Lab and Classroom Activity ENGR 44 3/2/2017

Lab and Classroom Activity ENGR 44 3/2/2017

CLASSROOM ACTIVITY:

Calculating the number of branches, loops, and nodes

Calculating the potential difference between point A and point B in a circuit:

LAB:

Today we did the "Resistors and Ohms Law - Voltage - Current Characteristics" Lab, and the "Dependent Sources and MOSFETs" lab.

"Resistors and Ohms Law - Voltage - Current Characteristics"
Setup:

Measuring the current:

Measuring the Resistance of the resistors (when connected to the circuit)

This is the resistance of the resistors as it stand by itself:

We played around with the power supply value, adjusting the V, while recording the R value. This gives us the result below:

Our resistor value is measured at 96.8244 through the experiment, although when measured using the DMM it is measured at 100.0.

MOSFET LAB:

Setup:

**Make sure in the analog discovery, yellow cable is connected to the + side while black cable is connected to the - side of the circuit **

Making sure the power is on (look at the power supply tab)

When clicking the wavegen tab:

Clicking the wavegen tab gives an interface where we could change to the voltage we want.

Below is the result that we obtained from the MOSFET lab

Summary:

The MOSFET requires certain amount of Voltage for it to close the circuit, and it tops out/ level off after certain voltage; in our case it was 1.55 V starting voltage, and levels off at around 4 volts at 43.8 mA.

Overall, the graph obtained looks like one of a logistic function. It looks like it is similar to a linear function in the middle before it levels off.