single-stage balanced forward-flyback converter merging a foward and flyback converter topologies is proposed. The conventional AC/DC flyback converter can achieve a good power factor but it has a high offset current through the transformer magnetizing inductor‚ which results in a large core loss and low power conversion efficiency. And‚ the conventional forward converter can achieve the good power conversion efficiency with the aid of the low core loss but the input current dead zone near zero cross AC
Premium Transformer Inductor
r θ Ι2 Ι1 R α ι x Figure 1: 2. An inductor has an inductance which is found experimentally to be of the form L= 2L0 1+x/x0 where L0 =30 mH‚ x0 =0.87 mm‚ and x is the displacement of movable element. Its winding resistance is measured and found to equal 110 mΩ. (a) The displacement x is held constant at 0.90 mm‚ and the current is increased from 0 to 6 A. Find the resultant magnetic stored energy in the inductor. (b) The current is then held constant at 6 A‚ and the
Premium Magnetic field Inductor Electric current
ABSTRACT The effect of equivalent series resistance (ESR) of an output capacitor on the performance of a constant -on-time(COT)-controlled buck converter is studied and a pulse bursting phenomenon is revealed. It indicates that the ESR of the output capacitor is one of the key factors causing pulse bursting phenomenon in COT-controlled buck converters‚ and the critical ESR is derived via. It is pointed out that ‚ when the ESR of the output capacitor is smaller than the critical ESR ‚pulse bursting
Premium Capacitor Time Inductor
course is for you to master the use of electronic test equipment. The devices we will be using include DC power supplies‚ breadboards‚ digital multi-meters ”DMM”‚ oscilloscope and a function generator‚ as well as some resistors‚ capacitors and inductors‚ so we can have something to measure on. By the end of this experiment you should be able to tell how to use the equipment to measure voltage‚ current resistance‚ inductance‚ capacitance‚ frequency‚ period‚ rms voltage‚ peak-peak voltage‚ phase
Premium Electrical resistance Alternating current Series and parallel circuits
be connected across the first bulb‚ so that each bulb may get proper current at the proper voltage. (a) Compare electric circuit and magnetic circuit by their similarities and dissimilarities. (b) Derive an expression for the energy stored in an inductor of self inductance ‘L’ henry carrying the current of ‘I’ amperes. OR (b) A mild steel ring of 30 cm mean circumference has a cross-sectional area of 6 cm2 and has a winding of 500 turns on it. The ring is cut through at a point so as to provide an
Premium Electromagnetism Alternating current Inductor
IEEE 2006 Custom Intergrated Circuits Conference (CICC) X/Ku Band CMOS LNA Design Techniques Bagher Afshar‚ Ali M. Niknejad Berkeley Wireless Research Center‚ Dept. of EECS‚ UC Berkeley‚ Berkeley‚ CA 94704‚ USA Abstract— This paper reports two 11 GHz low-noise amplifiers (LNA) in 0.18µm CMOS technology. A cascade two stage LNA achieves 12 dB of power gain‚ 3.5 dB of noise figure‚ and an input/output match of −15 dB/−27 dB at 11GHz‚ while consuming 28mA from 1.8V supply. The second LNA is a modified
Premium Inductor Transistor Impedance matching
Wireless Charger for Low Power Devices Chapter 1 1.1 Introduction We live in a world of technological advancement. New technologies emerge each and every day to make our life simpler. Despite all these‚ we still rely on the classical and conventional wire system to charge our everyday use low power devices such as mobile phones‚ digital camera etc. and even mid power devices such as laptops. The conventional wire system creates a mess when
Premium Magnetic field Inductor Transformer
Lab 10 Low Pass and High Pass Filters Objective To study the behavior of RC and RL circuits when they are connected to AC power supply. Material Function generator‚ resistor‚ capacitor‚ inductor‚ wires‚ breadboard‚ oscilloscope Procedure RC Low Pass Filter We use a 10KΩ resistor and a 0.01μF capacitor in a series and prepare a function generator and a oscilloscope. Next‚ we measure the each voltage by changing the frequency (Start from 10‚ 20‚30‚50‚70Hz). The measurement repeats
Premium RC circuit Inductor
Electrotechnology Lab Report Aim: To investigate and analyse single-phase transformers in a circuit Objectives: To determine the approximate equivalent circuit of a single-phase transformer so the transformer can be modelled‚ predicted and analysed. Equipment: TecQuipment electrical machines teaching unit NE8010 or NE8013 B-phase transformer (EMTU-TT01) One Hameg HM-8115-2 Power meter Wires Introduction and theory of Transformers: Transformers are simple‚ energy transfer
Premium Transformer Magnetic field Inductor
INSTRUCTIONAL MANUAL IN ALTERNATING CURRENT CIRCUITS An Instructional Manual Presented to the Faculty of the Graduate School Western Institute of Technology La Paz‚ Iloilo City In partial fulfillment of the Requirements for the Course EGC 600 – RESEARCH by Engr. boysie t. tejada March 2012 INSTRUCTIONAL MANUAL IN ALTERNATING CURRENT CIRCUITS An Instructional Manual Presented to the Faculty of the Graduate School Western Institute of Technology La Paz
Premium Alternating current Electrical engineering Electricity