can someone advice me on how the graph should look like for a circuit with diodes connected in series? Can we model the diodes this way? Attached picture shows the graphed charecteristic for 1 diode. If its for 3 diodes, how should the graph look like? Am i right to say that Vt will be 3 x 0.7v (Assuming the diode voltage drop is 0.7v) and value of Rd will be (3 x Rd) to model the resistance of the 3 diodes connected in series?