Superposition Theorem Example (Electric Circuits)

This video goes through an example, examining voltage across and current through resistors in a circuit with two voltage sources (10V and 12V). To analyze the circuit, the superposition theorem is used - the circuit is analyzed in two stages. The first stage involves turning the 12V source off and leaving the 10V source on. All the currents and voltages are determined with this (sub)circuit. The second stage involves turning the 10V source off and leaving the 12V source on. All the currents and voltages are determined with this (sub)circuit too. The results are then added together (e.g. voltage across R1 from stage 1 is added to voltage across R1 from stage 2) to give the results for the circuit as a whole

00:05 - The circuit to analyze
00:47 - Stage 1. 10V source on, 12V source off
2:40 - Voltage and current calculations for Stage 1
5:36 - Results from 10V on/12V off
6:11 - Stage 2. 12V source on, 10V source off
7:30 - Voltage and current calculations for Stage 1
10:26 - Results from 12V on/10V off
11:05 - Voltages and currents for initial circuit

[matthewoverton]

Thank you. I like how you showed the voltage polarities. That tip helped me with equations I am doing.

[calabrese]

It’s not just that I like the new format of your videos but how I find them really helpful. Thanks again David.

[WestVision]

thanks. this is the best explanation ive seen on superposition theorem yet.

[picklerick]

Thanks for this video. It was very helpful as I was struggling to understand it when my instructor was teaching me.

[tomstrum]

Big thx for time Explaining this mentally Alien Abstract electrical circuit Personally & intellectually would Never entertain the mental Anguish drudgery of professionally Daily dealing with this nightmare despite the Potential job income...

[ld]

I may understand SuperPosition now but there is no chance I will understand how to write backwards on a board like you do! lol

[solosamuraiz]

Where did polarity come from? If u cancel out 12v wouldnt 3 ohm resistor polarity be opposite as its pos in the left side via 10v?

[MrGallinavoladora]

Why did the polarity change on the voltage drop? When you did the analysis of each voltage supply.Thanks

[emmanuelmabasa]

the video has been so helpful..thanks Man

[nicobriceno]

Awesome video. I would note that you can get an easier and quicker answer to solving the circuit by doing KVL in each loop and solving for currents 1 and 2, Since these elements are assumed to be behave linearly. By getting currents 1 and 2, you can solve the corresponding voltages across the resistors. I solved it this way and i got the same answers. Knowing this, i am just confused as to what came first and how to connect these ideas. Does KVL incorporate superposition through the currents ? OR is it better to think about these ideas separately?

[ckindly]

I would love to see some videos covering some push-pull amplifiers JFET, DMOS and EMOS amplifier configurations I'm really struggling with them right now.

[bretdupuis]

The video is great, i'll just have to swap to electron flow

[kaursingh]

sir =excellent -- sir u r from which country ? amarjit=india =thank u sir

[waynemcmurray]

I know its 3yrs too late 😂

But how come there is no current division in your workings out?