Electrical engineering

MOSFETs with channel lengths of tens of nanometers. The difficulties with decreasing the size of the MOSFET have always been related with the fabrication procedure of the semiconductor device, the need for using very low voltages, and with inferior electrical characteristics. These obstacles have been making it necessary for redesigning of circuits and modernization of the fabrication process. Smaller MOSFETs are more desirable for several reasons. The main reason to reduce transistors size is…

4.1.4 Development of Feed Forward Control model in Simulink To implement feed forward control. Firstly, the transfer function of the linear DC Motor model has to be obtained. Actually in our case, the input of the plant is current so the transfer function of the mathematical model in ratio of angular velocity to current has to be obtained. It is given by: G(s)=Ω_1/I_a =R_A/K_M 1/(T_e s+1) where T_e=(J_meq R_A)/(K_m Cϕ) is electro-mechanical time constant. The feed forward control could be…

Motor & Gearbox The mirrors are required to rotate specific angles. To be able to achieve specific angles we need a stepper motor. The stepper motor is known to divide one revolution into equal steps which is our main requirements for the rotation of the mirrors. Figure ‎2-13: The Stepper Motor The following table shows the stepper motor specifications: Table ‎2-1: Stepper Motor Specifications Current 4.2 A Angle 1.8° Torque 8.34 N.m The desired torque calculated to withstand the mirror…

How Electro-mechanical Actuator Works? A Rotary Electromechanical Actuation system with an Electric Motor, a gear box & an elastic spring to absorb peak torque loads experienced during operational life. The Schematic below describes the system. Fig. 1.1 Rotary Electro-mechanical Actuator Gearbox Requirements: The Gear Box at the Motor Output is intended to amplify the torque output of the Motor with reduction in speed. The tentative ratio is set at 10:1. Functional Requirements of…

Have you ever heard of Samuel Morse? If you have then you know that he was a co-inventor of Morse Code. Morse Code is a systematic way of transmitting information via code and it is sent either from light or from off and on tones. Samuel Morse is known for much more than Morse Code, however. He originally gained his reputation for being a portrait painter and by helping invent the single-wired telegraph. Because of what is being called the Industrial Revolution many new inventions like Morse Code…

Technological innovations had a major impact on the U.S during the Gilded Age. Our major inventors were Thomas Edison and Nicola Tesla. Thomas Edison invented the DC light bulb however, Nicola Tesla invented the AC light bulb. Tesla worked under Edison as his apprentice when he was working on the light bulb. While Tesla was under Edison, JP Morgan was trying to find an industry that he could rise from the ground, and that's when he found Edison with electricity and the light bulb. JP…

The world as we know it, started to develop when the prehistoric humans discovered tools to supplement their needs and use it as an accessory to augment themselves to diversify the potential of their existence.**About 2.5 million years ago, the technology began to shape the mankind when humans used stone tools to hunt, start fires and bury their dead. Throughout the evolution from the stone age till today, humans have been immensely dependent upon technology to shape their world and provide…

Thomas Edison was an amazing man, and did amazing things for the world and America. He was an inventor who worked mainly with electricity and things that will help people with everyday things. He started out small and then he grew as a business and was one of the best inventors people say. And he works with all of this stuff to make him more determined and he had his mind set on this stuff. If Thomas Edison didn’t do what he did the world wouldn’t be the same as it is now. Thomas Edison was…

Do you like the vibe of grass under your feet, or the sand in the middle of your toes, well appreciate all the more unshod contact with the Earth, since that is the thing that Earthing or Grounding truly is! As a child we cherished strolling unshod all over the place... yes it was on account of it felt great on our feet, additionally in light of the fact that our bodies felt the advantages as well. In the event that we could backtrack to those days we would be in an ideal situation, the Earth…

1762-IF4 is an Allen Bradley MicroLogix 1200 System with 4 Channel Current/Voltage Analog Input Module. It has a dimension of 90 x 87 x 40.4 mm. It has Delta-Sigma converter and 4 differential (bipolar) inputs. It’s analog operating voltage range is -10 – 10 V DC normal and -10.5 – 10.5 V DC full scale. It’s analog operating current range is 4 – 20 mA normal and -21 – 21 mA full scale. It converts the analog input up to the full-scale range. It enhances the functionality of MicroLogix 1200…