Lms43LED-CG - LED Microsensor NT
... Light-Emitting Diodes Lms43LED series are fabricated from narrow band-gap InAsSbP/InAs-based heterostructures lattice matched to InAs substrate. ...
... Light-Emitting Diodes Lms43LED series are fabricated from narrow band-gap InAsSbP/InAs-based heterostructures lattice matched to InAs substrate. ...
Analog-Digital Conversion
... the capacitor voltage starts at zero and is charged for a set time by the output voltage of a sample-and-hold circuit. the capacitor is then switched to a known negative voltage reference, and charged in the opposite direction until it reaches zero volts again. this second charge is timed with a dig ...
... the capacitor voltage starts at zero and is charged for a set time by the output voltage of a sample-and-hold circuit. the capacitor is then switched to a known negative voltage reference, and charged in the opposite direction until it reaches zero volts again. this second charge is timed with a dig ...
Three Phase Cascaded H-Bridge Multilevel Inverter with Ac
... voltages in series and uses the central tap as the neutral. However, this power converter needs a complex control system in order to balance the capacitor Voltage. The diode-clamped inverter uses a single dc bus that issubdivided into a number of voltage levels by a series string ofCapacitors. A mat ...
... voltages in series and uses the central tap as the neutral. However, this power converter needs a complex control system in order to balance the capacitor Voltage. The diode-clamped inverter uses a single dc bus that issubdivided into a number of voltage levels by a series string ofCapacitors. A mat ...
Voltage Ratio Box - MD Electricals
... useful to step down the voltages for measurement. The unit works on 230V, 1ph, 50Hg AC Aux. Supply. Aux. Input supply to unit is provided through a mains cable with three pin plug. The uses of three core cable enable the unit to be properly grounded. The voltage ratio box has maximum input voltage o ...
... useful to step down the voltages for measurement. The unit works on 230V, 1ph, 50Hg AC Aux. Supply. Aux. Input supply to unit is provided through a mains cable with three pin plug. The uses of three core cable enable the unit to be properly grounded. The voltage ratio box has maximum input voltage o ...
Document
... This paper presents two single-phase to three phase conversion systems for a threephase load application. The load is connected to a single-phase grid through an AC-DC-AC single-phase to three-phase converter. The single-phase rectifier is composed of two parallel single phase half-bridge rectifiers ...
... This paper presents two single-phase to three phase conversion systems for a threephase load application. The load is connected to a single-phase grid through an AC-DC-AC single-phase to three-phase converter. The single-phase rectifier is composed of two parallel single phase half-bridge rectifiers ...
Calculating the Efficiency of the Solar Cells
... The output power is measured as a function of the resistance through an external load. As we saw, there is a built in potential in the solar cell that can be used to drive current through an external load. However, the current can be limited by the resistance of the solar cell itself (its ability t ...
... The output power is measured as a function of the resistance through an external load. As we saw, there is a built in potential in the solar cell that can be used to drive current through an external load. However, the current can be limited by the resistance of the solar cell itself (its ability t ...
T - Courses
... it is displayed the same way each time it sweeps across the screen. By “the same way”, we mean that it starts at the same point every time. If the triggering is not correct, the image looks garbled , like it is “running” across the screen. Try adjusting the trigger level, and see what happens. ...
... it is displayed the same way each time it sweeps across the screen. By “the same way”, we mean that it starts at the same point every time. If the triggering is not correct, the image looks garbled , like it is “running” across the screen. Try adjusting the trigger level, and see what happens. ...
Super Switch - Nishant Power Solutions
... transfer load from static switch to direct source I or Source 2 ...
... transfer load from static switch to direct source I or Source 2 ...
H45014650
... the compensating current if from/to the utility to cancel out the current harmonics on AC side thereby making the source current in phase with source voltage thus improving the power factor, Fig.1 shows the basic compensation principle of an active power filter. ...
... the compensating current if from/to the utility to cancel out the current harmonics on AC side thereby making the source current in phase with source voltage thus improving the power factor, Fig.1 shows the basic compensation principle of an active power filter. ...
Atmel LED Drivers MSL3163 and MSL3164
... a 1 MHz I2C serial interface. Both interfaces support video frame-by-frame LED string intensity control for up to 16 interconnected devices to allow active area dimming. The devices include an advanced PWM engine that easily synchronizes to a video signal, and per-string phase adjustment to reduce u ...
... a 1 MHz I2C serial interface. Both interfaces support video frame-by-frame LED string intensity control for up to 16 interconnected devices to allow active area dimming. The devices include an advanced PWM engine that easily synchronizes to a video signal, and per-string phase adjustment to reduce u ...
PV Cell Fed Unified Power Quality Conditioner for Voltage Sag
... systems. The control strategies for the series and shunt controllers are discussed below: A. Control Strategy for the Series VSC The flowchart for the series control strategy is shown in Fig 3. The control signals obtained from the PWM generator is used for switching the switches of the series VSC. ...
... systems. The control strategies for the series and shunt controllers are discussed below: A. Control Strategy for the Series VSC The flowchart for the series control strategy is shown in Fig 3. The control signals obtained from the PWM generator is used for switching the switches of the series VSC. ...
