D7 - Superposition and Source Transformation

We started the day with a lab so motivate people to arrive on time.
Time-varying Signals:
Prelab pictures.

Picture of the wave forms for lab. This one is of the triangle wave. Sine and square wave picture was lost.

Picture of the circuit used, r1 and r2 both 1k ohms.

Picture of waveforms together, notice the edge left on each square, feeding circuit.

White board work of equation used to derive numbers.

White board representation of the wave used to put into circuit.

The value gotten from the waveform program. This one is from the sine wave.

The value gotten from the waveform program. This one is from the triangle wave.

The value gotten from the waveform program. This one is from the square wave.

We then talked about linearity property. And then to super position. We then tried out some examples.

White board work linearity property.

Another picture showing our answer of -1.8V

We then did a superposition example.

White board work. Do one loop and then the other, and add them for the element in question.

We then worked on the second lab of the day.
Superposition 2:

Picture of the circuit used for superposition.

White page work for finding equivalent resistance by source transformations.

White page work of finding equivalent resistance for the other "side" by use of source transformations.

White board values of V expected versus measured. Percent error.

White board work with numbers of real versus measured.

Another picture with percent error.

Another picture with percent error for resistors.

Lastly we did a source transformation example in class. White board work below.

White board work of source transformation.

In summary:
We started the lab with a lab using diligent wave form. Used one waveform to feed sine, triangle and square waves and recorded their useful values such as amplitude, frequency, and period. We talked about linearity properties, superposition and source transformation and using all three can help diagnosed circuits. We did our second lab of the day with the superposition, which we took out one side of power did work, and then did the other and summed the values to get the end result. Our percent error was l% and lower for the voltages recorded.