ISG1200 - Instruments et Systèmes
... The cursor indicates the active number which can change value with the rotating encoder. To change active number, it is necessary to move the cursor under the number with the keys under the symbols and . To modify the amplitude quickly, it is also possible to use the keys x10, 10 to directly mul ...
... The cursor indicates the active number which can change value with the rotating encoder. To change active number, it is necessary to move the cursor under the number with the keys under the symbols and . To modify the amplitude quickly, it is also possible to use the keys x10, 10 to directly mul ...
Application Note No. 099
... For this application board ease of use and test has been the main consideration and therefore a SMA-connector was used for measuring the output power directly into a 50 Ω load instead of using a loop antenna to make fieldstrength measurements. However, in the actual application the inductance L1 wil ...
... For this application board ease of use and test has been the main consideration and therefore a SMA-connector was used for measuring the output power directly into a 50 Ω load instead of using a loop antenna to make fieldstrength measurements. However, in the actual application the inductance L1 wil ...
AN-EVALSF3-ICE3B0565J
... VCC must therefore be above the switch off threshold VCCoff = 10.5V. While supporting low ripple on VOUT and fast response on load jump, efficiency also increased significantly during Active Burst Mode. When the voltage level at FB falls below 1.35V, capacitor C7 at SOFTS pin is allowed to charge fr ...
... VCC must therefore be above the switch off threshold VCCoff = 10.5V. While supporting low ripple on VOUT and fast response on load jump, efficiency also increased significantly during Active Burst Mode. When the voltage level at FB falls below 1.35V, capacitor C7 at SOFTS pin is allowed to charge fr ...
Advanced Mechanical, Electrical and ANNEX IV APS12 Technical Teaching Equipment
... Front panel diagram with signaling lamps to indicate the circuit breakers state. Inductances for simulating the transient and sub-transient state of the generator. 400 VAC Three-Phase Power supply. Current transformers. Voltage transformers. Vector inverter with automatic frequency load controller ( ...
... Front panel diagram with signaling lamps to indicate the circuit breakers state. Inductances for simulating the transient and sub-transient state of the generator. 400 VAC Three-Phase Power supply. Current transformers. Voltage transformers. Vector inverter with automatic frequency load controller ( ...
FHR1200 Micro-Power, Ultra Wide Voltage Regulator FHR120 0 —
... Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard perfor ...
... Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard perfor ...
TL082 Wide Bandwidth Dual JFET Input Operational Amplifier
... forced to a high state. The amplifiers will operate with a common-mode input voltage equal to the positive supply; however, the gain bandwidth and slew rate may be decreased in this condition. When the negative common-mode voltage swings to within 3V of the negative supply, an increase in input offs ...
... forced to a high state. The amplifiers will operate with a common-mode input voltage equal to the positive supply; however, the gain bandwidth and slew rate may be decreased in this condition. When the negative common-mode voltage swings to within 3V of the negative supply, an increase in input offs ...
2x1.2W stereo audio power amplifier with dedicated standby pins
... 2. All PSRR data limits are guaranteed by production sampling tests. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the sinusoidal signal superimposed upon ...
... 2. All PSRR data limits are guaranteed by production sampling tests. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the sinusoidal signal superimposed upon ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... The first reported CMOS power amplifier operated in the 900MHz ISM band delivering output power from 20μW to 20 mW using a 3V supply, and was implemented in 1μm technology. The measured drain efficiency of the power amplifier with the de-feed inductors of the output stage implemented on chip is 25%, ...
... The first reported CMOS power amplifier operated in the 900MHz ISM band delivering output power from 20μW to 20 mW using a 3V supply, and was implemented in 1μm technology. The measured drain efficiency of the power amplifier with the de-feed inductors of the output stage implemented on chip is 25%, ...
SEL-734 Data Sheet
... • View load profile data. • Monitor and control inputs and outputs. • Read and save TOU data. • Place meter into test mode and monitor test pulse output. ...
... • View load profile data. • Monitor and control inputs and outputs. • Read and save TOU data. • Place meter into test mode and monitor test pulse output. ...
Short questions and answers EE1251 Electrical Machines II 1. Why
... additional Alternator with the existing one or the common bus-bars. • The terminal voltage magnitude of the incoming Alternator must be made equal to the existing Alternator or the bus-bar voltage magnitude. • The phase sequence of the incoming Alternator voltage must be similar to the bus-bar volta ...
