FET explaination

[Doc Moddin']

This thread got me thinking some more. Here are some abbreviations and simple formulas to demonstrate the relationship between the different values.

I = Current. Measured in Ampheres or, "Amps"

V = Voltage. Measured in Volts.

R = Resistance. Measured in Ohms.

P = Power. Measured in Watts

V = I x R

P = (I)2 x R

Sorry, that "2" is supposed to be an exponent. I - squared. My old computer used to allow me to make superscripts for exponents.

To simplify, P = I x V

Here's a cool link for a voltage-drop calculator:

http://http://www.electronicsteacher.com/electronics-calculator/voltage-drop-calculator.php

Hope that wasn't confusing. I also hope it explains how an FET modifies current, without changing voltage.

--Doc