Input Sources
... Some applications use input signals generated by a programmable logic controller (PLC). A PLC is programmed to make ‘intelligent’ decisions about what signal should be sent to the board(s) by looking at the inputs and using this information to turn on/off the outputs. A PLC can generate a wide varie ...
... Some applications use input signals generated by a programmable logic controller (PLC). A PLC is programmed to make ‘intelligent’ decisions about what signal should be sent to the board(s) by looking at the inputs and using this information to turn on/off the outputs. A PLC can generate a wide varie ...
Power quality
... a long-term surveillance of a certain node over a period of several months. The results are typically used for clearing outages, identifying a system’s condition and verifying adherence to guarantee values. We measure the following power quality related quantities: · flicker: power oscillations, rap ...
... a long-term surveillance of a certain node over a period of several months. The results are typically used for clearing outages, identifying a system’s condition and verifying adherence to guarantee values. We measure the following power quality related quantities: · flicker: power oscillations, rap ...
Portable Pulse Oximetry
... which is also the constant amount of light transmitted. The normalized amounts were divided into each other (red into infrared) to produce a ratio which could then be interpreted to get blood oxygen saturation. We lacked the means to calibrate the oximeter, so we stopped with the ratio. The program ...
... which is also the constant amount of light transmitted. The normalized amounts were divided into each other (red into infrared) to produce a ratio which could then be interpreted to get blood oxygen saturation. We lacked the means to calibrate the oximeter, so we stopped with the ratio. The program ...
Chapter 36 Summary – Magnetism
... Static electricity is when (charges, circuits) accumulate on the (inside, surface) of an object which gains or loses (electrons, branches) which move more easily on a (conductor, insulator) than they do on a (conductor, insulator). A negatively charged object has (fewer, more) electrons than a neutr ...
... Static electricity is when (charges, circuits) accumulate on the (inside, surface) of an object which gains or loses (electrons, branches) which move more easily on a (conductor, insulator) than they do on a (conductor, insulator). A negatively charged object has (fewer, more) electrons than a neutr ...
Using Circuits, Signals and Instruments
... circuit at all. An amplifier, for example, might equally well be assembled from several centimeter-sized components connected by pieces of solid copper wire, or from a micron-scale pattern of thin metal and semiconductor films on the surface of a silicon wafer. Details of the geometry only become im ...
... circuit at all. An amplifier, for example, might equally well be assembled from several centimeter-sized components connected by pieces of solid copper wire, or from a micron-scale pattern of thin metal and semiconductor films on the surface of a silicon wafer. Details of the geometry only become im ...
Vacuum Contactors
... CPX:our most compact design for 3.6kV applications CLX: for motor starters up to 7.2 kV,offering front access to terminals with its slim line ● CBX: a cubic arrangement for 7.2 kV&12 kV applications ○ Single-phase or three-phase ○ Mechanical interlock between two contactors for motor reverse command ...
... CPX:our most compact design for 3.6kV applications CLX: for motor starters up to 7.2 kV,offering front access to terminals with its slim line ● CBX: a cubic arrangement for 7.2 kV&12 kV applications ○ Single-phase or three-phase ○ Mechanical interlock between two contactors for motor reverse command ...
Bus Compatible Digital PWM Controller, IXDP 610
... PWM frequencies from zero to 390kHz; the dead-time is programmable from zero to 14 clock cycles (0 to 11 % of the PWM cycle), which allows operation with fast power MOSFETs, IGBTs, and bipolar power transistors. A trade-off between PWM frequency and resolution is provided by selecting the counter re ...
... PWM frequencies from zero to 390kHz; the dead-time is programmable from zero to 14 clock cycles (0 to 11 % of the PWM cycle), which allows operation with fast power MOSFETs, IGBTs, and bipolar power transistors. A trade-off between PWM frequency and resolution is provided by selecting the counter re ...
App0502-11
... and many large motors have for 40 years employed “power factor correction” capacitors to offset their high inductance and thereby present a more proper load to the electric utility. New “electronic ballasts” are a variation of a switching power supply and are “high power factor” to begin with, not n ...
... and many large motors have for 40 years employed “power factor correction” capacitors to offset their high inductance and thereby present a more proper load to the electric utility. New “electronic ballasts” are a variation of a switching power supply and are “high power factor” to begin with, not n ...
IC Applications. Successive Approximation A/D converter
... to LSB to get a binary number that equals the original decimal number. The advantage to this counting strategy is much faster results: the DAC output converges on the analog signal input in much larger steps than with the 0-to-full count sequence of a regular counter. ...
... to LSB to get a binary number that equals the original decimal number. The advantage to this counting strategy is much faster results: the DAC output converges on the analog signal input in much larger steps than with the 0-to-full count sequence of a regular counter. ...
Structures of the Energy flow system
... specific positions • By alternating what phase is magnetized, the rotor takes a ”step” at a time ...
... specific positions • By alternating what phase is magnetized, the rotor takes a ”step” at a time ...
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.