Results 251 to 260 of about 264,488 (294)

The Output Circuit of a Biphasic Constant Current Electrical Stimulator

2017
An Electrical Stimulator (ES) can promote physiological benefits during rehabilitation of patients with spinal cord injury. One of the main circuits in an ES system is its output stage. This paper outlines a transformer-based output circuit topology and shows the results obtained during the development of the ES biphasic output.
R. R. Nogueira, D. C. Souza, J. C. Palma, G. N. Nogueira-Neto, P. Nohama   +4 more
openaire   +1 more source

The design of output stage circuitry for constant current neuromuscular stimulation

Images of the Twenty-First Century. Proceedings of the Annual International Engineering in Medicine and Biology Society, 2003
A 16-channel analog hybrid circuit has been designed, manufactured, and tested to provide functional neuromuscular stimulation to individuals with spinal cord injuries. The circuit generates a constant current, charge balanced, biphasic, asymmetrical waveform for both percutaneous and surface stimulation via the use of external current setting ...
A.C. Alm, R.J. Triolo, R. Kobetic, B. Smith, J.R. Buckett, G. Borges   +5 more
openaire   +1 more source

A study on constant current output control in wireless power transfer

2017 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), 2017
This paper introduces a closed loop control WPT system with LCL-LC resonance structure. The characters and advantages of this structure is analyzed. In the unstable environment such as changing bar voltage and lateral displacement, this system ensures constant current output to battery load with an efficiency above 80%, which is verified through ...
Bin Wei, Songcen Wang, Chao Gao, Xiaokang Wu, Jinxing Xu, Ying Liu, Fangtong Zhou, Chao Cui   +7 more
openaire   +1 more source

Constant-current output LCC wireless power transfer circuit

2018 IEEE MTT-S International Wireless Symposium (IWS), 2018
In this paper, a LCC-WPT behaving as a current source in certain condition and its optimization design method was investigated. The formula of output current has been deduced from wave base analysis, and efficiency optimization of resonance network has been designed.
Nan Yang, Jianyu Lan, Yong Liu, Xiaobin He, Zhangfeng Li   +4 more
openaire   +1 more source

A Constant Current Output System for ICPT without Complex Control

2018 International Symposium on Computer, Consumer and Control (IS3C), 2018
In view of the poor output stability and complex constant current control of the partial induction coupled wireless power transmission system, the present study proposes a push-pull inductively coupled soft-switching power transmission converter for series-parallel leakage inductance compensation, so that wireless power system can achieve constant ...
Mengran You, Shulin Liu, Shitong Tao
openaire   +1 more source

Analysis and design of a series resonant converter with constant current input and regulated output current

2017 IEEE Applied Power Electronics Conference and Exposition (APEC), 2017
Constant current dc distribution to series connected loads has been preferred for long distance high reliability systems such as undersea cabling for telecommunications and observation networks. In addition, some loads require constant current output, creating a need for high efficiency power supplies that provide a regulated current gain from input ...
Hongjie Wang, Tarak Saha, Regan Zane
openaire   +1 more source

Current dependence measurement of resistance using a cryogenic constant current source with linear output

Conference on Precision Electromagnetic Measurements. Conference Digest. CPEM 2000 (Cat. No.00CH37031), 2002
We developed a cryogenic constant current source with linear output by using a cryogenic current comparator. When changing the current supplied to a resistor, nonlinear change of its voltage drop corresponds to current dependence of its resistance. We used a Josephson potentiometer with high linearity to measure the voltage drop.
M. Nakanishi, J. Kinoshita, Y. Murayama, T. Endo   +3 more
openaire   +1 more source

A novel ICPT compensation topology with excellent constant current output characteristic

2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2016
Inductively Coupled Power Transfer (ICPT) attracts a lot of attention in recent years due to its convenience, safety, reliability and weather proof features. This paper proposes a novel ICPT compensation topology, named LC/P and consisting of an inductor, two capacitor and a loosely coupled transformer (LCT). Constant input voltage of LC/P compensation
null Yousu Yao, null Weifeng Guo, null Xiaosheng Liu, null Yijie Wang, null Dianguo Xu   +4 more
openaire   +1 more source

2.5A-Constant-Output-Current, Constant-T_off , 1.5 MHz, 89%-Efficiency Switching Converter

IEEE Transactions on Circuits and Systems II: Express Briefs
In this paper, a Constant-Output-Current, constant-Toff, buck-mode switching converter is presented. The device uses a Peak Current Mode Control (PCMC) with an integrated High-Side (HS) current sensing and, with typical voltage regulator solutions, delivers a constant output current. The proposed concept is validated by an IC prototype in a 0.35 μm BCD
Marcello Tettamanti, Florian Haller, Albino Pidutti, Paolo del Croce, Andrea Baschirotto   +4 more
openaire   +2 more sources

Analysis and Design of Constant Current/Constant Voltage Output of Array Multitransmitter Inductive Power Transfer System

International Journal of Circuit Theory and Applications
ABSTRACTWireless power transfer has been widely used in unmanned aerial vehicle (UAV) charging due to its convenient and flexible noncontact charging characteristics. The working area of the uncoupler inductive power transfer (IPT) system is limited, and ZVS is easily lost in phase‐shift modulation. This paper proposes a method for constant current (CC)
Da Li 0010, Pan Sun, Jianghua Lu, Enguo Rong, Yuan Li, Xusheng Wu, Qijun Deng   +6 more
openaire   +1 more source