A bias and control circuit for gain stabilization in avalanche photodiodes

2012 ◽  
Author(s):  
S. Deng ◽  
A.P. Morrison ◽  
J. Hayes
Keyword(s):  
Avalanche Photodiodes ◽  
Control Circuit ◽  
And Control

scholarly journals The multilevel inverter with clamped-diode

2019 ◽  
Vol 14 (3) ◽  
pp. 1189
Author(s):  
Trong-Thang Nguyen
Keyword(s):  
Numerical Simulation ◽  
Circuit Design ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Control Circuit ◽  
Multilevel Inverter ◽  
Power Circuit ◽  
Advantages And Disadvantages ◽  
Multi Level ◽  
And Control

<p>In this study, the author analyzes the advantages and disadvantages of multi-level inverter compared to the traditional two-level inverter and then chose the suitable inverter. Specifically, the author analyzes and designs the three-level inverter, including the power circuit design and control circuit design. All designs are verified through the numerical simulation on Matlab. The results show that even though the three-level inverter has a low number of switches (only 12 switches), but the quality is very good: the total harmonic distortion is small; the output voltage always follows the reference voltage.</p>

scholarly journals Estimation of the Effects of Distortion on the Longitudinal Stability of Swept Wing Aircraft at High Speeds (Sub-Critical Mach Numbers)

1954 ◽  
Vol 5 (5) ◽  
pp. 280-322
Author(s):  
B. S. Campion
Keyword(s):  
Control Circuit ◽  
Superposition Method ◽  
Swept Wing ◽  
Longitudinal Stability ◽  
Fighter Aircraft ◽  
High Speeds ◽  
Mach Numbers ◽  
The Individual ◽  
And Control

SummaryThe effects of distortion on the longitudinal stability of swept wing aircraft at high speeds (sub-critical Mach numbers) are considered on a quasi-static basis. The method is based on the theory of Gates and Lyon but involves some extension of this theory.The treatment of wing distortion is considered in some detail and the effects of built-in twist and camber and wing weight are included, using the so-called superposition method. The application of the analysis of Lyon and Ripley for investigating fuselage, tail and control circuit distortion is suggested, but means of modifying and simplifying this procedure where desirable are put forward.The analysis is illustrated by means of a simple example of a swept wing fighter aircraft for which wing, fuselage and tail distortion effects are considered, and the results are discussed with reference to the individual and combined distortion effects, as well as the effect of compressibility.

Study of Flow Characteristics and Control Circuit on High-Speed Solenoid Valve

2012 ◽  
Vol 619 ◽  
pp. 107-110 ◽  
Author(s):  
Wen Hua Li ◽  
Wen Lin Shao
Keyword(s):  
High Speed ◽  
Flow Characteristics ◽  
Pulse Signal ◽  
Solenoid Valve ◽  
Control Circuit ◽  
Duty Ratio ◽  
Time Sharing ◽  
Small Current ◽  
Wide Range ◽  
And Control

Through the analysis of the flow characteristics of the high-speed solenoid valve, the conclusions that the PWM signal duty ratio is the main factor affecting the solenoid valve flow is obtained, a new available any PWM pulse signal and control circuit are proposed. Further, circuit schematic is simulated by means of SIMULINK tools in MATLAB environment and Verify its stability. A time-sharing drive circuit is design based on the PWM drive mode. The driver circuit have function which is high-current open, small current maintain. Open current and maintain current of Solenoid valve can be adjusted through this circuit. Therefore, the circuit can adapt to different parameters of the solenoid valve. A wide range of applications.

Study on Pumping Units with Wind Power Generation Complementary Power Supply System

2011 ◽  
Vol 361-363 ◽  
pp. 479-482
Author(s):  
Wen Bin Cai ◽  
Kang Du ◽  
Xing Peng ◽  
Hua Yang Liu
Keyword(s):  
Power Generation ◽  
Wind Power ◽  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Wind Power Generation ◽  
Control Circuit ◽  
Energy Transmission ◽  
Electric Network ◽  
And Control

The wind power generation pumping unit has environmental protection and the energy-saving function with wind power generation complementary power supply system. Based on the calculation of the pumping power consumption during the oil production, the essential wind-power generation electric quantity for pumping equipment runs stable was analyzed, wind-electricity and electric network complementary energy transmission and control circuit were designed, When the wind speed changes, by the energy transmission and control circuit related parameters and taking the historical meteorological statistics of the corresponding period as the comparison reference, the system can control wind power generation and the battery charge and discharge flexibly to ensure the equipment runs stable, which lays a firm foundation for the wide application of the off-grid wind power. The economic analysis shows that the wind-electricity and electric network complementary pumping machine has good economic efficiency and application prospect in oilfield.

A FPGA-Based Long Distance Temperature Measurement System and Control Circuit

2012 ◽  
Vol 203 ◽  
pp. 111-115
Author(s):  
Yu Zhong Li
Keyword(s):  
Temperature Measurement ◽  
Measurement System ◽  
Field Programmable Gate Array ◽  
Measurement Methods ◽  
Control Circuit ◽  
Contact Method ◽  
Long Distance ◽  
Field Programmable ◽  
Temperature Measurement System ◽  
And Control

Temperature measurement methods always including contact method and non-contact method, generally speaking, non-contact method used for detecting remote measuring objects temperature, in especially as to particular occasions such as factory workshop. This paper provides a system based FPGA(field programmable gate array)for accurate measure and analysis long distance objects temperature. The system could be used in process of industrial produce fabrication.

Design and Implementation of an Electrically Control Circuit for Undulating Fins of Fish-Like Robot

2010 ◽  
Author(s):  
Ahmad Ghanbari ◽  
Mohsen Siahmansouri ◽  
Mir Masoud Seyyed Fakhrabadi ◽  
Seyyed Reza Hashemi Nesaz
Keyword(s):  
Mechanical System ◽  
Electrical Circuit ◽  
Control Circuit ◽  
Control Board ◽  
Wireless System ◽  
Design And Implementation ◽  
Revolution Speed ◽  
Density Control ◽  
And Control ◽  
Phase Differences

In this study, firstly, we compare various kinds of imitator robots and then by investigating of various fish robots properties, we design a mechanism and control circuit for a kind of these robots which its structure was inspired from knife fish. This robot has a segmental anal fin in its bottom which produces required force for advancement and maneuver. It consists of two servomotors and uses a kind of mechanical system to change direction and depth which is presented in this work. Another property of this robot is the existence of density control box for robot suspension which increases its capability for freight. The required signals are sent to this robot to produce the movement and maneuver by using a control handle and a wireless system which are installed on a control board. Therefore, it is possible to control the robot from out of the pool. In this paper, an electrical circuit is designed to control servomotors which enables us to control revolution, speed and phase differences of neighbor servomotors in fins. We also control two servomotors to regulate direction and depth.

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