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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