AoE 1.12 Thevenin equivalent of a voltage divider.

123

01:15:11

Vin = 1v at open circuit
R1 = 1k
R2 = 1k
Rload = 1k

Press and hold the button to find out the I-thev.

Vth = Vin*(R2/(R1+R2))
Vth = 900/1900=0.526V

So then let's get R-thev
Rth = Vth/Ith
Rth = 0.526v/1.11mA = 474 Ohm

So then if we apply a load parallel to R2 it will behave exactly as if we'd connect or in series with our Rthev.

And it is! Both circuits show usage of 213uA.
Hooray!

published 7 years ago

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.