Electronics: Parallel RL Circuits 1972 USAF Training Film TV2012EK

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REVIEWS SEVERAL METHODS OF SOLVING PARALLEL RL CIRCUIT PROBLEMS IN A GIVEN CIRCUIT WITH COMPONENT VALUE FREQUENCY AND APPLIED VOLTAGE KNOWN. POINTS OUT THAT BRANCH CURRENT AND TOTAL Z ARE FOUND BY OHM'S LAW. SHOWS HOW TOTAL CURRENT AND PHASE ANGLE ARE FOUND VECTORALLY AND TRIGONOMETRICALLY, AND POWER FACTOR IS DETERMINED TRIGONOMETRICALLY AND IN TERMS OF TRUE AND APPARENT POWER.

USAF training film TV2012EK

Originally a public domain film from the US National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.

The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).

http://en.wikipedia.org/wiki/RL_circuit

Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/

A resistor-inductor circuit (RL circuit), or RL filter or RL network, is one of the simplest analogue infinite impulse response electronic filters. It consists of a resistor and an inductor, either in series or in parallel, driven by a voltage source.

Introduction

The fundamental passive linear circuit elements are the resistor (R), capacitor (C) and inductor (L). These circuit elements can be combined to form an electrical circuit in four distinct ways: the RC circuit, the RL circuit, the LC circuit and the RLC circuit with the abbreviations indicating which components are used. These circuits exhibit important types of behaviour that are fundamental to analogue electronics. In particular, they are able to act as passive filters. This article considers the RL circuit in both series and parallel as shown in the diagrams.

In practice, however, capacitors (and RC circuits) are usually preferred to inductors since they can be more easily manufactured and are generally physically smaller, particularly for higher values of components...