Neutrino Factory Workshop, IOP, 28th October 2003
... The UKNF project needs your • input of industrial know-how right from the start • routine contribution to reality and feasibility checks The UK NF project represents to industry • a great technology driver in many subjects • an opportunity for large, medium and small companies • the chance to contri ...
... The UKNF project needs your • input of industrial know-how right from the start • routine contribution to reality and feasibility checks The UK NF project represents to industry • a great technology driver in many subjects • an opportunity for large, medium and small companies • the chance to contri ...
Homework 4:Power, Scaling, Wires and Logic (ms
... a) Using fixed voltage scaling, what will the speed and power consumption of the same processor be if scaled to 0.1 m technology? b) If the supply voltage in the scaled 0.1 m part was reduced to 1.0 V what will the power consumption and speed be? ...
... a) Using fixed voltage scaling, what will the speed and power consumption of the same processor be if scaled to 0.1 m technology? b) If the supply voltage in the scaled 0.1 m part was reduced to 1.0 V what will the power consumption and speed be? ...
POWER QUALITY IMPROVEMENT OF THE CUSTOM POWER
... compensate power-quality (PQ) problems through a three-phase four wire unified PQ conditioner (UPQC) under unbalanced and distorted load conditions. UNIFIED POWERQUALITY (PQ) conditioner (UPQC) systems were widely studied by many researchers as an eventual method to improve the PQ in electrical dist ...
... compensate power-quality (PQ) problems through a three-phase four wire unified PQ conditioner (UPQC) under unbalanced and distorted load conditions. UNIFIED POWERQUALITY (PQ) conditioner (UPQC) systems were widely studied by many researchers as an eventual method to improve the PQ in electrical dist ...
Space Vectors
... have to reach 5.7735V peak but with the revised drive, that 10V peak of output to the windings is achieved with only 5V peak drive coming from the MOSFETs. Rail voltage collision becomes less of an issue. ...
... have to reach 5.7735V peak but with the revised drive, that 10V peak of output to the windings is achieved with only 5V peak drive coming from the MOSFETs. Rail voltage collision becomes less of an issue. ...
This course is mainly motor control. There are only two labs. Oct 2nd
... ‐ Only copper resistance limits current in a stationary motor. ‐ Power must be added in a controlled way to protect the system. ‐ Other courses go more into detail on this. ...
... ‐ Only copper resistance limits current in a stationary motor. ‐ Power must be added in a controlled way to protect the system. ‐ Other courses go more into detail on this. ...
AN2154
... following Equation 10 - 12. Since these equations are only valid for α in the range between 0 and π/3, it could be very convenient to represent angle á by an 11-bit variable. This way, the most significant 3 bits can be used to indicate the sector, and the least significant 8-bits can contain the an ...
... following Equation 10 - 12. Since these equations are only valid for α in the range between 0 and π/3, it could be very convenient to represent angle á by an 11-bit variable. This way, the most significant 3 bits can be used to indicate the sector, and the least significant 8-bits can contain the an ...
Motor Hardware
... • Drive DC motor that draws 5 A maximum continuous current • Voltage operation at 12 Volts (automotive) • Low cost • Possibility of being driven in both directions • Commands will come from Teensy 3.1 controller • Commands will include PWM and direction control ...
... • Drive DC motor that draws 5 A maximum continuous current • Voltage operation at 12 Volts (automotive) • Low cost • Possibility of being driven in both directions • Commands will come from Teensy 3.1 controller • Commands will include PWM and direction control ...
Amplifiers
... time increases by 2 for every 6 dB of voltage difference. This lowers the frequency response by half. ...
... time increases by 2 for every 6 dB of voltage difference. This lowers the frequency response by half. ...
Electronic-Circuit II Chap 4. Communication Systems
... • Amplitude modulation in oscillator circuit • Carrier wave is generated by an LC tank circuit of the oscillator • Modulating signal is directly fed in along with the fed-back carrier wave • Transistor in CE configuration • Parallel tuned L2 & C4 generates the necessary carrier wave ...
... • Amplitude modulation in oscillator circuit • Carrier wave is generated by an LC tank circuit of the oscillator • Modulating signal is directly fed in along with the fed-back carrier wave • Transistor in CE configuration • Parallel tuned L2 & C4 generates the necessary carrier wave ...
Simple, Efficient, High- Brightness-LED Control
... current by means of its patented timedelayed hysteretic-control method. The overall system is simple, flexible, and able to power LEDs from a DC bus or directly from a rectified AC line. Controlling current accurately is a challenge when the forward voltage of each LED has a large manufacturing tole ...
... current by means of its patented timedelayed hysteretic-control method. The overall system is simple, flexible, and able to power LEDs from a DC bus or directly from a rectified AC line. Controlling current accurately is a challenge when the forward voltage of each LED has a large manufacturing tole ...
Experimental Results of Variable Frequency Drive for Three Phase
... III BASIC BLOCK DIAGRAM OF VVVF DRIVEOPEN LOOP CONTROL Most modern VVVF drives operation requires the three basic sections as shown in Fig. 2, the rectifier, dc bus, and inverter. Converting a three-phase voltage source to DC using rectifier. After the power flows through the rectifiers it is stored ...
