Power Electronics
... (open contact). As option the unit can also be started by an external control voltage of DC 10-24 V. This has to be connected to terminals X2, X3, X4 connecting means starting up,disconnection stopping. On terminal X3 a kickstart function can be activated. This is useful on motors that have a high s ...
... (open contact). As option the unit can also be started by an external control voltage of DC 10-24 V. This has to be connected to terminals X2, X3, X4 connecting means starting up,disconnection stopping. On terminal X3 a kickstart function can be activated. This is useful on motors that have a high s ...
power devices and systems - McMaster University > ECE
... Review of dc magnetic circuits, magnetomotive force, flux, permeability, reluctance, permeance Review of dc electric circuits, voltage, current, resistance, inductance, capacitance Review of single phase electric circuits, voltage, current, impedance, admittance, power, phase angle, phasor diagrams, ...
... Review of dc magnetic circuits, magnetomotive force, flux, permeability, reluctance, permeance Review of dc electric circuits, voltage, current, resistance, inductance, capacitance Review of single phase electric circuits, voltage, current, impedance, admittance, power, phase angle, phasor diagrams, ...
Fall 2007
... 3. (18 pts) A Lithium-Ion battery pack is used to power an MP3 Player. When the player is switched on the battery pack voltage drops from 3.80 V to 3.75 V and the player draws 10 mA. a) Draw a simple, reasonable model of the battery pack using ideal parts. Find the value of each part. b) When MP3 pl ...
... 3. (18 pts) A Lithium-Ion battery pack is used to power an MP3 Player. When the player is switched on the battery pack voltage drops from 3.80 V to 3.75 V and the player draws 10 mA. a) Draw a simple, reasonable model of the battery pack using ideal parts. Find the value of each part. b) When MP3 pl ...
SIMULATIONS WITH THE BUCK-BOOST TOPOLOGY EE562: POWER ELECTRONICS I COLORADO STATE UNIVERSITY
... converter is a function of not only the duty cycle, the inductor value, and the capacitor value but also the load resistance. In this case, the duty cycle is 50 %, but the output still exceeds the value of the input voltage. Change the load resistor back to 50Ω and the inductor to 200µH. Rerun the s ...
... converter is a function of not only the duty cycle, the inductor value, and the capacitor value but also the load resistance. In this case, the duty cycle is 50 %, but the output still exceeds the value of the input voltage. Change the load resistor back to 50Ω and the inductor to 200µH. Rerun the s ...
GF 9016
... Motor load must always be connected as continuous operation of the softstart with no load may cause overheating of the motor and softstart. It is recommended that the softstart is protected by superfast semiconductor fuses rated as per the current rating of the softstart or motor. However, standard ...
... Motor load must always be connected as continuous operation of the softstart with no load may cause overheating of the motor and softstart. It is recommended that the softstart is protected by superfast semiconductor fuses rated as per the current rating of the softstart or motor. However, standard ...
Diodes
... both the input and the output of the rectifier at once.] (b) Add the 10-μF capacitor, getting the polarity right, but remove the load resistor. Observe how the capacitor integrates the rectified power to make a smooth DC source. (c) Add the resistive load back into the circuit and see how the load c ...
... both the input and the output of the rectifier at once.] (b) Add the 10-μF capacitor, getting the polarity right, but remove the load resistor. Observe how the capacitor integrates the rectified power to make a smooth DC source. (c) Add the resistive load back into the circuit and see how the load c ...
Digital Power Seminar
... look much like noise on analog carriers. If you find there is a poorer C/N on analog carriers than you would suspect, it’s possible the cause is digital carriers that are too high a level. ...
... look much like noise on analog carriers. If you find there is a poorer C/N on analog carriers than you would suspect, it’s possible the cause is digital carriers that are too high a level. ...
NCP1216AFORWGEVB Implementing a DC/DC Single‐ended Forward Converter with the
... secondary windings is a tradeoff between the desired output power, allowable conduction losses in the windings and thermal considerations. The current density in the transformer winding can generally range from 2 to 3.5 A/mm2. If a cooling fan is used, the current density can be increased. The reset ...
... secondary windings is a tradeoff between the desired output power, allowable conduction losses in the windings and thermal considerations. The current density in the transformer winding can generally range from 2 to 3.5 A/mm2. If a cooling fan is used, the current density can be increased. The reset ...
LL-230 Loadlogger
... Accuracy: <5% of reading Internal Clock Accuracy: One minute per 2 weeks over specified temperature range. Operating Temperature Range: -40°C to +55°C Weight: 5.0 lbs. (2.3 kg) nominal Environment: Lifetime warranty for waterresistance Memory: Recording memory is user selectable to stop when full or ...
