# Recent content by babygodzilla

1. ### EIT / FE test, anyone taken it?

hmmm thats interesting. what other certifications are there for an electrical engineer?
2. ### Transistors (BJTs) confusion

Xez, thanks for your reply. I havent had the time to digest everything you wrote, yet, but i just wanted to say thank you :)

4. ### Transistors (BJTs) confusion

do you mind explaining this BJT inverter (NOT Gate) to me? http://www.ee.calpoly.edu/~dbraun/courses/ee307/F03/13/02_13_PhilippeGonzaga.html When Vin = 5V, how is V3 (or V base) = 0.83V ? How do we know what the current and the voltage drop across that resistor is? and how does the output V4...
5. ### EIT / FE test, anyone taken it?

is that so...? Hmm... i was recommended to take that test by someone who has a PE in Civil Eng. He said that test is recognized internationally, so if I want to work in some other country someday, and I do like to travel, that would definitely help he said. anyone else have taken this test?
6. ### EIT / FE test, anyone taken it?

how hard is the EIT / FE test? is it a good idea to take it?
7. ### Transistors (BJTs) confusion

wow ok this is much clearer now. some bulbs light up in my head. so, in this example's PNP circuit, VE = VB + 0.7v. Since there is a Resistor in series with the emitter, assuming R = 100 ohms, IB = 10 mA, IC = 10 mA * 200 = 2000 mA, IE = 2010 mA, VE = 100 ohms * ~2A = 200 V, and...
8. ### Transistors (BJTs) confusion

WOW! thanks for the very long explanation. i appreciate you taking your time. that'll take some time for me to digest. i think you're right, i dont have a good grasp on the concept of BJTs just yet. many things u said in #2 still sound like gibberish to me, like this one: why does the...
9. ### Transistors (BJTs) confusion

Hi all, I hope you guys can help me with my confusions here: 1) I don't understand the usage of transistors as switches. Why would you use transistors as switches, and how does that work?? 2) Why would you choose a PNP over an NPN transistor. I've been reading this book and I don't...