Low Noise Amplifier
... • This element is called varactor. The name is divided into 2 parts: 1st part “var” stands for variable, the 2nd part “actor” stands for capacitor. So varactor is a variable capacitor. • The basic implementation of a varactor is simply a reversed biased diode. When you reverse bias a diode, you vary ...
... • This element is called varactor. The name is divided into 2 parts: 1st part “var” stands for variable, the 2nd part “actor” stands for capacitor. So varactor is a variable capacitor. • The basic implementation of a varactor is simply a reversed biased diode. When you reverse bias a diode, you vary ...
excitation of dc generator
... Before the connection between magnetism and electricity was discovered, electrostatic generators were used. They operated on electrostatic principles. Such generators generated very high voltage and low current. They operated by using moving electrically charged belts, plates, and disks that carried ...
... Before the connection between magnetism and electricity was discovered, electrostatic generators were used. They operated on electrostatic principles. Such generators generated very high voltage and low current. They operated by using moving electrically charged belts, plates, and disks that carried ...
Synchronous Current Control of Three phase Induction motor by
... its phase will lag with respect to command current. PWM frequency is not constant (varies within a band) and as a result non-optimum harmonic ripple is generated in machine current. Fundamental current suffers a phase lag which increases at higher frequency. This phase deviation causes problems in h ...
... its phase will lag with respect to command current. PWM frequency is not constant (varies within a band) and as a result non-optimum harmonic ripple is generated in machine current. Fundamental current suffers a phase lag which increases at higher frequency. This phase deviation causes problems in h ...
EM-I QB - K.Sivakumar
... resistance as referred to secondary, equivalent reactance referred to both primary and secondary, equivalent impedance referred to both primary and secondary, total cu loss first using individual resistances of the two windings and secondly using equivalent resistances as referred to each side Expla ...
... resistance as referred to secondary, equivalent reactance referred to both primary and secondary, equivalent impedance referred to both primary and secondary, total cu loss first using individual resistances of the two windings and secondly using equivalent resistances as referred to each side Expla ...
Electrical Disturbances - How to Protect
... regardless of the condition of the input power source. Serves during outages ranging from a few seconds to several minutes. Standby generator: supplies power during a power outage. They take about 10 seconds to come online and supply power for extended periods. ...
... regardless of the condition of the input power source. Serves during outages ranging from a few seconds to several minutes. Standby generator: supplies power during a power outage. They take about 10 seconds to come online and supply power for extended periods. ...
circuit description - Allegro MicroSystems
... Low power (5 W to 50 W) converters are required for housekeeping or auxiliary applications in high power converters operating off of high-voltage AC mains (e.g., 480 VAC) or for low power instrumentation with similar power sources. Flyback converters have a simplicity and cost advantage at low power ...
... Low power (5 W to 50 W) converters are required for housekeeping or auxiliary applications in high power converters operating off of high-voltage AC mains (e.g., 480 VAC) or for low power instrumentation with similar power sources. Flyback converters have a simplicity and cost advantage at low power ...
Stereo Phono/Line Preamplifier Ultra 4B SE Special Edition User’s Manual
... The signal is then capacitor coupled through C4 to the phono terminal of the source selector switch (SW1). The passive network comprised of R8 and C5 implements the roll-off frequency of the RIAA curve at 2130 Hz. The selector switch is used to steer either the amplified phono signal or one of two l ...
... The signal is then capacitor coupled through C4 to the phono terminal of the source selector switch (SW1). The passive network comprised of R8 and C5 implements the roll-off frequency of the RIAA curve at 2130 Hz. The selector switch is used to steer either the amplified phono signal or one of two l ...
docx - PAWS
... Discuss the results of the Tungsten lamp circuit. Compare initial lamp resistance with steady state lamp resistance. Compare in-rush (initial) current with steady state current. Is in-rush current higher or lower than steady state current? Explain why in term of initial and steady state lamp resista ...
... Discuss the results of the Tungsten lamp circuit. Compare initial lamp resistance with steady state lamp resistance. Compare in-rush (initial) current with steady state current. Is in-rush current higher or lower than steady state current? Explain why in term of initial and steady state lamp resista ...
Power Demand and Total Harmonic Distortion Analysis for
... generally greater than that of the Turn-Off loss. As such, it is preferable to employ the ZVS method [9]. Also, in the transformer secondary side, the transformer and diode current burden can be reduced through a Current Doubler rectification circuit, which has the advantage of reducing the output v ...
... generally greater than that of the Turn-Off loss. As such, it is preferable to employ the ZVS method [9]. Also, in the transformer secondary side, the transformer and diode current burden can be reduced through a Current Doubler rectification circuit, which has the advantage of reducing the output v ...
universal power cells
... The Universal Power Cell is a Motor Load Sensor that monitors power (HP or KW). It works on both fixed and variable frequency ...
... The Universal Power Cell is a Motor Load Sensor that monitors power (HP or KW). It works on both fixed and variable frequency ...
doc - PAWS
... Discuss the results of the Tungsten lamp circuit. Compare initial lamp resistance with steady state lamp resistance. Compare in-rush (initial) current with steady state current. Is in-rush current higher or lower than steady state current? Explain why in term of initial and steady state lamp resista ...
