Problem Find and : Solution Three resistors are in series and their equivalent, , is parallel with the voltage source. So, according to the Ohm's law: . The negative sign comes from the direction . Applying KCL at the bottom node: . The lucky winner of the Electrical Circuits Contest #1 is Kunal Marwaha from […]

# Monthly Archives: October 2013

## Find Equivalent Impedance - AC Steady State Analysis

Determine the driving-point impedance of the network at a frequency of kHz: Solution Lets first find impedance of elements one by one: Resistor The resistor impedance is purely real and independent of frequency.

## Electrical Circuit Contest - Win $10!

What's up? We are going to have fun! This is our first contest for electrical circuits. Solve the problem, submit your answers and cross your fingers to be the lucky winner! Problem Find and :

## Superposition method - Circuit with two sources

Find using superposition rule: Solution Superposition The superposition theorem states that the response (voltage or current) in any branch of a linear circuit which has more than one independent source equals the algebraic sum of the responses caused by each independent source acting alone, while all other independent sources are turned off (made zero).

## Find Thevenin's and Norton's Equivalent Circuits

Find Thevenin's and Norton's Equivalent Circuits:Suppose that , and . Solution The circuit has both independent and dependent sources. In these cases, we need to find open circuit voltage and short circuit current to determine Norton's (and also Thevenin's) equivalent circuits.

## Solve Using Current Division Rule

A DC resistive circuit with two sources, one voltage source, one current source both independent solved using current division method.