Circuit Elements and Basic Rules - khu.ac.kr

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐1  Eung Je Woo 

Circuit Elements and Basic Rules

Elements of electric circuit

Source

Voltage source

Current source

Dependent source

Passive two-terminal electric component

Resistor

Capacitor

Inductor

Load

Light bulb, LED, speaker, heater, motor, etc.

ADC and digital devices

Voltage reference (earth ground, chassis ground and signal ground)

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐2  Eung Je Woo 

i-v characteristics

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐3  Eung Je Woo 

Resistor

Charge carrier or charged particle

External electric field and Coulomb force

Acceleration, collision and drift velocity

Mobility and concentration

Conductivity and resistivity

Geometrical effect, resistance, conductance and Ohm’s law

Specification and kinds of resistor

Value

Accuracy

Power

Kinds or compositions

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐4  Eung Je Woo 

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐5  Eung Je Woo 

Source

Ideal voltage source

Practical voltage source

Source resistance

Open-circuit voltage

Maximum current or maximum power

Loading effect

Load and load resistance

Overloading

Ideal current source

Practical current source

Source resistance

Short-circuit current

Maximum voltage or maximum power

Loading effect

Load and load resistance

Overloading

Controlled source

VCVS

VCCS

CCVS

CCCS

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐6  Eung Je Woo 

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐7  Eung Je Woo 

Circuit topology

Branch

Node

Loop

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐8  Eung Je Woo 

Mesh

Series

Parallel

Voltage reference

Signal ground

Earth ground

Chassis ground

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐9  Eung Je Woo 

Open circuit and short circuit

Kirchhoff’s current law (KCL)

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐10  Eung Je Woo 

Kirchhoff’s voltage law (KVL)

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐11  Eung Je Woo 

Power and passive sign convention

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐12  Eung Je Woo 

Series circuit, voltage divider and equivalent series resistance

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐13  Eung Je Woo 

Parallel circuit, current divider and equivalent parallel resistance

Series-parallel circuit

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐14  Eung Je Woo 

Wheatstone bridge

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐15  Eung Je Woo 

Voltmeter, ammeter, wattmeter and multimeter

Dept. of Biomed. Eng.  BME207: Basic Electronic Circuits  Kyung Hee Univ. 

http://www.ejwoo.com      2‐16  Eung Je Woo