dc machine - UniMAP Portal
... because of the armature reaction. Since the denominator terms decrease, there is less reduction in speed and speed regulation is improved (as shown in previous slide). If a motor has compensating windings, of course there will be no fluxweakening problem in the machines, and the flux in the machine ...
... because of the armature reaction. Since the denominator terms decrease, there is less reduction in speed and speed regulation is improved (as shown in previous slide). If a motor has compensating windings, of course there will be no fluxweakening problem in the machines, and the flux in the machine ...
Symmetrical Synchronous Machine per phase machine inductance
... start coil a 2 - a 2 wherein the current flows down the stator via coil side a2 and then ...
... start coil a 2 - a 2 wherein the current flows down the stator via coil side a2 and then ...
Steps in the Negative-Differential-Conductivity Regime of a Superconductor
... electric field across a sample length averages to Eo . The reorganized flux structure is influenced by several conditions: (1) The ends of the sample are at a fixed potential difference so the average electric field along any longitudinal path is close to the applied Eo ; (2) the current density int ...
... electric field across a sample length averages to Eo . The reorganized flux structure is influenced by several conditions: (1) The ends of the sample are at a fixed potential difference so the average electric field along any longitudinal path is close to the applied Eo ; (2) the current density int ...
Schottky diode I-V Characteristics
... between a metal and a semiconductor, creating a Schottky barrier (instead of a semiconductor– semiconductor junction as in conventional diodes). • Typical metals used are molybdenum, platinum, chromium or tungsten; and the semiconductor would typically be N-type silicon. • The metal side acts as the ...
... between a metal and a semiconductor, creating a Schottky barrier (instead of a semiconductor– semiconductor junction as in conventional diodes). • Typical metals used are molybdenum, platinum, chromium or tungsten; and the semiconductor would typically be N-type silicon. • The metal side acts as the ...
Experiment 4 - Portal UniMAP
... connected in series with the electromagnet winding can be used to vary the field current. Figure 4.1 illustrates how the speed versus armature voltage of a separatelyexcited dc motor is affected when the field current is decreased below its nominal value. Constant K1 becomes greater. This means that ...
... connected in series with the electromagnet winding can be used to vary the field current. Figure 4.1 illustrates how the speed versus armature voltage of a separatelyexcited dc motor is affected when the field current is decreased below its nominal value. Constant K1 becomes greater. This means that ...
Mechanical Actuation System
... • A TRIAC, or TRIode for Alternating Current is an electronic component approximately equivalent to two silicon-controlled rectifiers (SCRs/thyristors) joined in inverse parallel (paralleled but with the polarity reversed) and with their gates connected together • bidirectional electronic switch wh ...
... • A TRIAC, or TRIode for Alternating Current is an electronic component approximately equivalent to two silicon-controlled rectifiers (SCRs/thyristors) joined in inverse parallel (paralleled but with the polarity reversed) and with their gates connected together • bidirectional electronic switch wh ...
BD9870FPS
... Ensure that the GND fin is connected and is at the lowest potential under any operating conditions, including transients. 5. Input supply voltage Ensure that the Vcc pin is connected to the supply voltage. 6. Thermal design Thermal designs should allow for sufficient margin for power dissipation und ...
... Ensure that the GND fin is connected and is at the lowest potential under any operating conditions, including transients. 5. Input supply voltage Ensure that the Vcc pin is connected to the supply voltage. 6. Thermal design Thermal designs should allow for sufficient margin for power dissipation und ...
BD60A00NUX
... ① Input each control signal after VIN exceeds 2.2V and UVLO is off. ② When input Enable and PWM, the standup time should be placed as Min.100µs from 2.2V to stable voltage for VIN. ③ Since a soft start function stops working at the time of following PWM=H when EN=H is held with PWM=L. After EN=H sho ...
