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  The Different Types of Electrical Wires and Cables By Megan Tung A  wire  is defined as one electrical conductor, while a cable is defined as a group of individually insulated wires (conductors) encased together in sheathing. Sheathing is a non-conducting material with protective properties to shield the conducting part of the wire/cable. Although wire is a good conductor, it can still have some resistance. Wires and cables can be made from various materials, such as copper, gold, and aluminum. The materials each have different resistances. Thick wire will have a lower resistance than thin wire made from the same material. Resistance of the wire can change proportionally with change in temperature or length of the wire. Wire size indicates the diameter of the metal conductor of the wire. When choosing the size of wire, you must consider the gauge of the wire, wire capacity, and what the wire will be used for. If the wire is too small, too much current will be sent throu...

Resistor Color Code Chart The chart below shows how to determine the resistance and tolerance for resistors. The table can also be used to specify the color of the bands when the values are known. An  automatic resistor calculator  can be used to quickly find the resistor values.

How to Test Diodes with a Digital Multimeter Digital multimeters ,  Fundamentals Digital multimeters  can  test diodes  using one of two methods: Diode Test mode: almost always the best approach. Resistance mode: typically used only if a multimeter is not equipped with a Diode Test mode. Note:  In some cases it may be necessary to remove one end of the diode from the circuit in order to test the diode. Things to know about the Resistance mode when testing diodes: Does not always indicate whether a diode is good or bad. Should not be taken when a diode is connected in a circuit since it can produce a false reading. CAN be used to verify a diode is bad in a specific application after a Diode Test indicates a diode is bad. A diode is best tested by measuring the voltage drop across the diode when it is forward-biased. A forward-biased diode acts as a closed switch, permitting current to flow. A multimeter’s Diode Test mode produces a small voltage between test...

  What Are Cables Made Of? This is a step-by-step guide to what cables are made from, from start to finish. Here we will follow the process to see how the raw materials become a finished cable. It is quite the journey. Let's begin! For this article, we will start off with raw copper, which is a highly demanded chemical element that is used in many cables and electrical wiring. It is extremely valuable for the fact that is it remarkably moldable, fully recyclable, and that it is an excellent conductor of electricity. Extracting a Metal from an Ore First, to find out how wires are made, we will explore how copper is obtained from an ore. There are a few different ways to conduct this operation. The first step begins when miners collect an ore from the earth. Copper ore is found in mines throughout different parts of the world; mainly in South America and Asia. The United States is currently ranked as the fourth largest copper producer, with active mines in about eight states. When an...

  List of 5 Different Types of LED The wide implementation of LED has advanced features like small size, robust, durable, long-lasting, consumption of minimum power, and has instant switching. Because of these reliable features, the LED gained more attention in a huge set of people. Students, engineers, electronic enthusiast loves to work with LED in their projects. 1. Dimmer Switches The LED is available with dimmer switches similar to other bulbs. The dimmer switch in normal incandescent bulbs doesn’t work well when compared to dimmer switch with LED bulbs. So it is advisable to replace standard bulbs with LED bulbs as it operates with minimum wattage than other standard bulbs. 2. Color LED The color LED attracts every person and is available in three varieties like cool white LED, warm white LED, daylight LED. Most of the home use halogen bulbs which are warm white. The color in the daylight LED which has stark white and hint blue in it which is mainly used for highlighting the ...

            T he application of technology, programs, robotics or processes to achieve outcomes with minimal human input .      Automation includes  using various equipment and control systems such as factory processes, machinery, boilers, heat-treating ovens, steering, etc .  Examples of automation range from a household thermostat to a large industrial control system, self-driven vehicles, and warehousing robots           Automation   describes a wide range of technologies that reduce human intervention in processes, namely by predetermining decision criteria, sub process relationships, and related actions, as well as embodying those predeterminations in machines. [1]   Automation has been achieved by various means including   mechanical ,   hydraulic ,   pneumatic ,   electrical ,   electronic devices , and   computers , usually in combination. Complicated...

The  voltage  is equal to the current flowing in a circuit multiplied by the resistance of that circuit, according to Ohm's Law.  The base unit of  resistance  in an electrical system is the ohm.  Furthermore, an ohm is an  Electrical Resistance  between two points of a conductor that results in the creation of a current of one  Ampere  in the conductor when a constant potential difference of one volt is applied to the points. A  volt  is the amount of potential required to send one ampere of current through one ohm of resistance.  One  watt  is the product of one ampere and one volt. One  ampere  of  current  flowing under the force of one volt produces one watt of energy. Fundamentals of Electricity