IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... entire half cycle and the gate pulse to S1 is controlled to achieve the boost operation. Likewise, in the negative half cycle, S1 is kept on for the entire half cycle and S2is controlled. To achieve the boost operation, these two topologies use single inductor compared to the two inductors used in t ...
... entire half cycle and the gate pulse to S1 is controlled to achieve the boost operation. Likewise, in the negative half cycle, S1 is kept on for the entire half cycle and S2is controlled. To achieve the boost operation, these two topologies use single inductor compared to the two inductors used in t ...
PKB 4000B series Intermediate Bus Converters Input 36
... the voltage strength requirement for basic insulation according to IEC/EN/UL 60950-1. It is recommended to use a slow blow fuse at the input of each DC/DC converter. If an input filter is used in the circuit the fuse should be placed in front of the input filter. In the rare event of a component pro ...
... the voltage strength requirement for basic insulation according to IEC/EN/UL 60950-1. It is recommended to use a slow blow fuse at the input of each DC/DC converter. If an input filter is used in the circuit the fuse should be placed in front of the input filter. In the rare event of a component pro ...
M. Chen, K.K. Afridi and D.J. Perreault, “A Multilevel Energy Buffer and Voltage Modulator for Grid-Interfaced Micro-Inverters,” 2013 IEEE Energy Conversion Congress and Exposition , pp. 3070-3080, September 2013.
... steps up the voltage, and the cycloconverter converts the high frequency current into a sinusoidal line-frequency current, which is injected into the grid. Output power can be controlled by a combination of frequency control and phase-shift control. Twice-line-frequency energy buffering in the circu ...
... steps up the voltage, and the cycloconverter converts the high frequency current into a sinusoidal line-frequency current, which is injected into the grid. Output power can be controlled by a combination of frequency control and phase-shift control. Twice-line-frequency energy buffering in the circu ...
Power Transformers – Introduction to measurement of losses
... Liquid-filled transformers, most often used by electric utilities, have several performance advantages over dry-type transformers. Liquid-filled transformers tend to be more energy performant, have greater overload capability and have a longer service life. This longer service life is due to a great ...
... Liquid-filled transformers, most often used by electric utilities, have several performance advantages over dry-type transformers. Liquid-filled transformers tend to be more energy performant, have greater overload capability and have a longer service life. This longer service life is due to a great ...
F047023943
... issues that arise in MOS device as the device size goes on shrinking [1]. Out of these issues, power dissipation is a major drawback. It has been listed as one of the challenges in International Technology Roadmap for Semiconductors (ITRS) 2012. Different low power design techniques using CMOS are i ...
... issues that arise in MOS device as the device size goes on shrinking [1]. Out of these issues, power dissipation is a major drawback. It has been listed as one of the challenges in International Technology Roadmap for Semiconductors (ITRS) 2012. Different low power design techniques using CMOS are i ...
BDTIC www.BDTIC.com/infineon Application Note No. 098
... The Darlingtons are biased via their RF output pin (pin 3). Figure 4 shows the dependence of BGA614’s current consumption on the supply voltage for different values of the bias Resistor R1. R1 stabilizes the supply current by using voltage feedback. For BGA612 and BGA616 exist similar plots which ca ...
... The Darlingtons are biased via their RF output pin (pin 3). Figure 4 shows the dependence of BGA614’s current consumption on the supply voltage for different values of the bias Resistor R1. R1 stabilizes the supply current by using voltage feedback. For BGA612 and BGA616 exist similar plots which ca ...
Evaluation of Switch Currents in Nine-Switch Energy
... converters can produce better conditioned waveforms, while retaining attractive features of the voltage-source topology. No doubt, these are performance features that have long been pursued. Another feature that has been of interest too is to reduce the switch count of the voltage-source topology. F ...
... converters can produce better conditioned waveforms, while retaining attractive features of the voltage-source topology. No doubt, these are performance features that have long been pursued. Another feature that has been of interest too is to reduce the switch count of the voltage-source topology. F ...
