Transistor Switcing

January 12, 2016
In this lab we learned how a transistor works like a relay to switch the flow of electricity. We used a breadboard, 150 ohm resistor, a 10K ohm resistor, a 330 ohm resistor, a 2N3904 transistor and a switch to create a current the lights the LED. In the following experiment we looked into fingertip switching. We just used the transistor, a resistor and some jumper wires to light the LED with our fingers. The bulb lit when it came in contact with our fingers because our fingers are conducting positive voltage to the base of the transistor. Although our skin has a high resistance as well as only a trickle of voltage reaching the transistor; the transistor still responds. throughout these experiments we used an Ammeter to measure how much current was running through each of the trials we set up