Week 1
1.
The class format on a triweekly format consists
of:
Table 1: A Weekly Outline for
Circuit Lab
Weekly Schedule for Circuit Lab


Time

Monday

Outside of Class

Wednesday

Friday

Outside of Class

8:00
am

Quiz Discussions

Respond to comments

Lab

Finish blog entries
Comment on 2 blogs
Takehome
quiz


8:30
am

Lab intro


8:45
am

Lab


9:00
am

Blog Commenting


9:15
am


9:30
am

Blog Discussion


9:45
am

Wrap it up!

Wrap it up!

Quizzes (15) make up 45% of the class,
blogs (15) reports 30%, midterms (2) 10%, and the final exam (1) 15%
2.
Important safety rules:
 Do not work alone when working with energized electrical equipment.
 Make sure the power is off when assembling a circuit. Remember that capacitors store charges and are to be handled with caution even after the power source is removed from the circuit
 Never touch electrical equipment while standing on a wet or metal floor. In addition never touch electrical equipment with wet hands.
 When measuring data in live circuits be sure to put one hand behind the back to prevent current from flowing
 Wearing jewelry on your wrists or hands can be hazardous and it is advised to remove them or use added caution when wearing them.
 Never lunge or grasp at falling circuit components, whether they are live or not, circuit components have metal leads that could pierce your skin.
 Never touch two pieces of equipment at the same time. This completes loop and allows current to flow. To be safe never touch any aspect of the circuit with your bare hands, it could deliver a shock. In addition, some components release high levels of heat, which can cause burns.
 Ask the instructor before hooking up the circuit to power.
3.
Current is the lethal force that will kill you. Low levels of current
can be completely benign or cause a small tingly sensation; this is at level of
.001 amps to .01 amps. Current higher than .01 amps can cause the muscle
paralysis that forces the person being shocked to continue to hold onto the
current source. This is dangerous because prolonged exposure can make breathing
difficult and painful shock. When current is .1 to .2 amps death occurs.
Interestingly enough current over .2 amps isn’t instantly lethal. There is
enough current to keep you alive. This is because the heart is in a clenched
state that doesn’t allow for ventricular fibrillation to occur, but the current
causes severe burns and causes you to stop breathing.
4. Link for video demonstration on how to read resistor color code (https://youtu.be/Sc0sTWF0eUI)
6. A chart proving that all of our resistors were in the tolerance range:
Resister Band Value (ohms)

Tolerance

Range (ohms)

Measured Value (ohms)

160 ohms

5% (0.05)

152 ohms168 ohms

158.31 ohms

1500 ohms

5% (0.05)

1425 ohms1575 ohms

1503.22 ohms

67 ohms

None this was 5 band and the 5^{th} band color was white so
there is no tolerance for this specific resister.

67 ohms (because it has no tolerance, its range can fluctuate up and
down, it’s fixed)

67 ohms

27.2 ohms

10%

24.48 ohms 29.92 ohm

27 ohms

20.1 ohms

10%

18.09 ohms  22.11 ohms

20 ohms

20.2 ohms

5%

19.19 ohms  21.21 ohms

20 ohms

25.2 ohms

10%

22.68 ohms  27.72 ohms

25.1 ohms

39.1 ohms

5%

37.145 ohms  41.055 ohms

39 ohms

2200 ohms

5%

2090 ohms  2310 ohms

2202 ohms

100 ohms

5%

95 ohms  105 ohms

101 ohms

7. When using a multimeter to measure the voltage and current two different techniques need to be used. When you are measuring the current you need to break the current loop and attach the multimeter where you broke the current loop. This is because the current needs to travel through the multimeter. When measuring the voltage across a resistor you touch each lead of the resistor with the multimeter. You do this to observe how much voltage a particular component is using.
8. The power supply will give you 2 different options of voltages. The first would be the fixed position all the way to the left. This position will give you a constant 5V, and no you cannot change the voltages of this position, it will always be 5V. The other option is 0.24V coming from both the A and B power supplies. Yes, you can change this voltage higher or lower depending on what voltage your looking for. Also applying current will help to get more voltage out of these 2 power supplies.
Picture of Group 10 measuring the voltage through a resistor 
10.
A table demonstrating how Ohm's Law can be used to find calculate the value of a resistor 
Picture showing the setup used to measure values for a particular resistor 
13. You could use this motor with a wheel attached to it to charge a capacitor. The wheel would have an LED attached to it which would spin with the DC motor. When the LED passes directly in front of a light sensor the current can be sent through and charge a capacitor which would then release the charge to push a ball.
The text was very easy to understand and read. The captions were also helpful.
ReplyDeleteI like your Rube Goldberg idea, reminds me of Looney Tunes.
ReplyDeleteGood RG idea. Best captioning. Great tables. Keep up the good work.
ReplyDelete