Lab Report #3

  1. 1a 0) take it to the bath room to make it wet 0.5) take it back and open the windows 1) turn the solder machine on. 2) I would wait for a few minutes for it to get heated up 3) I put solder on and see if it melts 4) if it doesn’t melt wait, if it does I wipe it with the wet sponge and make the tip look shiny
  2. 1b 1) I would turn it off. 2) wipe the tip with the sponge. 3) put it back to the hold 4) make sure nothing flammable is near the solder machine if
    2a) make sure we switch to the correct measuring units, and make sure the positive end line is connected to the right input’
  3. 2b) the power IV=0.25 W and so I=0.25/9.25 and so R=9/(0.25/9.25)=342.25 ohm the closest is 470 and its actually 461 so MEASURED current should be I=V/R=9.25/461=0.02A and its measured as exactly as calculated
  4. PART 3 i1=9.26/(1/(1/1000+1/1000+1/2200+1/3300))=0.0255mA i2=9.26 or you can do it like i2+i2+i3+i4+i5= 9.26/1000+9.26/1000+9.26/2200+9.26/3300 MEASURED 0.026A MEASURED i2 0.009A i3 0.009A i4 0.004A i5 0.003A so i2+i3+i4+i5=0.25A damn pretty close
  5. Now trouble shoot! When soldering the board is black don’t stay too long on it

Lab Report #2

3 random resistors

#1

Color codes: yellow purple red gold
Stated resistance value: 4.7k ohm
Tolerance: 5%
Min/max possible resistance: 4.5/4.9k ohm
Actual measured resistance: 4.62k ohm

#2

Color codes: orange orange red gold
Stated resistance value: 3.3k ohm
Tolerance: 5%
Min/max possible resistance: 3.1/3.5k ohm
Actual measured resistance: 3.18k ohm

#3

Color codes: red red red gold
Stated resistance value: 2.2k ohm
Tolerance: 5%
Min/max possible resistance: 2.09/2,31 k ohm
Actual measured resistance: 2.17k ohm

2) three resistors listed as 22k 47k 47k

measured 21.5k 44.4k 42.2k

CALCULATED SUM RESISTANCE 22k+47k+47k=116k

MEASURED SUM RESISTANCE: 114.0k

3)

three resistors listed as 22k 47k 47k

measured 21.5k 44.4k 42.2k

CALCULATED RESISTANCE: 1/(1/42.2+1/44.4+1/21.5)=10.78 ohm

MEASURED RESISTANCE: 11.21 ohm

4)

STATED: 47k, 47k

MEASUReD RESISTANCE: 44.4k , 42.2K

CALCULATED 44.4/(44.4+42.2)*9.56=4.90 v

MEASURED 4.77 v

5)

three resistors listed as 22k 47k 47k

measured 21.5k 46.0k 48.2k

CALCULATION: (46*21.5)/(46+21.5)+48.2+21.69+1/(1/21.55+1/45.96+1/21.56)=93.24 ohm

MEASURED:91.7 ohm

6)

CALCULATION: 21.69/91.7*9.56= 2.26v

MEASURED:2.26 v

7)

MEASURED RESISTANCe

R1 21.5 ohm
R2 21.69 ohm

R3 21.56 ohm

CALCULATED:

v1 21.5/(21.5+21.69+21.56)*9.56=3.17V

v2 21.69/(21.5+21.69+21.56)*9.56=3.2V

v3 21.56/(21.5+21.69+21.56)*9.56=3.18 V

MEASURED voltage:

V1 3.15 v

V2 3.19v

V3 3.18v

HELL all of this is accurate

troubleshoot:

no nothing

lab reprot #1

Hi I am Tiankai.

Here’s the link to the video of the circuit built.https://youtu.be/sHIuKKqgosk

Part 1: how breadboard works

On the left and right theres power rail (beside red line) and blue rail (beside right line). Battery Positive go to power rail and negative go to ground rail.

The center areas are connect through rows. So in current flows through the same row.

Part 2:

Below is the schematic graph:

Part three: multimeters:

So a multimeter can be used to test voltage, current, and resistance. It is composed of two test coils. the current should be flowing into red coil and goes out to black coil. And thats why red coil touch positive, and black on negative when testing. (It could go opposite, it’ll show the exact number but negative). It’s exactly precise in measuring.

Part 4: Analog Circuit Troubleshooting Notes (in memory):

1. One LED popped. I was trying to set up LED that controlled by light dependent resistance. I wired the resistance to the same row, so the flow didn’t go through it (it went through the grid, which has lower resistance). Solved by wiring to a different row.

2. Potentiometer didn’t work. I put it horizontal. Solved by putting it vertically.

Part 5 Good project ideas

Tia’s Boss amp is pretty cool. But the thing is that the recording sounds pretty much just like a distortion plugin, which really doesn’t sound like a amp, because the high frequency noise. The video sounds pretty legit though.

Paul’s guitar pedal is great, and the recording really sound like one. The oscillation really gives the warmth.

Sean Porio’s Nastifier deliver a high quality of sound too.

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