XTR111 Demonstration Fixture
... R1 and R2 adjust the output voltage of the voltage regulator. Both resistors influence drift and dc accuracy. Vreg is set to 5V. R3 matches R5 (RSET ) for approximate cancellation of the bias current. This resistor also limits the current into the input if a signal is connected while power is off. R ...
... R1 and R2 adjust the output voltage of the voltage regulator. Both resistors influence drift and dc accuracy. Vreg is set to 5V. R3 matches R5 (RSET ) for approximate cancellation of the bias current. This resistor also limits the current into the input if a signal is connected while power is off. R ...
1 - Electrical and Computer Engineering
... phototransistor. Then phototransistor will convert the light in a small electrical signal. This signal will be amplified and fed to an audio-amplifying circuit which will drive a loud speaker. So you will be able to hear your voice which traveled as light. Although you will build a simple AM photoni ...
... phototransistor. Then phototransistor will convert the light in a small electrical signal. This signal will be amplified and fed to an audio-amplifying circuit which will drive a loud speaker. So you will be able to hear your voice which traveled as light. Although you will build a simple AM photoni ...
Improvement of Voltage Stability by the Advanced High Side Voltage
... regulator that can improve power system voltage stability by adding supplemental control to conventional generator excitation system control has been developed. This paper describes the principles, characteristics, and advantages of applying advanced HSVC in comparison with a conventional automatic ...
... regulator that can improve power system voltage stability by adding supplemental control to conventional generator excitation system control has been developed. This paper describes the principles, characteristics, and advantages of applying advanced HSVC in comparison with a conventional automatic ...
OPS-A Series Arc Lamp Power Supplies
... feature which must be satisfied before the power supply will power the lamp and which, if broken during operation, will disable the power supply. Overheating of the housing or accidental opening of the door will automatically shut down the power supply. ...
... feature which must be satisfied before the power supply will power the lamp and which, if broken during operation, will disable the power supply. Overheating of the housing or accidental opening of the door will automatically shut down the power supply. ...
DC Motor Board - Zilogic Systems
... switches is shown in the following diagram. By controlling, the switches the motor can be made to rotate forward, reverse, brake, and free run. The various switch states and their effect on the motor is shown in the following table. ...
... switches is shown in the following diagram. By controlling, the switches the motor can be made to rotate forward, reverse, brake, and free run. The various switch states and their effect on the motor is shown in the following table. ...
The unified power quality conditioner: the integration of series and
... in the combined method can be set lower than that in the current-detecting method because the voltage-detecting loop in the combined method compensates for the voltage flicker. For example, the passive filter used in the following experiments shows a capacitive impedance as ...
... in the combined method can be set lower than that in the current-detecting method because the voltage-detecting loop in the combined method compensates for the voltage flicker. For example, the passive filter used in the following experiments shows a capacitive impedance as ...
EXAMPLES OF STATOR WINDING PARTIAL DISCHARGE DUE TO INVERTER DRIVES
... Rapid advances in power electronic components in the past decade have lead to a new source of voltage surges. Inverter-fed drives (IFDs) of the pulse-width modulated (PWM) type and using insulated gate bipolar junction transistors (IGBTs) can create tens of thousands of fast risetime voltage surges ...
... Rapid advances in power electronic components in the past decade have lead to a new source of voltage surges. Inverter-fed drives (IFDs) of the pulse-width modulated (PWM) type and using insulated gate bipolar junction transistors (IGBTs) can create tens of thousands of fast risetime voltage surges ...
MAX98302 Stereo 2.4W Class D Amplifier General Description Features
... The MAX98302 filterless Class D amplifier offers much higher efficiency than Class AB amplifiers. The high efficiency of a Class D amplifier is due to the switching operation of the output stage transistors. Any power loss associated with the Class D output stage is mostly due to the I2R loss of the ...
... The MAX98302 filterless Class D amplifier offers much higher efficiency than Class AB amplifiers. The high efficiency of a Class D amplifier is due to the switching operation of the output stage transistors. Any power loss associated with the Class D output stage is mostly due to the I2R loss of the ...
ACS754xCB-150 - Allegro Microsystems
... been saturated, usually when the device has been subjected to a full-scale or high-current overload condition. The magnetic offset is largely dependent on the material used as a flux concentrator. The larger magnetic offsets are observed at the lower operating temperatures. Accuracy (ETOT). The accu ...
... been saturated, usually when the device has been subjected to a full-scale or high-current overload condition. The magnetic offset is largely dependent on the material used as a flux concentrator. The larger magnetic offsets are observed at the lower operating temperatures. Accuracy (ETOT). The accu ...
With a basic understanding of schematics, a schematic can be used
... complete or not. Remember, for an electrical device to activate, the electrical circuit or path to it must be complete. Again, we will use diagram 10118-1 to illustrate, assuming a 120VAC operator. This diagram uses AC voltage, so the meter should be set to VAC or V~. When using a meter, polarity do ...
... complete or not. Remember, for an electrical device to activate, the electrical circuit or path to it must be complete. Again, we will use diagram 10118-1 to illustrate, assuming a 120VAC operator. This diagram uses AC voltage, so the meter should be set to VAC or V~. When using a meter, polarity do ...
ACS754xCB-130 - Allegro Microsystems
... been saturated, usually when the device has been subjected to a full-scale or high-current overload condition. The magnetic offset is largely dependent on the material used as a flux concentrator. The larger magnetic offsets are observed at the lower operating temperatures. Accuracy (ETOT). The accu ...
