Transforme
... It consists of two inductive coils which are electrically separated but magnetically linked. The two coils possess high mutual inductance. If one coil is connected to a source of alternating voltage, an alternating flux is set up in the laminated core, most of which is linked with the other coil in ...
... It consists of two inductive coils which are electrically separated but magnetically linked. The two coils possess high mutual inductance. If one coil is connected to a source of alternating voltage, an alternating flux is set up in the laminated core, most of which is linked with the other coil in ...
E4214 2012 NFPA 70E Electrical Safety in the Workplace Leader`s
... fully-trained qualified electrician, it does mean that workers must be “Task Qualified,” meaning that they are qualified with respect to specific equipment and work methods but remain unqualified for other electrical-related tasks. CREATING AN ELECTRICALLY SAFE WORKING CONDITION • The most effective ...
... fully-trained qualified electrician, it does mean that workers must be “Task Qualified,” meaning that they are qualified with respect to specific equipment and work methods but remain unqualified for other electrical-related tasks. CREATING AN ELECTRICALLY SAFE WORKING CONDITION • The most effective ...
RADMON-Concept-V1.1
... The on-line measurement of the Total Ionising Dose (TID) is nowadays most commonly [1,2] performed with Radiation Field Effect Transistors (RADFET). The measurement technique exploits the change of the threshold voltage (voltage needed at the gate of the transistor to achieve conduction) due to irra ...
... The on-line measurement of the Total Ionising Dose (TID) is nowadays most commonly [1,2] performed with Radiation Field Effect Transistors (RADFET). The measurement technique exploits the change of the threshold voltage (voltage needed at the gate of the transistor to achieve conduction) due to irra ...
Advanced vector control for voltage source
... where kp−pll is the PLL proportional gain and ki−pll is the PLL integral gain. These gains have been tuned according to [5] and are listed in Appendix A. The used Park transformation, T [θ], is outlined in Appendix B. ...
... where kp−pll is the PLL proportional gain and ki−pll is the PLL integral gain. These gains have been tuned according to [5] and are listed in Appendix A. The used Park transformation, T [θ], is outlined in Appendix B. ...
AN604 - STMicroelectronics
... current level point Ic, depending on the diode technology. When the current is lower than Ic, the temperature coefficient αVF of the forward voltage is negative. When the current is higher, the temperature coefficient becomes positive. This behavior is shown in Figure 2. For Schottky and bipolar dio ...
... current level point Ic, depending on the diode technology. When the current is lower than Ic, the temperature coefficient αVF of the forward voltage is negative. When the current is higher, the temperature coefficient becomes positive. This behavior is shown in Figure 2. For Schottky and bipolar dio ...
AP2552-53(A) - Diodes Incorporated
... Thermal protection prevents the IC from damage when the die temperature exceeds safe margins. This mainly occurs when heavy-overload or short-circuit faults are present for extended periods of time. The AP2552/53 AND AP2552A/53A implements a thermal sensing to monitor the operating junction temperat ...
... Thermal protection prevents the IC from damage when the die temperature exceeds safe margins. This mainly occurs when heavy-overload or short-circuit faults are present for extended periods of time. The AP2552/53 AND AP2552A/53A implements a thermal sensing to monitor the operating junction temperat ...
STC04IE170HP
... Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. ...
... Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. ...
Power Quality Improvement for Matrix Converter using
... the filter inductor size increases, these results in the overall increases with filter size. Moreover, the input filter output impedance, related to the total filter capacitor value, is more difficult to control and leads converter instability. As far as the matrix converter is concerned, a high dis ...
... the filter inductor size increases, these results in the overall increases with filter size. Moreover, the input filter output impedance, related to the total filter capacitor value, is more difficult to control and leads converter instability. As far as the matrix converter is concerned, a high dis ...
