Paper Title
Electrical Circuits and Electronic Tools

An electrical circuit is a network consisting of a closed loop, giving a return path for the current. Linear electrical networks, a special type consisting only of sources (voltage or current), linear lumped elements (resistors, capacitors, inductors), and linear distributed elements (transmission lines), have the property that signals are linearly superimposable. They are thus more easily analyzed, using powerful frequency domain methods such as Laplace transforms, to determine DC response, AC response, andtransient response. A resistive circuit is a circuit containing only resistors and ideal current and voltage sources. Analysis of resistive circuits is less complicated than analysis of circuits containing capacitors and inductors. If the sources are constant (DC) sources, the result is a DC circuit. The part of an electrical circuit that is between the electrons' starting point and the point where they return to the source is called an electrical circuit's "load". The load of an electrical circuit may be as simple as those that power electrical appliances like refrigerators, televisions, or lamps or more complicated, such as the load on the output of a hydroelectric power generating station. Circuits use two forms of electrical power: alternating current (AC) and direct current (DC). AC often powers large appliances and motors and is generated by power stations. DC powers battery operated vehicles and other machines and electronics. Converters can change AC to DC and vice versa. High-voltage direct current transmission uses very big converters. The design and creation of electronic devices and systems requires meticulous attention to detail. Mobile apps for electrical engineers provide a wide range of capabilities that can make life easier for anyone working with electronics. There are apps that provide reference materials, wire-gauging tools, resistance calculators, and visual references for resistors and other components, and generally encyclopedic access to all the information an electrical engineer would need to make important decisions about a project. The apps in this collection cater to users of all skill levels, from pro electrical engineers to amateur household electricians. Many of them are available for both Android and ions, and some even have a desktop or browser based edition. They’re listed in no definitive order. Most are free or inexpensive, and they’re well worth the price for the wealth of electrical engineering info they put in your pocket. We investigate principles of electronical circuits and tools through this paper. Keywords— Circuit, Tool, Electrical, Electronic.