AN2852
... primary winding split in two parts (sandwich configuration) and two secondary windings. The primary leakage inductance is about 3% of the magnetizing inductance. The half-bridge is operated at fixed frequency with complementary duty cycles on the two MOSFETs. The high-side FET is on during the D tim ...
... primary winding split in two parts (sandwich configuration) and two secondary windings. The primary leakage inductance is about 3% of the magnetizing inductance. The half-bridge is operated at fixed frequency with complementary duty cycles on the two MOSFETs. The high-side FET is on during the D tim ...
The DatasheetArchive - Datasheet Search Engine
... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
View - Microsemi
... Because a high battery extends the driving ability for both ringing and off hook, we observe that the loop length of the ring trip for the Am79R100/101 devices are increased compared to the Am79R79 device. For the Am79R100 device, the recommended setup where Rrt1 = 604K, Rrt2 = 12K, Crt = 1 uf, CF = ...
... Because a high battery extends the driving ability for both ringing and off hook, we observe that the loop length of the ring trip for the Am79R100/101 devices are increased compared to the Am79R79 device. For the Am79R100 device, the recommended setup where Rrt1 = 604K, Rrt2 = 12K, Crt = 1 uf, CF = ...
best practice manual-electric motors
... As magnetic flux cuts across the rotor bars, a voltage is induced in them, much as a voltage is induced in the secondary winding of a transformer. Because the rotor bars are part of a closed circuit (including the end rings), a current circulates in them. The rotor current in turn produces a magneti ...
... As magnetic flux cuts across the rotor bars, a voltage is induced in them, much as a voltage is induced in the secondary winding of a transformer. Because the rotor bars are part of a closed circuit (including the end rings), a current circulates in them. The rotor current in turn produces a magneti ...
Manual - Curtis Instruments
... Six identical FET drivers are designed to sink up to 3 amps through a resistive or inductive load. High frequency PWM (>16kHz) provides smooth current to the load. Internal flyback diodes to B+ are incorporated to reduce voltage spikes caused when pulsing coils. Constant current and constant voltage ...
... Six identical FET drivers are designed to sink up to 3 amps through a resistive or inductive load. High frequency PWM (>16kHz) provides smooth current to the load. Internal flyback diodes to B+ are incorporated to reduce voltage spikes caused when pulsing coils. Constant current and constant voltage ...
LAPPEENRANTA UNIVERSITY OF TECHNOLOGY DEPARTMENT
... installation. The most appropriate way to realize the rising potential of small scale generation is to tie loads and generating units together. This is accomplished in microgrids by using inverters to interface generating units with the distribution system. Such applications can increase the efficie ...
... installation. The most appropriate way to realize the rising potential of small scale generation is to tie loads and generating units together. This is accomplished in microgrids by using inverters to interface generating units with the distribution system. Such applications can increase the efficie ...
74LS122
... The output pulse tW is a function of the external components, Cext and Rext or Cext and Rint on the LS122. For values of Cext ≥ 1000 pF, the output pulse at VCC = 5.0 V and VRC = 5.0 V (see Figures 1, 2, and 3) is given by tW = K Rext Cext where K is nominally 0.45 If Cext is on pF and Rext is in kΩ ...
... The output pulse tW is a function of the external components, Cext and Rext or Cext and Rint on the LS122. For values of Cext ≥ 1000 pF, the output pulse at VCC = 5.0 V and VRC = 5.0 V (see Figures 1, 2, and 3) is given by tW = K Rext Cext where K is nominally 0.45 If Cext is on pF and Rext is in kΩ ...
AD7273/AD7274 3 MSPS, 10-/12-Bit ADCs in 8
... successive approximation ADCs, respectively. The parts operate from a single 2.35 V to 3.6 V power supply and feature throughput rates of up to 3 MSPS. Each part contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 55 MHz. The conversion proces ...
... successive approximation ADCs, respectively. The parts operate from a single 2.35 V to 3.6 V power supply and feature throughput rates of up to 3 MSPS. Each part contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 55 MHz. The conversion proces ...
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.