Solving a circuit with a dependent current source?

dbavaria · Mar 18, 2005

What is current ib? (aka current accross 2 ohm resistor).

The diamond shaped thing is a dependent current source that is dependent on ia (current across the 8 ohm resistor) and has a gain of 2 ( in other words it is 2ia).

Brandon · Mar 18, 2005

Originally posted by dbavaria@Mar 18 2005, 12:10 AM
What is current ib? (aka current accross 2 ohm resistor).

The diamond shaped thing is a dependent current source that is dependent on ia (current across the 8 ohm resistor) and has a gain of 2 ( in other words it is 2ia).

[post=6174]Quoted post[/post]
Click to expand...

Set up some nodal equasions

Ib=Ia+2Ia Current at top Node
R3*Ia= 42v - Ib*2 Voltage at top node
R2*2Ia=42v - Ib*2

these simplify down to this

Ib=3Ia
8*Ia=42-(Ib*2)
8*Ia=42-(Ib*2) <--- we can toss this one.

Ib=3Ia
8*Ia=42-(Ib*2)

Now we have a current equasion and a voltage equasion.
2 equasions, 2 unknowns, there you go. Basic algebra now.

Solving a circuit with a dependent current source?

dbavaria Thread Starter New Member

Brandon Senior Member

Circuit analysis with a dependent source (VCVS)

Finding the Thevenin voltage with a dependent source circuit

Finding Thévenin/Norton Impedence in a Circuit with Dependent Source

Thevenin Equivalent with a dependent source

DC Circuit Help with dependent current source

iPhone's Losing Its Headphone Jack—Designers Have Other Plans

Electric Cars Getting Much Needed Power Boost

NXP and Microsoft Collaborations Focus on Enhancing IoT Security