
Al Explains the correct way to study for his Course(s) and to get the most out of them and the correct order !
This Section explains AC Voltage principles. RMS, Peak to Peak , Peak Voltage. How to find the frequency and Period of a Sinewave.
The physical characteristic of an Inductor is explained. What is an Air Core, what is an Iron Core and how it effects the Value of the Inductor ? The physical characteristics of an Inductor and how the value of inductance is measure by it's physical characteristics. Mutual Inductance and it's magnetic lines of force. How to Calculate (di/dt). How to find L, How to find eL. Back emf explained. Transformers explained.
AL gives explanation of Inductive Reactance (XL), with explanation of current and voltage in an Inductive circuit (XL). Al also explains how to manipulate the XL formula for L (value of the inductor) and F (frequency in the circuit). How current varies with XL. Discussed how to analysis of XL in series and parallel circuit configurations.
This Lecture starts off with a deeper discussion in a pure Inductive Circuit with a analysis of Voltage and current phase relationship. Vector analysis also explained. Z (impedance) introduced and how to calculate Z. Al explains how to find phase angle with calculator.Circuit calculations of R and XL in series and parallel explained.
R L circuit characteristics in a DC Circuit explained when a Step Voltage (Square Wave) is applied. R L time constants introduced and explained. Al also explains in detail how the voltage waveforms created in R L Circuit.
This Course Explains the principle of Inductance and Inductive Reactance. The Circuit Examples will show how Current and Voltage are affected in a Pure Inductive Circuit and How these properties change as Resistance is added to the the mix,in addition to this frequency of the Ac source voltage will be discussed and will show how the phase angle between the Voltage and current will be affected.
What is Inductance ?
Inductance is the tendency of an electrical conductor to oppose a change in the electric current flowing through it. The flow of electric current creates a magnetic field around the conductor. The field strength depends on the magnitude of the current, and follows any changes in current.
What is Inductive Reactance (XL) ?
Inductive reactance or simply reactance is not anything but the resistance of an inductive circuit. An inductor competes against the current in a coil which alters the direction and instantaneous magnitude. This opposition is comparable to resistance but always possesses a phase shift between voltage and current and dissipate zero. The abbreviation of Inductive reactance is XL, frequency of the signal will effect the value of XL.
Simply Put Inductive Reactance is Simply the Resistance of an Inductive circuit !