... Discuss the results of the Tungsten lamp circuit. Compare initial lamp resistance with steady state lamp resistance. Compare in-rush (initial) current with steady state current. Is in-rush current higher or lower than steady state current? Explain why in term of initial and steady state lamp resista ...
Diodes
... the power supply to “ripple.” Verify that the frequency of the ripple is 120 Hz. (d) Reduce the resistive load by making the resistor 47kΩ instead of 10kΩ. Observe that the ripple decreases. Once again you may need to AC couple and increase the magnification of the DPO. Explain the advantage of the ...
... the power supply to “ripple.” Verify that the frequency of the ripple is 120 Hz. (d) Reduce the resistive load by making the resistor 47kΩ instead of 10kΩ. Observe that the ripple decreases. Once again you may need to AC couple and increase the magnification of the DPO. Explain the advantage of the ...
Experimental results
... D. Short circuit detection and protection-The short circuit protection was provided by desaturation detection, i.e. Collector emitter voltage sense. The desaturation detection feature and subsequent withdrawal of gate drive is the inherent feature of Powerex make M57962CL-01 IGBT gate driver. As the ...
... D. Short circuit detection and protection-The short circuit protection was provided by desaturation detection, i.e. Collector emitter voltage sense. The desaturation detection feature and subsequent withdrawal of gate drive is the inherent feature of Powerex make M57962CL-01 IGBT gate driver. As the ...
SESCTION-6-Chapter_16_rev1a
... Figure 16.6. Voltage with a dip and current with harmonics. The resulting powers pW and qW are computed and plotted in Figure 16.7. They clearly show the sudden drop in transferred power and change in reactive power due to the local change in phase difference. The small overshoots at the beginning o ...
... Figure 16.6. Voltage with a dip and current with harmonics. The resulting powers pW and qW are computed and plotted in Figure 16.7. They clearly show the sudden drop in transferred power and change in reactive power due to the local change in phase difference. The small overshoots at the beginning o ...
CONSkJCTION, OPERATION AND EVALUATION
... parallel addition of fixed capacitors as required. Since shunts of very low capacity may occasionally be required, it is unwise to make the variable capacitor externally attachable, as the external connection may easily introduce a few pF. The ceramic capacitor employed has a range of 4-30 pF. Timin ...
... parallel addition of fixed capacitors as required. Since shunts of very low capacity may occasionally be required, it is unwise to make the variable capacitor externally attachable, as the external connection may easily introduce a few pF. The ceramic capacitor employed has a range of 4-30 pF. Timin ...
Excitation and Ionization Energies of Helium and Mercury
... the voltage increment. The increment is the voltage step between successive data points. The finer the increment, the more data points will be taken. It is important to understand that analog and digital instruments are not infinitely precise. The DAQ controller is a digital device with 10bi ...
... the voltage increment. The increment is the voltage step between successive data points. The finer the increment, the more data points will be taken. It is important to understand that analog and digital instruments are not infinitely precise. The DAQ controller is a digital device with 10bi ...
BDTIC
... The TLE 4917 has 3 ground pins. From a mechanical point of view all ground pins should be connected to ground. Shortest wires should be used to avoid ground loops. If there is a need to reduce the number of used ground-pins any ground-pin combination may me used. Furthermore it is possible using onl ...
... The TLE 4917 has 3 ground pins. From a mechanical point of view all ground pins should be connected to ground. Shortest wires should be used to avoid ground loops. If there is a need to reduce the number of used ground-pins any ground-pin combination may me used. Furthermore it is possible using onl ...
Power Point Presentation - Levine Lectronics and Lectric
... faulted feeder on the first fault and open one or both feeders on the second fault before arcing burn down does serious damage. ...
... faulted feeder on the first fault and open one or both feeders on the second fault before arcing burn down does serious damage. ...
AC motors
... cycle current flows in one direction and in the second half cycle it flows in opposite direction. As AC voltage changes the poles alternate. AC motors can be classified into synchronous motors and induction motors. ...
... cycle current flows in one direction and in the second half cycle it flows in opposite direction. As AC voltage changes the poles alternate. AC motors can be classified into synchronous motors and induction motors. ...
User's Model 700924
... Grounding of the measuring instrument The protective grounding terminal of the measuring instrument must be connected to ground. Earth cable of the probe Make sure to connect the earth cable of the probe to the ground (grounding potential). Do not operated with suspected failures If you suspect that ...
... Grounding of the measuring instrument The protective grounding terminal of the measuring instrument must be connected to ground. Earth cable of the probe Make sure to connect the earth cable of the probe to the ground (grounding potential). Do not operated with suspected failures If you suspect that ...
Three-phase electric power
Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase or two-phase system at the same line to ground voltage because it uses less conductor material to transmit electrical power.The three-phase system was independently invented by Galileo Ferraris, Mikhail Dolivo-Dobrovolsky, Jonas Wenström and Nikola Tesla in the late 1880s.