연세대 전기전자 기초실험 chapter. 5 (2017년판) 예렙+결렙

소개

2017학년도 1학기 전기전자응용실험을 수강하면서 작성한 레포트들입니다.
예비레포트+결과레포트로 구성되어있으며, 성적은 A+를 받았습니다.
처음 실험하시는 분들에게 참고용으로 좋을 것 같습니다.

목차

1. 예비보고서
2. 결과보고서

본문내용

1. Text
1-1. Experimental Result
In this experiment, we designed ‘Fan system’ with Wheatstone bridge containing adjustable resistor, operational amplifier, DC motor and 5-level LEDs. Centerd on Arduino, the Wheatstone bridge and op amp correspond to the input stage while the DC motor and the 5-level LED correspond to the output stage. First, we designed Wheatstone bridge which consists of 4 regular resistor and 1 adjustable resistor. By using adjustable resistor, we were able to generate a voltage that could have a specific range of values ​​rather than a fixed value. The next step was to amplify the voltage from the Wheatstone bridge using the Op Amp. In this stage we can get voltage which have range enough to be sensed and distinguished by Arduino. Arduino is sensing output voltage of Op Amp as analog input and generate digital output voltage depending on input values. Finally we were able to control 5-level DC motor and LEDs through Arduino digital output voltage. [Figure. 1] show the overall circuit of ‘Fan system’

참고자료

· Electric Circuits tenth edition Nilsson/Riedel
· Microelectronics second edition Behzad Razavi
· PPT Slide of Chapter #5
· Electronichub WheatStone Bridge, 「www.electronicshub.org」
· Wikipedia DC motor, 「en.wikipedia.org」
· Youtube - DC Motor, How it works?, 「www.youtube.com」