... been saturated, usually when the device has been subjected to a full-scale or high-current overload condition. The magnetic offset is largely dependent on the material used as a flux concentrator. The larger magnetic offsets are observed at the lower operating temperatures. Accuracy (ETOT). The accu ...
Improving the Active Power Filter Performance with a Prediction
... widely studied and several methods to control them have been proposed, e.g. [1] – [4]. In harmonic filtering the active filter current reference generation plays an important role: if the reference is poor, a good filtering result cannot be achieved. A common problem in voltage source shunt active f ...
... widely studied and several methods to control them have been proposed, e.g. [1] – [4]. In harmonic filtering the active filter current reference generation plays an important role: if the reference is poor, a good filtering result cannot be achieved. A common problem in voltage source shunt active f ...
Speed Control of High-Speed BLDC with Pulse Amplitude
... the rotor position given by the Hall sensor. BLDC motors can be commutated by monitoring the back EMF signals instead of the Hall sensors. The relationship between the Hall sensors and back EMF, with respect to the phase voltage, is shown in Figure 7. As we have seen in earlier sections, every commu ...
... the rotor position given by the Hall sensor. BLDC motors can be commutated by monitoring the back EMF signals instead of the Hall sensors. The relationship between the Hall sensors and back EMF, with respect to the phase voltage, is shown in Figure 7. As we have seen in earlier sections, every commu ...
Digital Storage Oscilloscopes - TPS2012B, TPS2014B
... Tektronix IsolatedChannel technology simplifies floating measurements. Unlike ground-referenced oscilloscopes, the TPS2000B input connector shells are isolated from each other and from earth ground. Within the specified 600 VRMS maximum float voltage, IsolatedChannel technology keeps current from fl ...
... Tektronix IsolatedChannel technology simplifies floating measurements. Unlike ground-referenced oscilloscopes, the TPS2000B input connector shells are isolated from each other and from earth ground. Within the specified 600 VRMS maximum float voltage, IsolatedChannel technology keeps current from fl ...
Industrial Power System Design in a Utility Environment
... The second type consists of 2,400-Vac, 1,000 hp, four- of economics. For a utility, downtime is simply loss of revpole, three-phase, squirrel-cage induction motors serving enue from the sale of electricity. For the industrial user, reciprocating compressors. Synchronous machines were downtime result ...
... The second type consists of 2,400-Vac, 1,000 hp, four- of economics. For a utility, downtime is simply loss of revpole, three-phase, squirrel-cage induction motors serving enue from the sale of electricity. For the industrial user, reciprocating compressors. Synchronous machines were downtime result ...
Comparing Topologies and the (Design) Rules
... “Equations for all topologies are available, and one just needs to use them”---- correct? No, in fact even this write-up provides such a set of design equations, but that is just not enough. Equations are by nature ‘single-point’ computations. For example if we input a given operating condition: V = ...
... “Equations for all topologies are available, and one just needs to use them”---- correct? No, in fact even this write-up provides such a set of design equations, but that is just not enough. Equations are by nature ‘single-point’ computations. For example if we input a given operating condition: V = ...
EE 101 Lab 5 PCB sub
... create the 5 volts, we would find that the actual voltage would vary as the load changed and as the batteries gradually discharged. This sort of voltage variation would lead to incorrect operation of the microcontroller and other malfunctions. In order to avoid these performance issues, the required ...
... create the 5 volts, we would find that the actual voltage would vary as the load changed and as the batteries gradually discharged. This sort of voltage variation would lead to incorrect operation of the microcontroller and other malfunctions. In order to avoid these performance issues, the required ...
HW03
... ii) (1 pts) Closely observe the change in the wires. If turning the heater on increases the current through the wires by 10 times, does the power loss in the wires increase by 10 times, more than 10 times, or less than 10 times? Would a 10 times increase be consistent with P=IV? b) In this part of t ...
... ii) (1 pts) Closely observe the change in the wires. If turning the heater on increases the current through the wires by 10 times, does the power loss in the wires increase by 10 times, more than 10 times, or less than 10 times? Would a 10 times increase be consistent with P=IV? b) In this part of t ...
Stability analysis of low-dropout linear
... or PNP pass elements. Selecting the appropriate output capacitor and resistor to place in series with the capacitor easily solves most stability issues. The expression for the (open) control loop gain and phase vs. frequency is derived and an illustrative example is given. The expression for the con ...
... or PNP pass elements. Selecting the appropriate output capacitor and resistor to place in series with the capacitor easily solves most stability issues. The expression for the (open) control loop gain and phase vs. frequency is derived and an illustrative example is given. The expression for the con ...
10EE751 HVDC TRANSMISSION
... This Implies that for a given power level, DC lines requires less RoW, Simpler , and cheaper towers and reduced conductors and insulator costs. The power losses are also reduced with DC as there are only two conductors are used. No skin effect with DC is also beneficial in reducing power loss ma ...
... This Implies that for a given power level, DC lines requires less RoW, Simpler , and cheaper towers and reduced conductors and insulator costs. The power losses are also reduced with DC as there are only two conductors are used. No skin effect with DC is also beneficial in reducing power loss ma ...
GIGAVAC HXNC241 Normally Closed EPIC DC Contactor
... 4 Contactor has two coils. Both are used for pick-up, and then in approximately 75 milliseconds, one coil is electronically removed from the coil drive circuit. The remaining coil supplies low continuous hold power sufficient for the contactor to meet all of its specified performance specifications. ...
... 4 Contactor has two coils. Both are used for pick-up, and then in approximately 75 milliseconds, one coil is electronically removed from the coil drive circuit. The remaining coil supplies low continuous hold power sufficient for the contactor to meet all of its specified performance specifications. ...
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.