Recitations with Matt Leone
... Experimentally observe the 90o phase shift that shows that the oscillating voltage across an inductor leads the oscillating voltage across a resistor by /2. Use a sinusoidal source voltage to drive an inductor in series with a resistor. Use your oscilloscope to measure the voltage across the resist ...
... Experimentally observe the 90o phase shift that shows that the oscillating voltage across an inductor leads the oscillating voltage across a resistor by /2. Use a sinusoidal source voltage to drive an inductor in series with a resistor. Use your oscilloscope to measure the voltage across the resist ...
Weld using flux cored arc welding process
... Improved technology in the manufacture of tubular wire electrodes has resulted in higher quality seamed wires. The availability of seamless copper coated electrode wires has resulted in better wire feeding characteristics and improved current transfer at the contact tube/tip. The use of f uxing agen ...
... Improved technology in the manufacture of tubular wire electrodes has resulted in higher quality seamed wires. The availability of seamless copper coated electrode wires has resulted in better wire feeding characteristics and improved current transfer at the contact tube/tip. The use of f uxing agen ...
CA650002EN 600 A 15 kV Class BT-TAP
... Class BT-TAP™ deadbreak connector is used to terminate high-voltage underground cable to transformers, switches, switchgear and other apparatus. It is designed for use with unthreaded connectors, to easily retrofit existing 600 A BOLT™ installations or in new installations where a 200 A interface is ...
... Class BT-TAP™ deadbreak connector is used to terminate high-voltage underground cable to transformers, switches, switchgear and other apparatus. It is designed for use with unthreaded connectors, to easily retrofit existing 600 A BOLT™ installations or in new installations where a 200 A interface is ...
Differential Protection Of EAF Transformers Rogowski
... RC, measurement accuracy is independent of conductor location inside the coil loop. See Figure 2. To prevent the unwanted influence of nearby conductors carrying high currents, RCs are designed with two wire loops connected in electrically opposite directions. This cancels electromagnetic fields com ...
... RC, measurement accuracy is independent of conductor location inside the coil loop. See Figure 2. To prevent the unwanted influence of nearby conductors carrying high currents, RCs are designed with two wire loops connected in electrically opposite directions. This cancels electromagnetic fields com ...
LV Distribution
... The neutral conductor is also used as a protective conductor and is referred to as a PEN (Protective Earth and Neutral) conductor. This system is not permitted for conductors of less than 10 mm2 or for portable equipment. The TN-C system requires an effective equipotential environment within the ins ...
... The neutral conductor is also used as a protective conductor and is referred to as a PEN (Protective Earth and Neutral) conductor. This system is not permitted for conductors of less than 10 mm2 or for portable equipment. The TN-C system requires an effective equipotential environment within the ins ...
- ThyssenKrupp Magnettechnik
... In order to be capable of comparing the performances of permanent- magnetic and electromagnetic spreaders it is compulsory to take the operating time of the electromagnetic spreader into account, for its spreading performance is especially dependent on the max. admissible housing temperature (e.g. 7 ...
... In order to be capable of comparing the performances of permanent- magnetic and electromagnetic spreaders it is compulsory to take the operating time of the electromagnetic spreader into account, for its spreading performance is especially dependent on the max. admissible housing temperature (e.g. 7 ...
Abdel-Salam Hafez Abdel-Salam Hamza_2-Abdo
... “staggering distance”, as simulated in Figure 4. To investigate such effect on the magnetic fields beneath the parallel lines, Figure 5 shows the lateral magnetic field profile at tower of unstaggered line (line 1) in case of staggering distance equals to half span (180 m) compared to the lateral pr ...
... “staggering distance”, as simulated in Figure 4. To investigate such effect on the magnetic fields beneath the parallel lines, Figure 5 shows the lateral magnetic field profile at tower of unstaggered line (line 1) in case of staggering distance equals to half span (180 m) compared to the lateral pr ...
A New Zero-Field Paramagnetic Resonance Spectrometer
... its axis in orde: t.o ad}ust the coupling between the cavity and the transmISSIOn hne by varying the inclination angle of the loop. This is necessary if samples of different dielectric loss are to be studied. We have chosen to use a quarter-wavelength noncontacting sliding short for tuning the cavit ...
... its axis in orde: t.o ad}ust the coupling between the cavity and the transmISSIOn hne by varying the inclination angle of the loop. This is necessary if samples of different dielectric loss are to be studied. We have chosen to use a quarter-wavelength noncontacting sliding short for tuning the cavit ...
Estimating Electric Motor Life Using Motor Circuit Analysis
... •Resistance is used to detect loose and high resistance connections. Unbalance should be less than 3-5%. •Impedance and inductance are used to detect phase unbalances, winding contamination and used for rotor testing. Phase unbalances are normal when an electric motor rotor is in one position, espec ...
... •Resistance is used to detect loose and high resistance connections. Unbalance should be less than 3-5%. •Impedance and inductance are used to detect phase unbalances, winding contamination and used for rotor testing. Phase unbalances are normal when an electric motor rotor is in one position, espec ...
Magnetics Design 4 - Power Transformer Design
... clearly understood, but in a push-pull circuit, ambiguity often arises. For example, in a half-bridge circuit operating at minimum VIN, the duty cycle is likely to be in the vicinity of 90% (D = 0.9). The transformer is delivering power to the output 90% of the time, there is a voltage pulse applied ...
... clearly understood, but in a push-pull circuit, ambiguity often arises. For example, in a half-bridge circuit operating at minimum VIN, the duty cycle is likely to be in the vicinity of 90% (D = 0.9). The transformer is delivering power to the output 90% of the time, there is a voltage pulse applied ...
Preparation of a Medium-Voltage DC Grid Demonstration Project
... In three-phase ac power systems the two quantities to be controlled are voltage and frequency. With synchronous generators, frequency is controlled through increase or reduction of active power (provided by the turbine). Voltage stability is maintained by injecting or absorbing reactive power, depen ...
... In three-phase ac power systems the two quantities to be controlled are voltage and frequency. With synchronous generators, frequency is controlled through increase or reduction of active power (provided by the turbine). Voltage stability is maintained by injecting or absorbing reactive power, depen ...
One valuable thing to understand about the buck circuit is the input
... The steady state rms current through the capacitor is 1.4Arms. Inductors are sized based on the max DC current. We would probably add some margin and pick an inductor that was at least capable of 2A, maybe more depending how conservative we want to be. Capacitors (aluminum electrolytics) data sheets ...
... The steady state rms current through the capacitor is 1.4Arms. Inductors are sized based on the max DC current. We would probably add some margin and pick an inductor that was at least capable of 2A, maybe more depending how conservative we want to be. Capacitors (aluminum electrolytics) data sheets ...
Skin effect
Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor such that the current density is largest near the surface of the conductor, and decreases with greater depths in the conductor. The electric current flows mainly at the ""skin"" of the conductor, between the outer surface and a level called the skin depth. The skin effect causes the effective resistance of the conductor to increase at higher frequencies where the skin depth is smaller, thus reducing the effective cross-section of the conductor. The skin effect is due to opposing eddy currents induced by the changing magnetic field resulting from the alternating current. At 60 Hz in copper, the skin depth is about 8.5 mm. At high frequencies the skin depth becomes much smaller. Increased AC resistance due to the skin effect can be mitigated by using specially woven litz wire. Because the interior of a large conductor carries so little of the current, tubular conductors such as pipe can be used to save weight and cost.