Essays about: "low frequency currents"

Showing result 11 - 15 of 22 essays containing the words low frequency currents.

  1. 11. A Differential Measurement Probe with High Common Mode Rejection

    University essay from Lunds universitet/Industriell elektroteknik och automation

    Author : Björn Franzén; [2018]
    Keywords : Common mode rejection; Fiber-optic measurement probe; Current Sensing; High voltage measurements; Optical isolation; Technology and Engineering;

    Abstract : Measuring signals with high frequency common mode components are typically prone to measurement errors due to low common mode rejection at high frequencies. The purpose of this master thesis is to design a measurement probe that presents sufficient common mode rejection to measure current on high voltage motor drives directly at the switching stage, before filtering. READ MORE

  3. 12. Load-current response to severe changes of voltage

    University essay from KTH/Elektroteknisk teori och konstruktion

    Author : Shuhan Ma; [2017]
    Keywords : ;

    Abstract : Electric loads, such as computers, lamps, refrigerators and heaters connected to low-voltage distributionsystems in homes and offices differ widely in how their current responds to changes in the applied voltage.These voltage changes could be a total collapse of the voltage, a weak or strong reduction of amplitude,or a sudden phase-shift. READ MORE

  4. 13. Designing and Maximizing Switch-Mode Efficiency of MODPSU, the Modular Power Supply

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Niclas Arndt; [2016]
    Keywords : DC DC; SMPS; optimization; power supply; Technology and Engineering;

    Abstract : This work is an investigation into practical design and loss minimization of DC/DC-switched power supplies, enabling cooler operation, smaller size, and additional or wider areas of use. There is an abundance of switch controller ICs on the market and a few of the manufacturers offer very sophisticated design tools that suggest operating parameters and grade components. READ MORE

  5. 14. Vertical heterostructure III-V nanowire MOSFETs

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Adam Jönsson; [2016]
    Keywords : MOSFET; transistor; heterostructure; III-V; RF; semiconductor; silicon; fabrication; electronics; Technology and Engineering;

    Abstract : If cars had developed as fast as processors they would go at 470,000 mph, get 100,000 miles to the gallon, and cost 3 cents" claims Paul Ottelini, Intel CEO 2005-2013. This serves as a reminder of how fast the field of nanoelectronics is developing due to constant demand for faster and more energy efficient integrated circuits. READ MORE

  6. 15. Low-Frequency Noise in TFETs

    University essay from Lunds universitet/Fysiska institutionen

    Author : Markus Hellenbrand; [2015]
    Keywords : Tunnel Field-Effect Transistor; Steep-Slope Devices; III-V; InAs; GaSb; Broken Band Gap; Physics and Astronomy;

    Abstract : Nanowire tunnel field-effect transistors (TFETs) were investigated by carrying out noise measurements and low-temperature DC measurements. The TFET tunnelling junction was realised by a GaSb/InAs heterojunction resulting in a broken band gap. TFET noise currents were measured at frequencies between 10 Hz and 1 kHz. READ MORE