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Electronics 101 – Resistors & Resistance Part 1

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Electronics

Electronics Class – Room 101

Here I teach the novice all about electronics.

This is Part 1 in a series all about resistors and resistance.

I provide commentary while showing various type of resistors: carbon film, metal film, precision, variable, ceramic and wire wound. I also show a series parallel resistance network and measure the voltages with a voltmeter. Resistors vary in wattage. The wattage rating indicates the amount of power that can be dissipated by that resistor. At some point resistors burn out. Lower resistances burn out with high currents. High resistances burn out due to high voltage. Using Ohm’s Law you can calculate circuit voltage, current and resistances. E=IxR I=E/R R=E/I. Ohm’s Law is easy to use and remember because of a simple pie chart you can draw anytime. Cover the value you don’t know and calculate the answer. Resistors always go ‘open’ circuit when they fail. A resistor can be anything the conducts electricity. Even wire has resistance. Hope you enjoy and learn a little something.

You can click on this link to watch Part 2 http://www.youtube.com/watch?v=zYra8Yp_DRA

You may also enjoy this video as well http://www.youtube.com/watch?v=Ftc3EQGZowk

©Copyright 2010 D.C. Boyce. Cranial Sponge Productions.

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