We began today with some practice using a multimeter. We conducted conductivity, resistance, and voltage measurements. Conductivity measurements were taken on the solder board we practiced on yesterday in order to confirm their connectivity. Voltage measurements were taken on 1.5 and 9V batteries, the power supply we constructed yesterday, and an unregulated power supply. We also measured the resistance of four different resistors after determining the value using the color code.
Today, we also used our power supply again in conjunction with a breadboard to create another simple circuit. However, this circuit was different in the sense that three of the same type LEDs were in series with three different resistors, and all of these series circuits were parallel to each other. The point was to observe that the circuit with the least resistance was the circuit with the brightest lit LED. Of course, the 100 ohm circuit was the brightest, the 1K ohm circuit came in second, and the 10K ohm circuit was incredibly dim.
We also constructed a circuit consisting of a potentiometer in series with a 100 ohm resistor and an LED. The purpose of this exercise was to observe how a potentiometer is capable of varying the resistance in a circuit. The brightness emitted by the LED of course varies with the amount of resistance.
Lastly we did inventory on the VEX square bot kits. Oh the times we had!
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