PPT-Inductors and Inductance

A capacitor can be used to produce a desired electric field Similarly an inductor symbol can be used to produce a desired magnetic field We shall consider a long solenoid more specifically a short length near the middle of a long solenoid as our basic type of inductor. An induced current has a direction such that the magnetic field due to the induced current opposes the change in the magnetic flux that induces the current Same as saying 2 An induced emf acts to oppose the change that produces it brPage 6br Another Electronic Components Inductors & Inductance Induction In 1824, Oersted discovered that current passing though a coil created a magnetic field capable of shifting a compass needle. Seven years late Magnetism & Inductance. Presented by: James, VE3BUX. Magnetism: History / Importance. Navigation. Allowed routine exploration beyond the sight of land. Science. Allows the structural determination of chemicals via nuclear magnetic resonant (NMR) spectrography . When the current in a loop if wire changes with time, an . emf. is induced in the loop according to . Faraday’s . law. The self-induced . emf. is. Ɛ= -L(. dI. /. dt. ). Where L is the inductance of the loop. Inductance is measure of how much opposition a loop offers to a change in the current in the loop. Inductance has the SI unit of henry (H), where 1 H= 1 V(s/A). Self Inductance. Consider a solenoid . L. , connect it to a battery. Area . A. , length. . l. , . N. turns . What happens as you close the switch?. Lenz’s law – loop resists change in magnetic field. Capacitors . and Inductors. Read Alexander & . Sadiku. , Chapter 6.. Homework #8 and Lab #8 . due next week.. Quiz next week.. Two New Passive Circuit Elements. Recall that resistors are called . When the current in a loop if wire changes with time, an . emf. is induced in the loop according to . Faraday’s . law. The self-induced . emf. is. Ɛ= -L(. dI. /. dt. ). Where L is the inductance of the loop. Inductance is measure of how much opposition a loop offers to a change in the current in the loop. Inductance has the SI unit of henry (H), where 1 H= 1 V(s/A). Circuit . Analysis-1 Fall-2014. EE -1111. Instructor. : Hafiz . Zaheer. Hussain. Email: zaheer.hussain@ee.uol.edu.pk. www.hafizzaheer.pbworks.com. Department . of Electrical Engineering. The University of Lahore . ECB 3211 – RF & Microwave Engineering. Module - I. SOURCE: RF & Microwave Handbook, CRC Press. 1. Lumped Components. Lumped components provide . impedance matching. , attenuation, filtering, DC bypassing, and DC . When the current through an inductor changes, the magnetic field also changes. This changing magnetic field causes there to be an induced voltage across the terminals of the inductor. This induced voltage’s polarity is in a direction opposite to that of the original voltage applied.. Spring . 2018. Jose E. Schutt-Aine. Electrical & Computer Engineering. University of Illinois. jschutt@emlab.uiuc.edu. What is Extraction?. Process in which a complex arrangement of conductors and dielectric is converted into a . Section 34. To determine . mutual. inductance, we neglected the thickness of the linear conductors. . To determine . self. inductance, we must consider the finite size of the conductor. Otherwise . Objective of Lecture. Describe. The construction of an inductor. How energy is stored in an inductor. The electrical properties of an inductor. Relationship between voltage, current, and inductance; power; and energy. A generator is the opposite of a motor – it transforms mechanical energy into electrical energy. This is an ac generator:. The axle is rotated by an external force such as falling water or steam. The brushes are in constant electrical contact with the slip rings..