Results 21 to 30 of about 8,454,807 (248)

Compact high-energy Q-switched cladding-pumped fiber laser with a tuning range over 40nm [PDF]

open access: yes, 1999
We describe a compact Q-switched diode pumped double-clad ytterbium-doped fiber laser. The fiber laser was bidirectionally pumped by two laser diodes (2W of output power each) via two side-injecting pump-couplers.
Renaud, C.C.   +9 more
core   +1 more source

Energy harvesting from conducted electromagnetic interference of fluorescent light for Internet of Things application

open access: yesETRI Journal, 2022
A novel energy harvesting technique that uses conducted electromagnetic interference as an energy source is presented. Conducted EMI generated from fluorescent light using a switched-mode power supply was measured and modeled as an equivalent voltage ...
Chang-Hee Hyoung, Jung-Hwan Hwang
doaj   +1 more source

Critical review of converter topologies for switched reluctance motor drives [PDF]

open access: yes, 2007
This paper represents an overall literature review of SRM convenient drive circuit topologies with the proposal of a new topology utilizing switched capacitance circuit.
Elwakil, ES, Darwish, MK
core   +6 more sources

Implementation Possibilities of SMD Capacitors for High Power Applications

open access: yesElectrical, Control and Communication Engineering, 2012
Focus is on implementation possibilities of surfacemount device (SMD) to be used in high power applications. SMD capacitors reduce the size and dimensions of a power circuit and increase the flexibility of placement of other components.
Janis Zakis, Dmitri Vinnikov
doaj   +1 more source

Accurate Extraction of Noise Source Impedance of an SMPS Under Operating Conditions [PDF]

open access: yes, 2010
An accurate measurement method to extract the common mode (CM) and the differential mode (DM) noise source impedances of a switched mode power supply (SMPS) under its operating condition is developed and validated.
See, Kye Yak   +9 more
core   +1 more source

Nitriding of Long-Term Holes in the Cyclic-Commuted Discharge

open access: yesЖурнал інженерних наук, 2023
The effect of anhydrous nitriding in a glow discharge on microhardness, phase composition, and wear resistance of long holes in steels C45, 37Cr4, and 41CrAlMo7 with direct current supply and in cyclically switched discharge (CSD) was studied.
Stechyshyn M.   +2 more
doaj   +1 more source

Modelling of Switched Mode Fly-back Supply for Engineering Education

open access: yesAdvances in Electrical and Computer Engineering, 2010
This paper presents a modelling method useful in the education process for the study of DC-DC power conversion principles using pulse width modulation converters. In this paper, the proposed modelling method is applied to a switched mode Fly-back supply.
TRIP, N. D., LUNGU, S., POPESCU, V.
doaj   +1 more source

An inspection circuit for AC and DC power supply and its control method

open access: yes机车电传动, 2022
In view of the problem that the train need be switched in AC and DC power supply system, an inspection circuit and control method were designed to inspect the AC and DC power supply system.
HUANG Hao   +3 more
doaj  

Simulation of Active Magnetic Bearing Response based NNC [PDF]

open access: yesEngineering and Technology Journal, 2009
The present work is dealing with the modeling, investigations, and controlling, of a prototype radial magnetic bearing system. Considerations based on the 8 poles model with switched mode power supply.
Naseer Qassim Hamoody, Adil Hameed Ahmad
doaj   +1 more source

Characteristics of Q-switched cladding-pumped ytterbium-doped fiber lasers with different high-energy fiber designs

open access: yes, 2001
We theoretically and experimentally analyze Q-switched cladding pumped ytterbium-doped fiber lasers designed for high pulse energies. We compare the extractable energy from two high-energy fiber designs: (1) single- or few-moded low-NA large mode area ...
Alvarez-Chavez, J.A.   +7 more
core   +1 more source

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