic
Continued… - Pcpolytechnic

WatchMan Installation Guide Simple Serial Bus Intelligent 8 line DCC Current Detector
WatchMan Installation Guide Simple Serial Bus Intelligent 8 line DCC Current Detector

CALCULATION OF TMS320LC54x POWER DISSIPATION
CALCULATION OF TMS320LC54x POWER DISSIPATION

... therefore, providing power savings when external clock synchronization is not necessary. Bus holder circuitry integrated into the device prevents floating buses, eliminating the need for external pullup resistors ...
3A, 30V, Host-Controlled Single-Input, Single Cell Switchmode Li
3A, 30V, Host-Controlled Single-Input, Single Cell Switchmode Li

... Gate Drive Supply. DRV is the bias supply for the gate drive of the internal MOSFETs. Bypass DRV to PGND with a 10-V or higher rated, +/-10%, X5R or better 2.2 µF ceramic capacitor. DRV may be used to drive external loads up to 10mA. DRV is active whenever the input is connected and VIN > VUVLO and ...
Current-Mode Control: Modeling and its Digital Application
Current-Mode Control: Modeling and its Digital Application

... domain. There has been a long history of the current-mode control modeling. Many previous attempts have been made especially for constant-frequency peak current-mode control. ...
12-pulse applications
12-pulse applications

... This mode of operation is especially used at higher power ratings to achieve lower line harmonics. In addition, by using this circuit, a lower DC current ripple is obtained when compared to a 6-pulse connection. ● 12-pulse series operation This mode of operation is ideal when converting from older s ...
4.5. Current Mode Instrumentation Amplifiers
4.5. Current Mode Instrumentation Amplifiers

... than the biopotential signals, which can significantly disturb the measurements. At last but not the least, another important noise source is the readout circuit itself. While extracting the biopotential signals noise of the CMOS transistors are also added to the signal reducing the SNR. Considering ...
Riello UPS Dialog Dual DLD Series 5000-6000 Manual
Riello UPS Dialog Dual DLD Series 5000-6000 Manual

SIPROTEC 4 7SJ63 Multifunction Protection Relay
SIPROTEC 4 7SJ63 Multifunction Protection Relay

... either simply cease at some stage or develop into lasting short-circuits. During intermittent activity, however, star-point resistors in networks that are impedance-earthed may undergo thermal overloading. The normal earth-fault protection cannot reliably detect and interrupt the current pulses, som ...
Gennum GS1881
Gennum GS1881

... The vertical sync interval is detected by integrating the composite sync pulses. The first broad vertical sync pulse causes an internal capacitor to charge past a fixed threshold and raises an internal vertical flag. Once the vertical flag is raised, the positive edge of the next serration clocks ou ...
CAE_tools_Kloukinas - Indico
CAE_tools_Kloukinas - Indico

... standard cells that ensure a predictable clock gating behavior. Controlled with tool specific settings. Can use normal standard cells but timing issues are always a hazard. ...
Testing Electronic Components
Testing Electronic Components

... high or low current can let you know if the circuit is overloaded or not fully operational. Current is always measured when the circuit is working (i.e: with power applied). It is measured IN SERIES with the circuit or component under test. The easiest way to measure current is to remove the fuse an ...
Polyphase Systems
Polyphase Systems

... system is commonly used in servomechanisms, which are self-correcting control systems capable of detecting and adjusting their own operation. Servomechanisms are used in ships and aircraft to keep them on course automatically, or, in simpler devices such as a thermostatic circuit, to regulate heat o ...
fr-e700 instruction manual (basic)
fr-e700 instruction manual (basic)

DTS0010 - Electrically Controlled Variable Fiber
DTS0010 - Electrically Controlled Variable Fiber

... A: It depends on the motor and supply voltage. Please contact OZ Optics for detailed application notes. Q: How many different wavelengths can be calibrated into a single unit? A: Normally the unit is calibrated for only one wavelength. However on request the unit can be calibrated for as many as fiv ...
GTL2003 1. General description 8-bit bidirectional low voltage translator
GTL2003 1. General description 8-bit bidirectional low voltage translator

... pull-up resistor value becomes the parallel combination of the two resistors when pass transistor is ON. If VDD1  VSREF  1.5 V, then pull-up resistors on the S-side are not required. Table 6 summarizes resistor values for various reference voltages and currents at 15 mA and also at 10 mA and 3 mA ...
Operation Manual
Operation Manual

INVERTER ARC WELDER
INVERTER ARC WELDER

... the different processes. You must be very careful when cutting or welding any metals which may contain one or more of the following: ...
Document
Document

PDF 2,1 MB - Elmos Semiconductor AG
PDF 2,1 MB - Elmos Semiconductor AG

SIMOTICS Low-voltage motors - Siemens
SIMOTICS Low-voltage motors - Siemens

... from standard to customized New drive tasks are always fascinating. This is because every one of them is different. However, some things always remain the same: the call for a profitable, safe and especially an integrated and seamless solution. We can offer you this solution with our Integrated Driv ...
YASKAWA AC Drive-Option Card Encoder Type (EnDat) Installation
YASKAWA AC Drive-Option Card Encoder Type (EnDat) Installation

... 4 Electrical Installation Take the following steps to prevent erroneous operation caused by noise interference: • Use shielded wire for the signal lines. • Make sure that control lines to the option card, main circuit wiring, and power lines are separated from one another. • The shield should be gr ...
L15b_4345_Sp02
L15b_4345_Sp02

A Microcontroller-Based Precision Xenon Strobe System
A Microcontroller-Based Precision Xenon Strobe System

Wireless Microphone system - JTS
Wireless Microphone system - JTS

... Equipped with S.A.W. filter for interference free operation. Built-in Mute, Noise and tone-key squelch. “Lock-on” mode avoids accidental changes of frequency, sensitivity and power-off. Equipped with both XLR balanced and Ø6.3mm unbalanced outputs. Tuned antennas for the most stable RF reception. Co ...
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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.
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