Types of Sources:
Independent & Dependent sources:
If the voltage of the voltage source is completely independent source of current and the current
of the current source is completely
independent of the voltage, then
the sources are called as
independent sources.
The special kind of sources in which the source voltage or current
depends on some other
quantity in the circuit which may be either a voltage or a current anywhere
in the circuit are called
Dependent sources or Controlled sources.
There are four possible dependent sources:
a.
Voltage dependent Voltage source
b.
Current dependent Current source
c.
Voltage dependent Current source
d.
Current dependent Current source
The constants of proportionalities are written as B, g, a, r in which B &
a has no units, r has units
of ohm & g units of mhos.
Independent sources actually exist as physical
entities such as battery, a dc generator & an
alternator. But dependent sources are used to represent electrical properties
of electronic devices
such as OPAMPS & Transistors.
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