MAX15049 Evaluation Kit Evaluates: General Description Features
... in sequencing mode during startup and the three outputs operate 120 degrees out of phase. The EV kit outputs can start into prebiased loads. The EV kit switching frequency is set to 500kHz with resistor R21. The switching frequency can be programmed from 200kHz to 1.2MHz by replacing this resistor. ...
... in sequencing mode during startup and the three outputs operate 120 degrees out of phase. The EV kit outputs can start into prebiased loads. The EV kit switching frequency is set to 500kHz with resistor R21. The switching frequency can be programmed from 200kHz to 1.2MHz by replacing this resistor. ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... The advancement of multilevel inverters give rise to convert power in multiple voltage steps achieving lower switching losses, better electromagnetic compatibility, higher voltage capability and improved power quality. The multilevel converters achieve high-voltage and high currents by means of a se ...
... The advancement of multilevel inverters give rise to convert power in multiple voltage steps achieving lower switching losses, better electromagnetic compatibility, higher voltage capability and improved power quality. The multilevel converters achieve high-voltage and high currents by means of a se ...
Making Fluorescent Lamp Ballast Measurements
... between the two lamp electrodes. Once the arc is established, the ballast quickly reduces the voltage and regulates the electric current to produce a steady light output. Without a ballast to limit its current, a fluorescent lamp connected directly to an uncontrolled high voltage power source would ...
... between the two lamp electrodes. Once the arc is established, the ballast quickly reduces the voltage and regulates the electric current to produce a steady light output. Without a ballast to limit its current, a fluorescent lamp connected directly to an uncontrolled high voltage power source would ...
250MHz to 4000MHz Dual, Analog Voltage Variable Attenuator MAX19790 General Description Features
... Note 1: TC is the temperature on the exposed pad of the package. TA is the ambient temperature of the device and PCB. Note 2: Based on junction temperature TJ = TC + (θJC x VCC x ICC). This formula can be used when the temperature of the exposed pad is known while the device is soldered down to a ...
... Note 1: TC is the temperature on the exposed pad of the package. TA is the ambient temperature of the device and PCB. Note 2: Based on junction temperature TJ = TC + (θJC x VCC x ICC). This formula can be used when the temperature of the exposed pad is known while the device is soldered down to a ...
DS3992 Two-Channel, Push-Pull CCFL Controller General Description Features
... Operating Circuits). The transformer has a center tap on the primary side that is connected to the DC inverter voltage supply. The DS3992 alternately turns on the two MOSFETs to create the high-voltage AC waveform on the secondary side. By varying the duration of the MOSFET turn-on times, the DS3992 ...
... Operating Circuits). The transformer has a center tap on the primary side that is connected to the DC inverter voltage supply. The DS3992 alternately turns on the two MOSFETs to create the high-voltage AC waveform on the secondary side. By varying the duration of the MOSFET turn-on times, the DS3992 ...
250MHz to 4000MHz Dual, Analog Voltage Variable Attenuator
... Note 1: TC is the temperature on the exposed pad of the package. TA is the ambient temperature of the device and PCB. Note 2: Based on junction temperature TJ = TC + (θJC x VCC x ICC). This formula can be used when the temperature of the exposed pad is known while the device is soldered down to a ...
... Note 1: TC is the temperature on the exposed pad of the package. TA is the ambient temperature of the device and PCB. Note 2: Based on junction temperature TJ = TC + (θJC x VCC x ICC). This formula can be used when the temperature of the exposed pad is known while the device is soldered down to a ...
Calibration of Phasor Measurement Unit at NIST
... attenuators, the voltage A/Ds, and the fitting algorithms. The magnitude and phase errors of the CTs are traceable back to the NIST calculable shunt [10]. The system used to do that is described in an intercomparison published in 2005 [11]. The gain and phase errors are determined from 40 Hz up to 1 ...
... attenuators, the voltage A/Ds, and the fitting algorithms. The magnitude and phase errors of the CTs are traceable back to the NIST calculable shunt [10]. The system used to do that is described in an intercomparison published in 2005 [11]. The gain and phase errors are determined from 40 Hz up to 1 ...
Altivar ® 31 Adjustable Speed AC Drives
... • 1 to 20 hp (0.75 to 15 kW), 525/575/600 V, three-phase input Industrial users and OEMs who specialize in material handling, pump, fan, packing, packaging, and general purpose motor control applications will find the features and functions of the ATV31 drive controller well suited for their use. ...
... • 1 to 20 hp (0.75 to 15 kW), 525/575/600 V, three-phase input Industrial users and OEMs who specialize in material handling, pump, fan, packing, packaging, and general purpose motor control applications will find the features and functions of the ATV31 drive controller well suited for their use. ...
Comparison of Distribution Transformer Losses and Capacity under
... increases above certain limits. All power electronic converters used in different types of electronic systems can increase harmonic disturbances by injecting harmonic currents directly into the grid. A non-linear load is created when the load current is not proportional to the instantaneous voltage. ...
... increases above certain limits. All power electronic converters used in different types of electronic systems can increase harmonic disturbances by injecting harmonic currents directly into the grid. A non-linear load is created when the load current is not proportional to the instantaneous voltage. ...
Volume 7, Issue 2, March-April 2016, pp. 78–90, Article ID:... Available online at
... conventional DTC the inverter switching frequency is still low, approximately less than one third of the sampling frequency [1, 2]. The inverter switching frequency can be increased using a dithering signal, by adding a limited amplitude high frequency signal to the torque and flux error signals [3] ...
... conventional DTC the inverter switching frequency is still low, approximately less than one third of the sampling frequency [1, 2]. The inverter switching frequency can be increased using a dithering signal, by adding a limited amplitude high frequency signal to the torque and flux error signals [3] ...
Utility frequency
The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency of the oscillations of alternating current (AC) in an electric power grid transmitted from a power plant to the end-user. In large parts of the world this is 50 Hz, although in the Americas and parts of Asia it is typically 60 Hz. Current usage by country or region is given in the list of mains power around the world.During the development of commercial electric power systems in the late 19th and early 20th centuries, many different frequencies (and voltages) had been used. Large investment in equipment at one frequency made standardization a slow process. However, as of the turn of the 21st century, places that now use the 50 Hz frequency tend to use 220–240 V, and those that now use 60 Hz tend to use 100–127 V. Both frequencies coexist today (Japan uses both) with no great technical reason to prefer one over the other and no apparent desire for complete worldwide standardization.Unless specified by the manufacturer to operate on both 50 and 60 Hz, appliances may not operate efficiently or even safely if used on anything other than the intended frequency.