Results 31 to 40 of about 243,917 (303)

Single-phase frequency converter

open access: yesIOP Conference Series: Materials Science and Engineering, 2017
The paper presents a continuous voltage inverter - AC (12V / 230V) made with IGBT and two-stage voltage transformer. The sequence control transistors is achieved using a ring counter whose clock signal is obtained with a monostable circuit LM 555.
I Baciu, C D Cunţan
openaire   +1 more source

Design zero-voltage switching DC-DC buck converter [PDF]

open access: yes, 2014
This report proposes an integrated, high switching frequency, zero-voltage-switching dc-dc buck converter for battery charger application. The design and analysis of dc dc buck converter with integrated inductor is presented.
Chan, S. W.   +4 more
core   +1 more source

Analysis of Persistent Oscillation Mechanism and Low Frequency Coupling Characteristics of Power System From the Perspective of Grid-Connected Converter

open access: yesIEEE Access, 2021
The voltage disturbance in the weak grid will cause frequency coupling and even persistent oscillation of the grid current of grid connected converter in power system.
Qi Wang, Xingyong Zhao, Peng Wang
doaj   +1 more source

Automated methodology for adjustment of component values in passive converter circuit for wind turbine generators [PDF]

open access: yes, 2012
The current paper proposes an automated design approach for a previously developed passive converter circuits for wind turbine generators. This suggested approach allows to calculate the components for all passive converter circuits approved in European ...
Bekov, Emilian   +3 more
core   +1 more source

Design and analysis of variable switching frequency controlled integrated switched mode power converter for class C & class D appliances

open access: yesAin Shams Engineering Journal, 2018
Variable switching frequency current controller based integrated power factor corrected switched mode power converter for class C and class D appliances has been designed and analyzed in this work.
M. Subbarao   +2 more
doaj   +1 more source

microwave frequency converter

open access: yes, 2020
We report a broadband microwave frequency converterbased on a coherent Kerr optical micro-comb generatedby an integrated micro-ring resonator. The coherent micro-combdisplays features that are consistent with soliton crystal dynamicswith a free spectral range of 48.9 GHz.We use this to demonstratea high-performancemillimeter-wave local oscillator for ...
openaire   +2 more sources

Pneumatic analog-to-pulse frequency converter [PDF]

open access: yes, 1969
Pneumatic analog-to-pulse frequency converter circuit has output pulse frequency proportional to the pressure level of the input signal. Converter circuit drives a pneumatic stepping motor and is part of a pneumatic control system for nuclear powered ...
Dustin, M. O.
core   +1 more source

Sensorless multi-loop control of phase-controlled series-parallel resonant converter [PDF]

open access: yes, 2014
This paper proposes a multi-loop controller for the phase-controlled series-parallel resonant converter. Output voltage is solely measured for control and inner loop is used to enhance closed loop stability and dynamic performance compared to single-loop
Aboushady, A.A., Ahmed, K.H.
core   +2 more sources

Survival Outcomes and Complications Among Canadian Children With Retinoblastoma: A Population‐Based Report From CYP‐C

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Retinoblastoma (RB) is the most common pediatric ocular cancer, yet population‐based data on survival and risk factors remain limited. This study aimed to describe survival in a large national RB cohort and identify predictors of death and complications.
Samuel Sassine   +14 more
wiley   +1 more source

Research on continuous restrictive pulse train controlled switching converter

open access: yesGong-kuang zidonghua, 2018
For larger low-frequency oscillation of pulse train(PT) controlled switching converter under inductor current continuous conduction mode (CCM) which could degrade operation performance of switching converter, a continuous restrictive pulse train (CR-PT ...
LI Shanshan   +3 more
doaj   +1 more source

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