Two types of circuit elements.
- Active
- Passive
Active
Capable of generating electrical energy.
- Voltage sources
- Current sources
These can interchangeably be used.
Voltage sources
- Batteries - electrochemical
- Solar cells - photo voltaic
- Generators - electromagnetic
Ideal voltage source
Constant voltage for any required currents. Does not exist.
Passive
Either consumes or stores electrical energy.
- Resistors
- Capacitors
- Inductors
- Any other elements