TOOL FOR QUALITY TESTING OF RAW MATERIAL OF
... Muhammad Jawad Zaheer Permanent magnets are used extensively in synchronous machines that produce high power density, wide speed range and high efficiency. It is important therefore to determine the quality of the magnetic material before the assembly and magnetization in the electrical machines. In ...
... Muhammad Jawad Zaheer Permanent magnets are used extensively in synchronous machines that produce high power density, wide speed range and high efficiency. It is important therefore to determine the quality of the magnetic material before the assembly and magnetization in the electrical machines. In ...
AP Revision Guide Ch 15
... Lenz's law states that the direction of an induced emf is always such as to act against the change that causes the induced emf. To understand Lenz's law, consider an open coil connected to a centre-reading meter. The meter pointer deflects in a certain direction when a bar magnet is pushed into the ...
... Lenz's law states that the direction of an induced emf is always such as to act against the change that causes the induced emf. To understand Lenz's law, consider an open coil connected to a centre-reading meter. The meter pointer deflects in a certain direction when a bar magnet is pushed into the ...
The PIT MkV Pulsed Inductive Thruster / 7sS_
... earlier in which each of the parallel one-turn strands of the complete coil is broken into two halfturn segments that have series capacitors connected between them. The circuit of a single strand is shown in Figure 3. Each capacitor C has one side grounded, and they are charged in parallel to voltag ...
... earlier in which each of the parallel one-turn strands of the complete coil is broken into two halfturn segments that have series capacitors connected between them. The circuit of a single strand is shown in Figure 3. Each capacitor C has one side grounded, and they are charged in parallel to voltag ...
Tesla coil theory and applications
... non-conducting matherial, such as PVC pipe. Winding must be neat and tight. Any overlapping will aect performance dramaticly. A multilayer coil is not possible. It would be too dicult to insulate the layers. Say you have some 200kV output. Then for a two layer coil the potential between the layers ...
... non-conducting matherial, such as PVC pipe. Winding must be neat and tight. Any overlapping will aect performance dramaticly. A multilayer coil is not possible. It would be too dicult to insulate the layers. Say you have some 200kV output. Then for a two layer coil the potential between the layers ...
Introduction - Sree Narayana Gurukulam College of Engineering
... of inertia the diameter should be made as small as possible. Conversely a high inertia machine may be required for impact load applications and such machines are designed with larger diameter. Voltage between adjacent commutator segment The maximum core length is fixed by the maximum voltage that ca ...
... of inertia the diameter should be made as small as possible. Conversely a high inertia machine may be required for impact load applications and such machines are designed with larger diameter. Voltage between adjacent commutator segment The maximum core length is fixed by the maximum voltage that ca ...
Basic Concepts - New Age International
... mutually induced or (b) self induced. A mutually induced emf is set up in a coil whenever the flux produced by a neighbouring coil changes. However, if a single coil carries alternating current, its flux will follow the changes in the current. This change in flux will induce an emf known as self-ind ...
... mutually induced or (b) self induced. A mutually induced emf is set up in a coil whenever the flux produced by a neighbouring coil changes. However, if a single coil carries alternating current, its flux will follow the changes in the current. This change in flux will induce an emf known as self-ind ...
Electromagnetic Force Modification in Fault Current Limiters under
... in different types of transformers and FCLs. In Ref. [7], a study was carried out to investigate the effectiveness of finite element analysis to calculate the forces applied on the windings of a single-phase shell-type transformer. Also, the sensitivity of these methods explored to the very small ch ...
... in different types of transformers and FCLs. In Ref. [7], a study was carried out to investigate the effectiveness of finite element analysis to calculate the forces applied on the windings of a single-phase shell-type transformer. Also, the sensitivity of these methods explored to the very small ch ...
MAX17007A/MAX17007B/MAX17008 Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers General Description
... The MAX17007A/MAX17007B/MAX17008 are dual QuickPWM™ step-down controllers intended for general power generation in battery-powered systems. The two switched-mode power supplies (SMPSs) can also be combined to operate in a two-phase single-output mode. Constant on-time Quick-PWM operation provides fa ...
... The MAX17007A/MAX17007B/MAX17008 are dual QuickPWM™ step-down controllers intended for general power generation in battery-powered systems. The two switched-mode power supplies (SMPSs) can also be combined to operate in a two-phase single-output mode. Constant on-time Quick-PWM operation provides fa ...
LTC3788 - 2-Phase, Dual Output Synchronous
... Note 2: The LTC3788 is tested under pulsed load conditions such that TJ ≈ TA. The LTC3788E is guaranteed to meet specifications from 0°C to 85°C junction temperature. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation w ...
... Note 2: The LTC3788 is tested under pulsed load conditions such that TJ ≈ TA. The LTC3788E is guaranteed to meet specifications from 0°C to 85°C junction temperature. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation w ...
Switched-mode and Resonant dc Power Supplies
... Once the load current has reduced to the critical level as specified by equation (15.26), the input energy is in excess of the load requirement. Open loop load voltage regulation control is lost and the capacitor C tends to overcharge. Hardware approaches can be used to solve this problem • increase ...
... Once the load current has reduced to the critical level as specified by equation (15.26), the input energy is in excess of the load requirement. Open loop load voltage regulation control is lost and the capacitor C tends to overcharge. Hardware approaches can be used to solve this problem • increase ...
INF5490 RF MEMS
... • MEMS varactors have not developed as fast as MEMS switches – But: is the RF MEMS component closest to commercial applications – Relative mature technology – Already, many replacements using MEMS have been demonstrated, DC Æ 100 GHz ...
... • MEMS varactors have not developed as fast as MEMS switches – But: is the RF MEMS component closest to commercial applications – Relative mature technology – Already, many replacements using MEMS have been demonstrated, DC Æ 100 GHz ...
MAX17021/MAX17082/MAX17482 Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies General Description
... steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, polymer, or ceramic bulk output capacitors. A slew-rate controller allows controlled transitions between VID codes, controlled soft-start and s ...
... steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, polymer, or ceramic bulk output capacitors. A slew-rate controller allows controlled transitions between VID codes, controlled soft-start and s ...
Inductor
An inductor, also called a coil or reactor, is a passive two-terminal electrical component which resists changes in electric current passing through it. It consists of a conductor such as a wire, usually wound into a coil. When a current flows through it, energy is stored temporarily in a magnetic field in the coil. When the current flowing through an inductor changes, the time-varying magnetic field induces a voltage in the conductor, according to Faraday’s law of electromagnetic induction, According to Lenz's law the direction of induced e.m.f is always such that it opposes the change in current that created it. As a result, inductors always oppose a change in current, in the same way that a flywheel oppose a change in rotational velocity. Care should be taken not to confuse this with the resistance provided by a resistor.An inductor is characterized by its inductance, the ratio of the voltage to the rate of change of current, which has units of henries (H). Inductors have values that typically range from 1 µH (10−6H) to 1 H. Many inductors have a magnetic core made of iron or ferrite inside the coil, which serves to increase the magnetic field and thus the inductance. Along with capacitors and resistors, inductors are one of the three passive linear circuit elements that make up electric circuits. Inductors are widely used in alternating current (AC) electronic equipment, particularly in radio equipment. They are used to block AC while allowing DC to pass; inductors designed for this purpose are called chokes. They are also used in electronic filters to separate signals of different frequencies, and in combination with capacitors to make tuned circuits, used to tune radio and TV receivers.