Thevenin's Theorem

By calculating our equivalent resistance we were able to simplify circuits into one resistor and one voltage source

FreeMat

Temperature dependent voltage

We worked on the lab with a temperature dependent resistor, after setting it up, the voltage changed when we applied heat from our fingers. The temperature change from 20 degrees to 37 degrees proved to change the voltage

Night light

we used a photo sensitive cell that created more resistance when not exposed to light. this activated our led light and created light when it was dark.

Mosfets

On 2/26 we did an experiment involving mosfets
mosfet channel will only open after a certain threshold is achieved.
Once this threshold is achieved the energy peaks and plataus at a point and gives steady energy.
By using the skills we learned last lab we were able to find this threshold at around 1.5 v, peaking around at 2.2 V

Solderless Breadboards, Open-circuits and Short-circuits

Purpose of this lab is to understand the equipment and basic circuits

We used breadboards and multimeters.

1. So we used multimeter to measure the resistance between two holes in the same row, there was little to none resistance

2. The resistance between two rows of holes on opposite sides of the central channel is very high, can be considered infinite

3. When we checked the resistance between two arbitrary holes of the breadboard, our multimeter recorded a very high resistance again.

4. When we used a jumper wire to connect two different rows on the bread board, we saw that the resistance was very low.


1 and 4 was short circuit due to low resistance and current flowing between them

2 and 3 was open circuit due to the infinite high resistance, no current was flowing between them

the resistance in 1 was around 0.7 ohms, closed circuit
the resistance in 2 was unmeasurable, higher than 1 million, open circuit
the resistance in 3 was unmeasureable, higher than 1 million, open circuit
the resistance in 4 was around 1 ohms, closed circuit