Lab Report #3

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
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’
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
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
Now trouble shoot! When soldering the board is black don’t stay too long on it