Hi everyone!
I have a simple question, but I have the impression I'm missing some important concepts of circuits. (especially open en short circuits)
this is the given circuit:
Asked is to give the norton equivalent of this circuit from A to B with the help of superposition.
turning off all the sources gives Ri=1kΩ
What I did further:
turning off the current source:
2 resistances in serie => Ik,1=6V/2kΩ = 3mA
turning off the voltage source:
the voltage over the 1kΩ is 3mA*2kΩ=6V
the currents are in parallel => Ik,2=3mA+(6V/1kΩ)=9mA
=> Ik=Ik,1+Ik,2=12mA
But when I don't think about superposition I can clearly see Ik=6mA due to 3mA+(6V/2kΩ)
What did I do wrong? I think there's a concept about short/open circuits I'm missing.
PS: sorry about the embarassing Paint-skills
I have a simple question, but I have the impression I'm missing some important concepts of circuits. (especially open en short circuits)
this is the given circuit:
Asked is to give the norton equivalent of this circuit from A to B with the help of superposition.
turning off all the sources gives Ri=1kΩ
What I did further:
turning off the current source:
2 resistances in serie => Ik,1=6V/2kΩ = 3mA
turning off the voltage source:
the voltage over the 1kΩ is 3mA*2kΩ=6V
the currents are in parallel => Ik,2=3mA+(6V/1kΩ)=9mA
=> Ik=Ik,1+Ik,2=12mA
But when I don't think about superposition I can clearly see Ik=6mA due to 3mA+(6V/2kΩ)
What did I do wrong? I think there's a concept about short/open circuits I'm missing.
PS: sorry about the embarassing Paint-skills