- #1

nomisme

- 29

- 0

I saw they use voltage division law to find the voltage at the input impedance(Zin) from a voltage source(Vs).

They do it like Vs * Zin/(Zin+Zs).

The problem came... We all know that we can determine the voltage only after considering all resistances in a circuit. They still have the transmission line and load impedance. If I denote them as Zt and Zl, wouldn't the voltage to the input impedance be Vs * Zin/(Zin+Zs+Zt+Zl) instead?

Because if you simply consider Vs * Zin/(Zin+Zs), the voltage wave will be zero after going through the input impedance before even entering the transmission line connected with a load on the other end. This doesn't make any sense.

Help.. If you don't understand what I am saying, please let me know.