... additional Alternator with the existing one or the common bus-bars. • The terminal voltage magnitude of the incoming Alternator must be made equal to the existing Alternator or the bus-bar voltage magnitude. • The phase sequence of the incoming Alternator voltage must be similar to the bus-bar volta ...
factor Form Value RMS value Average
... Explanation of speed control of induction motor by VFD (Variable frequency Drive): The synchronous speed of the induction motor can be varied smoothly over a wide range by changing the supply frequency. In order to maintain the air gap flux at its normal value under varying frequency conditions, ...
... Explanation of speed control of induction motor by VFD (Variable frequency Drive): The synchronous speed of the induction motor can be varied smoothly over a wide range by changing the supply frequency. In order to maintain the air gap flux at its normal value under varying frequency conditions, ...
MAX1553/MAX1554 High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs General Description
... can drive up to six LEDs at 20mA or nine LEDs at 15mA. Inductor values from 4.7µH to 47µH work satisfactorily. Larger values provide the best efficiency while small inductor values allow the smallest inductor size. A good choice for best efficiency is the TOKO D62 or D62L series at 47µH. For smalles ...
... can drive up to six LEDs at 20mA or nine LEDs at 15mA. Inductor values from 4.7µH to 47µH work satisfactorily. Larger values provide the best efficiency while small inductor values allow the smallest inductor size. A good choice for best efficiency is the TOKO D62 or D62L series at 47µH. For smalles ...
DC2431A - Linear Technology
... architecture ensures DC2431A runs either in discontinuous conduction mode (DCM) or pulse-skipping mode (PSM) without reversed inductor current. Both of them enhance the light load efficiency. The demo circuit is designed to be easily reconfigured to many other applications, including the example sch ...
... architecture ensures DC2431A runs either in discontinuous conduction mode (DCM) or pulse-skipping mode (PSM) without reversed inductor current. Both of them enhance the light load efficiency. The demo circuit is designed to be easily reconfigured to many other applications, including the example sch ...
MP1470H - Monolithic Power System
... mode. Refer to figure 2, the VAAM is an internal fixed voltage when input and output voltages are fixed. VCOMP is the error amplifier output which represents the peak inductor current information. When VCOMP is lower than VAAM, the internal clock is blocked, thus the MP1470H skips some pulses and ac ...
... mode. Refer to figure 2, the VAAM is an internal fixed voltage when input and output voltages are fixed. VCOMP is the error amplifier output which represents the peak inductor current information. When VCOMP is lower than VAAM, the internal clock is blocked, thus the MP1470H skips some pulses and ac ...
TL720M05-Q1 Low-Dropout Voltage Regulator
... The OUT terminal is the regulated 5-V output. The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor through a buffer. Saturation control as a function of the load current prevents any oversaturation of ...
... The OUT terminal is the regulated 5-V output. The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor through a buffer. Saturation control as a function of the load current prevents any oversaturation of ...
Industrial Controls Lecture
... only for motors. The overload protection device is required to protect the motor from destroying itself under an overloaded situation. ...
... only for motors. The overload protection device is required to protect the motor from destroying itself under an overloaded situation. ...
Industrial Controls
... only for motors. The overload protection device is required to protect the motor from destroying itself under an overloaded situation. ...
... only for motors. The overload protection device is required to protect the motor from destroying itself under an overloaded situation. ...
Eliminate Reactive Power and Increase System Efficiency of Isolated Bidirectional
... algorithm is simple and easy to implement, but it is essentially an active-power-centered control algorithm. It not only lacks flexibility but also brings additional stress to the devices used in the system during steady-state operation and the starting-up process. In order to improve the system per ...
... algorithm is simple and easy to implement, but it is essentially an active-power-centered control algorithm. It not only lacks flexibility but also brings additional stress to the devices used in the system during steady-state operation and the starting-up process. In order to improve the system per ...
A New Topology for Compensation of Voltage Sag/ Swell
... DC charging unit A control diagram for controlling DVR based on ref-erence voltages and actual load voltages with the help of PWM technique. In this a general PI controller is used for controlling the error value 9. DVR is used for compensate the changes in voltage dynamically.The voltage generated ...
... DC charging unit A control diagram for controlling DVR based on ref-erence voltages and actual load voltages with the help of PWM technique. In this a general PI controller is used for controlling the error value 9. DVR is used for compensate the changes in voltage dynamically.The voltage generated ...
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.