1 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. Applied Electric Circuit REPORT #4 2012103843 원지혜.

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1 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. Applied Electric Circuit REPORT # 원지혜

2 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. Ex)1.4

3 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. 가변전원의 제작 부하효과 없애기 위해 버퍼 연결 참고 ) (1-t)R tR

4 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. 예)예)

5 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. Output Saturation 예 ) Saturation 되는 경우

6 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. Output Saturation

7 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. 단전원 OP AMP 2.5V 2.5V 만큼 Offset 전압 이 출력됨 ADC 범위 만족

8 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. I-V Converter ※ Trans-resistence OP AMP ※ High-sensitivity I-V Converter 보다 큰 GAIN 을 만들고 싶다면

9 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. OP AMP 의 선택 -FET(Field effect transister) 입력 op amp -low input bias current 를 가지는 것을 선택 예 ) Si Photodiode 0V -1.5V ①② ① V = 0V ② V = -1.5V -Low noise -Measurement -High speed -Detection 빛 증가 Reverse saturation Current 가 커짐 참고 ) 복사기 빛 감지 빛

10 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. V-I Converter 참고 )

11 원지혜 Dept. of Biomed. Eng.BME303:Applied Electronic CircuitKyung Hee Univ. Floating Load V-I Converter 예)예) load 최대 걸릴 수 있는 전압이 9V 이므로