Tuesday, March 10, 2015

Day 03 03/03/2015 Dusk-to-Dawn Light


Have a Hot Dog trust me it tastes good ~ LOL ~!! 


Only horizontal light bulb is going to light up because of voltage potential


A review of what a voltage graph will transfer to a velocity vs time graph

Dusk-to-Dawn Light

The purpose of the lab is going to build a circuit that is light sensitive by connecting a bipolar junction transistor to be a current controller, When we obstruct the light like touch with finger the different voltage occur. 


On Theoretical When the it is light, the resistance is 20k, and 1.67V. 
When it is not light, the resistance is 5k and 3.33V.


Here comes the calculation of values of V for photocell resistances


start the lab


When we touch the photocell resistances the light bulb light up and its voltage decrease because our hand touch increase the resistance.



The result has proves my idea 

========================================================================
Class Note


No comments:

Post a Comment