... ① Input each control signal after VIN exceeds 2.2V and UVLO is off. ② When input Enable and PWM, the standup time should be placed as Min.100µs from 2.2V to stable voltage for VIN. ③ Since a soft start function stops working at the time of following PWM=H when EN=H is held with PWM=L. After EN=H sho ...
AC Machines - UniMAP Portal
... Cage induction Motor rotor consists of a series of conducting bars laid into slot carved in the face of rotor and shorted at either end by large shorting ring A wound rotor has a complete set of three-phase winding that are mirror images of the winding on the stator. The three phases of the rotor ...
... Cage induction Motor rotor consists of a series of conducting bars laid into slot carved in the face of rotor and shorted at either end by large shorting ring A wound rotor has a complete set of three-phase winding that are mirror images of the winding on the stator. The three phases of the rotor ...
UNIT – 4 Explain the construction of Single phase transformer with
... A transformer is a static device which transfers electric energy from one circuit to another circuit without changing the frequency of the system. It works on electromagnetic induction principle. According to this principle, an e.m.f. is induced in a coil if it links a changing flux. Consider two co ...
... A transformer is a static device which transfers electric energy from one circuit to another circuit without changing the frequency of the system. It works on electromagnetic induction principle. According to this principle, an e.m.f. is induced in a coil if it links a changing flux. Consider two co ...
12 - Research Script International Journals
... converter likely. Semiconductor switches turned on and off more fast and lasted longer than other switches such as vacuum tubes and electromechanical relays. Middlebrook averaged the circuit configurations for each switch state in a method called state-space averaging. This simplification reduced tw ...
... converter likely. Semiconductor switches turned on and off more fast and lasted longer than other switches such as vacuum tubes and electromechanical relays. Middlebrook averaged the circuit configurations for each switch state in a method called state-space averaging. This simplification reduced tw ...
Specifications, quality control, manufacturing, and testing of
... 2.1.2.) The Storage Ring is composed of 32 bending magnets, 112 quadrupole magnets and 120 sextupoles magnets, plus a given number of spare magnets. 2.1.3.) The present specification contains the technical specifications for the bending magnets. All dimensions and tolerances of the magnets are defin ...
... 2.1.2.) The Storage Ring is composed of 32 bending magnets, 112 quadrupole magnets and 120 sextupoles magnets, plus a given number of spare magnets. 2.1.3.) The present specification contains the technical specifications for the bending magnets. All dimensions and tolerances of the magnets are defin ...
BD9873CP-V5
... Power supply and ground wiring should reflect consideration of the need to lower common impedance and minimize ripple as much as possible (by making wiring as short and thick as possible or rejecting ripple by incorporating inductance and capacitance). 9) Applications with modes that reverse VCC and ...
... Power supply and ground wiring should reflect consideration of the need to lower common impedance and minimize ripple as much as possible (by making wiring as short and thick as possible or rejecting ripple by incorporating inductance and capacitance). 9) Applications with modes that reverse VCC and ...
Coilgun
A coilgun (or Gauss rifle, in reference to Carl Friedrich Gauss, who formulated mathematical descriptions of the magnetic effect used by magnetic accelerators) is a type of projectile accelerator consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic or conducting projectile to high velocity. In almost all coilgun configurations, the coils and the gun barrel are arranged on a common axis.Coilguns generally consist of one or more coils arranged along a barrel, so the path of the accelerating projectile lies along the central axis of the coils. The coils are switched on and off in a precisely timed sequence, causing the projectile to be accelerated quickly along the barrel via magnetic forces. Coilguns are distinct from railguns, as the direction of acceleration in a railgun is at right angles to the central axis of the current loop formed by the conducting rails. In addition, railguns usually require the use of sliding contacts to pass a large current through the projectile or sabot but coilguns do not necessarily require sliding contacts. Whilst some simple coilgun concepts can use ferromagnetic projectiles or even permanent magnet projectiles, most designs for high velocities actually incorporate a coupled coil as part of the projectile.