scholarly journals Characteristics of Open-Loop Current Sensor with Temperature Compensation Circuit

2015 ◽  
Vol 16 (12) ◽  
pp. 8306-8313 ◽  
Author(s):  
Myung-Hwan Ku ◽  
Ju-Gyeong Park ◽  
Guee-Soo Cha ◽  
Dong-Hui Kim ◽  
Jong-Sik Choi
Keyword(s):  
Temperature Compensation ◽  
Open Loop ◽  
Current Sensor ◽  
Loop Current ◽  
Compensation Circuit

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.

Design of Ultrasonic Ranging Circuit Based on STC Microcontroller

2013 ◽  
Vol 722 ◽  
pp. 59-63
Author(s):  
Rui Luo ◽  
Zi Hong Zhang
Keyword(s):  
System Performance ◽  
Temperature Compensation ◽  
Measurement Accuracy ◽  
Environmental Temperature ◽  
Detection Distance ◽  
Compensation Circuit ◽  
High Measurement ◽  
Ultrasonic Ranging ◽  
Allowable Range ◽  
Market Promotion

In this paper, based on the 18B20 temperature compensation circuit for ultrasonic ranging circuit, can eliminate the influence of environmental temperature on ultrasonic velocity, this paper introduced the ultrasonic ranging system, the system includes ultrasonic transmitting circuit, receiving circuit and display circuit, the results of the experiment show that, the system detection distance can be up to 12M, the error is in the allowable range, the range finder the system performance is stable, high measurement accuracy, distance, has a certain practicality and market promotion value.

Temperature-compensation Circuit Techniques For High-density CMOS DRAMs

2005 ◽  
Author(s):  
Dong-Sun Min ◽  
Dong-Soo Jun ◽  
Sooin Cho ◽  
Yongsik Seok ◽  
Youngrae Kim ◽  
...  
Keyword(s):  
Temperature Compensation ◽  
High Density ◽  
Compensation Circuit ◽  
Circuit Techniques

Interferometric Fiber-Optic Electric Current Sensor for Industrial Application

2010 ◽  
Vol 437 ◽  
pp. 314-318 ◽  
Author(s):  
Nikolay I. Starostin ◽  
Maksim V. Ryabko ◽  
Yurii K. Chamorovskii ◽  
Vladimir P. Gubin ◽  
Aleksandr I. Sazonov ◽  
...  
Keyword(s):  
Electric Current ◽  
Industrial Application ◽  
Temperature Compensation ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Current Sensor ◽  
Sensor Output ◽  
Optic Sensor ◽  
Spun Fiber ◽  
Fiber Coil

The interferometric electric current fiber-optic sensor for application in industry is presented. The modified spun fiber is used for sensitive fiber coil of sensor. The sensor has accuracy of 0.5% at temperature range from -40°C to 60°C without necessity of additional temperature compensation. The range of measured current is 15 – 250 kA. A frequency band is 0 – 5000 Hz and a nonlinearity of a sensor output is ±0.15%.

Design of Automobile-Reversing Radar Control System Based on Ultrasonic

2013 ◽  
Vol 457-458 ◽  
pp. 872-877
Author(s):  
Yan Xin Yu ◽  
Rong Chun Sun
Keyword(s):  
Control System ◽  
Software Design ◽  
Temperature Compensation ◽  
Modular Design ◽  
Design Method ◽  
Main Program ◽  
Single Chip ◽  
Compensation Circuit ◽  
Program Module ◽  
Function Modules

Based on the principle of ultrasonic transit time ranging, this article describes that the microcontroller is used as the core to develop the ultrasonic distance-measurement automobile-reversing radar control system. The system includes both hardware and software parts. The hardware part mainly consist single-chip control circuit, ultrasonic transmitting and receiving circuits, temperature compensation circuit and voice alarm circuit. The software design part of the system was divided into several function modules with modular design method, such as main program module, temperature measurement module, voice alarm module and so on. The main program was responsible for dispatching management all the modules. Experiments show that this system can reach design requirement and has high value and broad application prospects.

An Open-Loop FBG-Based Magnetostrictive Current Sensor with Enhanced Sensitivity

2020 ◽  
Author(s):  
Alex Dante ◽  
Juan David Lopez ◽  
Ariadny da Silva Areas ◽  
Cesar Cosenza Carvalho ◽  
Regina Celia da Silva Barros Allil ◽  
...  
Keyword(s):  
Open Loop ◽  
Current Sensor ◽  
Enhanced Sensitivity
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