Control of the Critical Angle of Reflection in an Optical Current Sensor

1997 ◽  
Author(s):  
G.A. Woolsey ◽  
N.E. Fisher ◽  
D.A. Jackson
Keyword(s):  
Critical Angle ◽  
Current Sensor ◽  
Angle Of Reflection

A Total reflection X-Ray Spectrograph for Fluorescent Analysis of Light Elements

1968 ◽  
Vol 12 ◽  
pp. 496-505 ◽  
Author(s):  
R. D. Davies ◽  
H. K. Herglotz
Keyword(s):  
Critical Angle ◽  
Incident Angle ◽  
Incident Beam ◽  
Wavelength Dependence ◽  
Light Elements ◽  
X Ray ◽  
Beam Incident ◽  
Open Window ◽  
Angle Of Reflection ◽  
Initial Results

AbstractA novel x-ray spectrograph for the analysis of light elements has been developed based on previous computations and confirming experiments by one of as (H. K. Herglotz). The major components of the instrument are an efficient fluorescent source, a totally reflecting mirror, and an open window photomultiplier. Identification of wavelengths in the range 15 < λ < 80 Å is achieved by the wavelength dependence of the critical angle of reflection of an x-ray beam incident on a suitably chosen low absorption reflector. As the incident angle is increased through the critical angle for a particular wavelength, the reflected beam intensity is sharply reduced; hence, a periodic vibration of the incident beam through a small angular range about the critical angle furnishes a strong a.c. reflected signal characteristic of one narrow wavelength band only.Initial results promise a simple, easy-to-operate instrument for the routine analysis of elements boron to fluorine.

Optical fiber current sensor based on Bi 4 Ge 3 O 12 crystal with enhanced Faraday rotation by critical angle reflections

2007 ◽  
Author(s):  
Meirong Wang ◽  
Wangmin Zhou ◽  
Peng Zhang ◽  
Jianlin Zhao ◽  
Hao Zhang ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Faraday Rotation ◽  
Critical Angle ◽  
Current Sensor ◽  
Optical Fiber Current Sensor

Miniature Faraday current sensor based on multiple critical angle reflections in a bulk-optic ring

1991 ◽  
Vol 16 (24) ◽  
pp. 1996 ◽  
Author(s):  
Y. N. Ning ◽  
B. C. B. Chu ◽  
D. A. Jackson
Keyword(s):  
Critical Angle ◽  
Current Sensor

Comparison of Dc-Dc SEPIC, CUK and Flyback Converters Based LED Drivers

2020 ◽  
pp. 99-107
Author(s):  
Erdal Sehirli
Keyword(s):  
Integrated Circuit ◽  
Closed Loop ◽  
Input Voltage ◽  
Open Loop ◽  
Current Sensor ◽  
Switching Frequency ◽  
Led Driver ◽  
Advantages And Disadvantages ◽  
Led Drivers ◽  
Conduction Mode

This paper presents the comparison of LED driver topologies that include SEPIC, CUK and FLYBACK DC-DC converters. Both topologies are designed for 8W power and operated in discontinuous conduction mode (DCM) with 88 kHz switching frequency. Furthermore, inductors of SEPIC and CUK converters are wounded as coupled. Applications are realized by using SG3524 integrated circuit for open loop and PIC16F877 microcontroller for closed loop. Besides, ACS712 current sensor used to limit maximum LED current for closed loop applications. Finally, SEPIC, CUK and FLYBACK DC-DC LED drivers are compared with respect to LED current, LED voltage, input voltage and current. Also, advantages and disadvantages of all topologies are concluded.

Integration of a Three-Phase and Zero-Phase Current Sensor Using a Coaxial Bar Structure

2006 ◽  
Vol 30 (6−1) ◽  
pp. 545-549 ◽  
Author(s):  
T. Kudo ◽  
T. Asada ◽  
S. Wakui
Keyword(s):  
Current Sensor ◽  
Phase Current ◽  
Three Phase ◽  
Zero Phase

Inspection of Surface Rolled Sintered Gears using Eddy-Current Sensor

2013 ◽  
Vol 133 (5) ◽  
pp. 300-306
Author(s):  
Tsutomu Mizuno ◽  
Yuichi Asato ◽  
Sho Goto ◽  
Takashi Watanabe ◽  
Teruie Takemasu ◽  
...  
Keyword(s):  
Eddy Current ◽  
Current Sensor ◽  
Eddy Current Sensor

Development of an Induction-Free Current Sensor for Application in Spot-Welding Current Control

2012 ◽  
Vol 132 (1) ◽  
pp. 58-66
Author(s):  
Yoshiaki Takasaki ◽  
Tatsunori Munesada ◽  
Toshikatsu Sonoda
Keyword(s):  
Spot Welding ◽  
Welding Current ◽  
Current Control ◽  
Current Sensor ◽  
Free Current

Basic Characteristics of Ion-balance/neutralizing Current Sensor for AC Corona Air Ionizer using Grounded Ring Electrode

2013 ◽  
Vol 133 (3) ◽  
pp. 72-76 ◽  
Author(s):  
Takashi Terashige ◽  
Yasuna Hirata ◽  
Nana Iwamoto ◽  
Kazuo Okano
Keyword(s):  
Ring Electrode ◽  
Current Sensor ◽  
Ion Balance ◽  
Basic Characteristics
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