... Accuracy: <5% of reading Internal Clock Accuracy: One minute per 2 weeks over specified temperature range. Operating Temperature Range: -40°C to +55°C Weight: 5.0 lbs. (2.3 kg) nominal Environment: Lifetime warranty for waterresistance Memory: Recording memory is user selectable to stop when full or ...
Subject: High Frequency Amplifiers Topic: Using Extremely High
... film resistor/bipolar transistor technology. A differential signal on the inputs of the KH600 will generate a differential signal at the outputs. If a single ended input signal is applied to IN1 and a fixed voltage to IN2, the KH600 will produce both a differential and common mode output signal. To ...
... film resistor/bipolar transistor technology. A differential signal on the inputs of the KH600 will generate a differential signal at the outputs. If a single ended input signal is applied to IN1 and a fixed voltage to IN2, the KH600 will produce both a differential and common mode output signal. To ...
Deney1
... The aim of this experiment is to gain some experience in the use of the digital oscilloscope, DMM and function generators. Try to become comfortable using the oscilloscope DMM and Function generators as it will be used often in this lab, and they are an important instruments in electronics diagnosti ...
... The aim of this experiment is to gain some experience in the use of the digital oscilloscope, DMM and function generators. Try to become comfortable using the oscilloscope DMM and Function generators as it will be used often in this lab, and they are an important instruments in electronics diagnosti ...
Need a Lower Noise Power Supply?
... Optimum choice for Oscillator Characterization – True oscillator characteristics are difficult to evaluate with using noisy DC power supplies ...
... Optimum choice for Oscillator Characterization – True oscillator characteristics are difficult to evaluate with using noisy DC power supplies ...
Exp 1-Intro to Basic Laboratory Equipment
... important because the reading will indicate up-scale or positive reading for correct connection and down-scale or negative reading if reverse connection of the meter test leads to the resistor’s terminals. Therefore a voltmeter is not only excellent for measuring voltage but also for polarity determ ...
... important because the reading will indicate up-scale or positive reading for correct connection and down-scale or negative reading if reverse connection of the meter test leads to the resistor’s terminals. Therefore a voltmeter is not only excellent for measuring voltage but also for polarity determ ...
OPERATION MANUAL LDM-1000 LVDT/RVDT Signal Conditioning Module
... The Oscillator ‘Sync’ mode setting will depend on the number of LDM-1000’s and transducers in your system, and their physical locations. For a single LVDT or RVDT system you will be running the LDM-1000 in the Master (INT) mode. For systems with multiple LDM-1000’s, especially when they are co-locat ...
... The Oscillator ‘Sync’ mode setting will depend on the number of LDM-1000’s and transducers in your system, and their physical locations. For a single LVDT or RVDT system you will be running the LDM-1000 in the Master (INT) mode. For systems with multiple LDM-1000’s, especially when they are co-locat ...
Bourns® Chip Resistors
... *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The device characteristics and parameters in this data sheet can and do ...
... *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The device characteristics and parameters in this data sheet can and do ...
General Description Features
... The MAX1847 shuts down to reduce the supply current to 10µA when SHDN is low. In this mode, the internal reference, error amplifier, comparators, and biasing circuitry turn off. The EXT output becomes high impedance and the external pullup resistor connected to EXT pulls VEXT to VIN, turning off the ...
... The MAX1847 shuts down to reduce the supply current to 10µA when SHDN is low. In this mode, the internal reference, error amplifier, comparators, and biasing circuitry turn off. The EXT output becomes high impedance and the external pullup resistor connected to EXT pulls VEXT to VIN, turning off the ...
experiment 1 - Portal UniMAP
... important because the reading will indicate up-scale or positive reading for correct connection and down-scale or negative reading if reverse connection of the meter test leads to the resistor’s terminals. Therefore a voltmeter is not only excellent for measuring voltage but also for polarity determ ...
... important because the reading will indicate up-scale or positive reading for correct connection and down-scale or negative reading if reverse connection of the meter test leads to the resistor’s terminals. Therefore a voltmeter is not only excellent for measuring voltage but also for polarity determ ...
99% Efficiency True-Bridgeless Totem-Pole PFC
... the MOSFET version. The inductors are built using MPP core 55439A2 from Magnetics with inductance of 1.3mH. The control algorithm is implemented on a low-cost, fixed-point 60MHz DSP controller TMS320F28027. The converter is running at a switching frequency of 50 KHz. Fig. 6 gives pictures of both pr ...
... the MOSFET version. The inductors are built using MPP core 55439A2 from Magnetics with inductance of 1.3mH. The control algorithm is implemented on a low-cost, fixed-point 60MHz DSP controller TMS320F28027. The converter is running at a switching frequency of 50 KHz. Fig. 6 gives pictures of both pr ...
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.