Dept. of Biomed. Eng. BME207: Basic Electronic Circuits Kyung Hee Univ. http://www.ejwoo.com 10‐1 Eung Je Woo Bipolar Junction Transistor (BJT) BJT as amplifier
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Dept. of Biomed. Eng. BME207: Basic Electronic Circuits Kyung Hee Univ.
http://www.ejwoo.com 10‐1 Eung Je Woo
Bipolar Junction Transistor (BJT)
BJT as amplifier
Dept. of Biomed. Eng. BME207: Basic Electronic Circuits Kyung Hee Univ.
http://www.ejwoo.com 10‐2 Eung Je Woo
BJT as switch
pnp and npn BJT
Structure and symbol
Current and voltage of three terminals (base, emitter and collector)
i-v characteristics
Cut-off region
Active linear region
Saturation region
Breakdown region
Dept. of Biomed. Eng. BME207: Basic Electronic Circuits Kyung Hee Univ.
http://www.ejwoo.com 10‐3 Eung Je Woo
Dept. of Biomed. Eng. BME207: Basic Electronic Circuits Kyung Hee Univ.
http://www.ejwoo.com 10‐4 Eung Je Woo
Dept. of Biomed. Eng. BME207: Basic Electronic Circuits Kyung Hee Univ.
http://www.ejwoo.com 10‐5 Eung Je Woo
Bias circuit analysis
Large signal model
Quiescent point (operating point) and load line
Dept. of Biomed. Eng. BME207: Basic Electronic Circuits Kyung Hee Univ.
http://www.ejwoo.com 10‐6 Eung Je Woo
Dept. of Biomed. Eng. BME207: Basic Electronic Circuits Kyung Hee Univ.
http://www.ejwoo.com 10‐7 Eung Je Woo
Small signal model and analysis
CE amplifier
CB amplifier
CC amplifier
Dept. of Biomed. Eng. BME207: Basic Electronic Circuits Kyung Hee Univ.
http://www.ejwoo.com 10‐8 Eung Je Woo
10_23.jpg
Dept. of Biomed. Eng. BME207: Basic Electronic Circuits Kyung Hee Univ.
http://www.ejwoo.com 10‐9 Eung Je Woo
Diode gate and BJT gate (TTL)
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