99% Efficiency True-Bridgeless Totem-Pole PFC
... interleaved totem-pole PFC with limited benefit. Soft-switching was used in both implementations due to the high reverse recovery charges of Silicon MOSFET. The low inductance value required for DCM/CCM boundary operation exacerbates the zero-crossing current spike problem. To pursuit higher efficie ...
... interleaved totem-pole PFC with limited benefit. Soft-switching was used in both implementations due to the high reverse recovery charges of Silicon MOSFET. The low inductance value required for DCM/CCM boundary operation exacerbates the zero-crossing current spike problem. To pursuit higher efficie ...
RD-021M8
... Check the following items before turning on the power. ◇The output voltage of the power supply is as described in the specifications. ◇The voltage/current of the input/output terminals conforms to the ratings in the specifications. ◇Input/output terminals are not incorrectly wired or accidentally sh ...
... Check the following items before turning on the power. ◇The output voltage of the power supply is as described in the specifications. ◇The voltage/current of the input/output terminals conforms to the ratings in the specifications. ◇Input/output terminals are not incorrectly wired or accidentally sh ...
implementation of 5-level cascaded h-bridge multilevel inverter with
... geothermal, bio-gas, hydro are renewable and get replenished naturally. In this paper, implementation of Multilevel Inverter using MPPT based Perturb and Observe algorithm for PV cell is demonstrated. The Output of the system is not continuous due to the variation in the irradiance of solar energy b ...
... geothermal, bio-gas, hydro are renewable and get replenished naturally. In this paper, implementation of Multilevel Inverter using MPPT based Perturb and Observe algorithm for PV cell is demonstrated. The Output of the system is not continuous due to the variation in the irradiance of solar energy b ...
Current Measurement
... environment. Is there a fundamental unit of electricity or are the electrical units derived from more basic things such as mass, length, and time? Standards laboratories such as the U.S. National Institute of Standards and Technology, NIST, measure the force between current carrying wires to compare ...
... environment. Is there a fundamental unit of electricity or are the electrical units derived from more basic things such as mass, length, and time? Standards laboratories such as the U.S. National Institute of Standards and Technology, NIST, measure the force between current carrying wires to compare ...
MAX742 Switch-Mode Regulator with +5V to ±12V or ±15V Dual Output _______________General Description
... Although designed for operation from a +5V logic supply, the MAX742 works well from 4.2V (the upper limit of the undervoltage lockout threshold) to +10V (absolute maximum rating plus a safety margin). The upper limit can be further increased by limiting the voltage at V+ with a zener shunt or series ...
... Although designed for operation from a +5V logic supply, the MAX742 works well from 4.2V (the upper limit of the undervoltage lockout threshold) to +10V (absolute maximum rating plus a safety margin). The upper limit can be further increased by limiting the voltage at V+ with a zener shunt or series ...
the objectives of site grounding
... Turn-on : 10V - 15V takes 1s .... Threshold typically 4V Turn-off : zero volts takes 2s ... accelerated by -ve volts IGBT devices can be produced with faster switching times at the expense of increased forward voltage drop Main advantages of IGBT are : Good power handling capabilities .... 5 ...
... Turn-on : 10V - 15V takes 1s .... Threshold typically 4V Turn-off : zero volts takes 2s ... accelerated by -ve volts IGBT devices can be produced with faster switching times at the expense of increased forward voltage drop Main advantages of IGBT are : Good power handling capabilities .... 5 ...
PPC2011-KlysModESS
... klystrons will be required which will be supplied individually by pulsed modulators of the solid state type. The nominal parameters for the initial test stand prototype are -115kV/21A, 3.5ms/14Hz. The state of the art of solid state pulsed klystron modulators suited for long pulse applications (>100 ...
... klystrons will be required which will be supplied individually by pulsed modulators of the solid state type. The nominal parameters for the initial test stand prototype are -115kV/21A, 3.5ms/14Hz. The state of the art of solid state pulsed klystron modulators suited for long pulse applications (>100 ...
Mercury-arc valve
A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.