... III BASIC BLOCK DIAGRAM OF VVVF DRIVEOPEN LOOP CONTROL Most modern VVVF drives operation requires the three basic sections as shown in Fig. 2, the rectifier, dc bus, and inverter. Converting a three-phase voltage source to DC using rectifier. After the power flows through the rectifiers it is stored ...
080916_Class_01
... - Only copper resistance limits current in a stationary motor. - Power must be added in a controlled way to protect the system. - Other courses go more into detail on this. Speed Control: - It is not always needed. - Many times motors run at a specific speed at all times. ...
... - Only copper resistance limits current in a stationary motor. - Power must be added in a controlled way to protect the system. - Other courses go more into detail on this. Speed Control: - It is not always needed. - Many times motors run at a specific speed at all times. ...
Experiment 8
... In the circuit shown in Figure 8-4 above, the source voltage, Vs, is “chopped” to produce an average voltage somewhere between 0% and 100% of Vs. Thus the average value of the voltage applied to the Load, VL, is controlled by closing and opening the “switch”, Q1. To close the switch, a firing signal ...
... In the circuit shown in Figure 8-4 above, the source voltage, Vs, is “chopped” to produce an average voltage somewhere between 0% and 100% of Vs. Thus the average value of the voltage applied to the Load, VL, is controlled by closing and opening the “switch”, Q1. To close the switch, a firing signal ...
Using the HP Z3801A as a Lab Frequency Standard
... to provide translation of the RS232 signal levels to RS422, and a 75179BN chip to provide the RS422 to RS232 level changes. The unit was built inside an old RS232 Null Modem adapter that had the right DB25 connectors. I had several of these in my junk box, and similar devices are common in computer ...
... to provide translation of the RS232 signal levels to RS422, and a 75179BN chip to provide the RS422 to RS232 level changes. The unit was built inside an old RS232 Null Modem adapter that had the right DB25 connectors. I had several of these in my junk box, and similar devices are common in computer ...
Lecture Slides
... + no need to “wire up” a circuit…everything on the shield - no need to “wire up” a circuit…(nothing learned about electronics) + SUPER EASY to program and use: - store data on the SD card - read the current date/time from the RTC ...
... + no need to “wire up” a circuit…everything on the shield - no need to “wire up” a circuit…(nothing learned about electronics) + SUPER EASY to program and use: - store data on the SD card - read the current date/time from the RTC ...
Distributed Generation Less Than 10kW
... MainPower operates a ripple signal at 283 HZ for load control purposes. MainPower utilizes Orion’s ripple signal at 317 HZ for load control purpose in the Wigram embedded network. No distributed generation or its control devices shall interfere with, or cause a short circuit of the ripple control si ...
... MainPower operates a ripple signal at 283 HZ for load control purposes. MainPower utilizes Orion’s ripple signal at 317 HZ for load control purpose in the Wigram embedded network. No distributed generation or its control devices shall interfere with, or cause a short circuit of the ripple control si ...
Pulse Width/Pulse Train Module
... 2 channels of outputs. Each channel can be independently programmed to be either PTO or PWM. “P” type or sourcing outputs are provided for EZIO-PM-P model and Differential outputs are provided for EZIO-PM-D model. Please note that the “D” differential model has only one output. ...
... 2 channels of outputs. Each channel can be independently programmed to be either PTO or PWM. “P” type or sourcing outputs are provided for EZIO-PM-P model and Differential outputs are provided for EZIO-PM-D model. Please note that the “D” differential model has only one output. ...
justification - Ecs.csus.edu
... one of the other kinds of modulation, perhaps even a digital type. It is the easiest to understand because any analog multiplication of two signals produces a spectrum that contains the sum and the difference of the two frequencies. It is often easier to get a multiplication of signals than to avoid ...
... one of the other kinds of modulation, perhaps even a digital type. It is the easiest to understand because any analog multiplication of two signals produces a spectrum that contains the sum and the difference of the two frequencies. It is often easier to get a multiplication of signals than to avoid ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... SPWM technique converts the sine wave into small number of pulses which have different width. It produces pulsating waves in which the width of pulses change according to the amplitude of sine wave voltage. For example, the amplitude of voltage is minimum at the start of sine wave at 0 degree and th ...
... SPWM technique converts the sine wave into small number of pulses which have different width. It produces pulsating waves in which the width of pulses change according to the amplitude of sine wave voltage. For example, the amplitude of voltage is minimum at the start of sine wave at 0 degree and th ...
June 2006 Dual Step-Up Converter Drives White LEDs with 1000:1
... (10µs on-time) allows a 1000:1 digital PWM dimming ratio with 100Hz PWM frequency—fast enough to avoid visible flicker. For instance, a combination of two LT3486s driving four LED strings (R-G-G-B) in a top-end display provides 1000:1 dimming while maintaining the true-color of the display even durin ...
... (10µs on-time) allows a 1000:1 digital PWM dimming ratio with 100Hz PWM frequency—fast enough to avoid visible flicker. For instance, a combination of two LT3486s driving four LED strings (R-G-G-B) in a top-end display provides 1000:1 dimming while maintaining the true-color of the display even durin ...
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.