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cansu paksoy

Page history last edited by cansu 11 years, 9 months ago

lab1

2a)
I used red LED so in order to limit current to 30mA, I needed X ohm resistance.

2b)
R is the minimum resistance. (V = IR) if resistance go down, current go up and LED might fail.

2c)
0-10kohm
I measured the resistance range of potentiometer with multimeter.

3a)
The resistor and LED are in series and hence the order of the components between the power and ground doesn't matter.

4a)
V = IR
(9-1.85) = 0.03 x R
R = 283ohm

my button circuit:
http://www.youtube.com/watch?v=ZDLYwnFoUtE

my potentiometer circuit with 9V battery:
http://www.youtube.com/watch?v=Zfft_tROtyE