1 변철민 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ.

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Presentation transcript:

1 변철민 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ.

2 변철민 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. 1. 차동 증폭기 2. Instrumentation Amplifier 3. IA 응용 Contents

3 변철민 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. Differential Amp V cm - + R1 R2

4 변철민 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. Differential Amp => 단점 : 입력에서 부하효과 발생 + - R1 R2 + - R3 RG R1 R2 이득조 절

5 변철민 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. 계측용 증폭기 1 단 차동 입력 - 차동 출력 증폭기

6 변철민 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. 계측용 증폭기 2 단

7 변철민 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. 계측용 증폭기 입력저항 매우 큼 출력저항 매우 작음 전압이득 : 가변가능 CMRR 최대 튜닝가능

8 변철민 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. 계측용 증폭기의 응용 + - “Ground loop” 해결 Stray Capacitor Balanced Transmission 다르다 잡음 발생

9 변철민 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. Thank You!