How Does Internal Resistance Affect Diode Load Line Graphs?

[M. next]

Hello there,
I have 2 questions:

1)What's the difference between the load line graph of a circuit having (a DC supply, diode with no internal resistance, and a resistor R) & another circuit having (a DC supply, diode WITH internal resistance, and a resistor R)?

2)If we have a circuit supplying the diode with DC voltage, let's say of value (E) - can we conclude from that the Vm (Maximum Voltage) if DC source was replaced by AC one (of the form V=Vmsin(ωt)? Can we? :S

 

[NascentOxygen]

I have 2 questions:

1)What's the difference between the load line graph of a circuit having (a DC supply, diode with no internal resistance, and a resistor R) & another circuit having (a DC supply, diode WITH internal resistance, and a resistor R)?

What are your thoughts on this?

2)If we have a circuit supplying the diode with DC voltage, let's say of value (E) - can we conclude from that the Vm (Maximum Voltage) if DC source was replaced by AC one (of the form V=Vmsin(ωt)? Can we? :S

Your question is not phrased sufficiently clearly for my understanding.

 

[M. next]

What's not clear about my second question? What exactly?
And what do you mean by " What are your thoughts on this?"

 

[gnurf]

What's not clear about my second question? What exactly?

Exactly the whole question. Can you please re-phrase it in proper english?

 

[alphysicist]

1) The load line graph of a circuit with a diode and no internal resistance will have a steeper slope compared to a circuit with a diode and internal resistance. This is because the internal resistance of the diode will limit the current flow and therefore affect the voltage drop across the diode. In the first circuit, the diode will have a constant voltage drop regardless of the current, whereas in the second circuit, the voltage drop will vary with the current due to the internal resistance.

2) No, we cannot conclude the Vm (maximum voltage) of an AC source by knowing the DC voltage applied to the diode. This is because the behavior of a diode changes when an AC source is applied, and it will not have a constant voltage drop like in the DC case. The Vm will depend on the frequency and characteristics of the AC source, and cannot be determined solely by the DC voltage.