chap02_dc machines_230107
... 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 ...
4. Electrical characteristics
... Quick discharge coils allow a very fast discharge time (less than 10 s). Caution : In any case (without or with quick discharge coils), a time delay relay must be used to avoid connection of the capacitor bank within less than 5 minutes after its disconnection, either due to automatic control, prote ...
... Quick discharge coils allow a very fast discharge time (less than 10 s). Caution : In any case (without or with quick discharge coils), a time delay relay must be used to avoid connection of the capacitor bank within less than 5 minutes after its disconnection, either due to automatic control, prote ...
Tech Tutorial: Linear regulators vs
... Figure 14 shows a device capable of switching between modes of operation as a linear regulator and as a switching regulator. The block is divided into two independently operated sections: the first section (green) supports the system for use as a buck switching regulator. The second section (yellow) ...
... Figure 14 shows a device capable of switching between modes of operation as a linear regulator and as a switching regulator. The block is divided into two independently operated sections: the first section (green) supports the system for use as a buck switching regulator. The second section (yellow) ...
Electrical T est Equipment
... The Field Coil & Neutral Plane Test Head allows testing of series fields, interpoles and shunt fields. When used with the flux probe it is possible to test most coils in the machine without breaking the individual coil connections or isolating the coils from one another. The test quickly identifies ...
... The Field Coil & Neutral Plane Test Head allows testing of series fields, interpoles and shunt fields. When used with the flux probe it is possible to test most coils in the machine without breaking the individual coil connections or isolating the coils from one another. The test quickly identifies ...
CMOS drive DIL Reed Relays
... 98-1-A-5/17D (the D suffix indicates an internal diode). It is often possible to replace TTL ICs with their equivalent CMOS ones and replace standard DIL relays with Pickering Series 98, to obtain the benefits of CMOS without any circuit or PCB redesign. The range like its SIL equivalent has an inte ...
... 98-1-A-5/17D (the D suffix indicates an internal diode). It is often possible to replace TTL ICs with their equivalent CMOS ones and replace standard DIL relays with Pickering Series 98, to obtain the benefits of CMOS without any circuit or PCB redesign. The range like its SIL equivalent has an inte ...
Typical Current Transformer
... Generally current transformers and ammeters are used together as a matched pair in which the design of the current transformer is such as to provide a maximum secondary current corresponding to a full-scale deflection on the ammeter. In most current transformers an approximate inverse turns ratio ex ...
... Generally current transformers and ammeters are used together as a matched pair in which the design of the current transformer is such as to provide a maximum secondary current corresponding to a full-scale deflection on the ammeter. In most current transformers an approximate inverse turns ratio ex ...
Seminar Report
... We make a review of recent advances in the technology and applications of magnetic sensors, which have appeared in the past seven years following the publication of a comprehensive book on magnetic sensors and magnetometers. Here, we concentrate primarily on thin-film devices, as magnetic sensors ba ...
... We make a review of recent advances in the technology and applications of magnetic sensors, which have appeared in the past seven years following the publication of a comprehensive book on magnetic sensors and magnetometers. Here, we concentrate primarily on thin-film devices, as magnetic sensors ba ...
Document
... 49 •• [SSM] An insulated wire that has a resistance of 18.0 /m and a length of 9.00 m will be used to construct a resistor. First, the wire is bent in half and then the doubled wire is wound on a cylindrical form ( Figure 28-50) to create a 25.0-cm-long helix that has a diameter equal to 2.00 cm. F ...
... 49 •• [SSM] An insulated wire that has a resistance of 18.0 /m and a length of 9.00 m will be used to construct a resistor. First, the wire is bent in half and then the doubled wire is wound on a cylindrical form ( Figure 28-50) to create a 25.0-cm-long helix that has a diameter equal to 2.00 cm. F ...
Color - How Things Work
... another vector quantity the rate and rotation axis of the change in angular velocity ...
... another vector quantity the rate and rotation axis of the change in angular velocity ...
PDF
... Four distinct modes of operation can be identified for the pro-posed converter in the charging mode. The equivalent circuits of the converter in its switching operation are shown in Fig. 5. The voltage drop of the switch and the diode, the resistance of the inductance, and the mutual inductance of t ...
... Four distinct modes of operation can be identified for the pro-posed converter in the charging mode. The equivalent circuits of the converter in its switching operation are shown in Fig. 5. The voltage drop of the switch and the diode, the resistance of the inductance, and the mutual inductance of t ...
ACS752SCA-100 - Digi-Key
... Sensitivity (Sens). The change in sensor output in response to a 1 A change through the primary conductor. The sensitivity is the product of the magnetic circuit sensitivity (G / A) and the linear IC amplifier gain (mV/G). The linear IC amplifier gain is programmed at the factory to optimize the sen ...
... Sensitivity (Sens). The change in sensor output in response to a 1 A change through the primary conductor. The sensitivity is the product of the magnetic circuit sensitivity (G / A) and the linear IC amplifier gain (mV/G). The linear IC amplifier gain is programmed at the factory to optimize the sen ...
cautions for proper use of aluminum electrolytic capacitor
... temperature, applied voltage and applying time of voltage. Particularly, brief leakage current level which does not reach to specified time such as 2 minutes after applied voltage is unstable. Therefore, please pay attentions when aluminum capacitors are used for application such as timing circuit wh ...
... temperature, applied voltage and applying time of voltage. Particularly, brief leakage current level which does not reach to specified time such as 2 minutes after applied voltage is unstable. Therefore, please pay attentions when aluminum capacitors are used for application such as timing circuit wh ...
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.