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2.0 General Questions
•( I ) Current is what flows in a wire or conductor like water flowing through a pipe. Current is measured in (A) amperes or amps. •( E ) Voltage is the difference in electrical potential between two points in a circuit. It's the push or pressure behind current flow through a circuit, and is measured in (V) volts. •( R ) Resistance determines how much current will flow through a component. Resistors are used to control voltage and current levels. A very high resistance allows a small amount of current to flow. A very low resistance allows a large amount of current to flow. Resistance is measured in ohms. •( P ) Power is the amount of current times the voltage level at a given point measured in wattage or watts. The relationships of Current, Voltage, Resistance, and Power are given here: A great example provided by Jason can be found Here by Macy edited by Riss_Centaur
The 12Volt.com Electrician.com MCsquared.com CrownAudio.com You can find many other useful calculators at 101Science.com rockotman suggested a demo download from Orcad that allows you to run their software to do layouts and analysis. There is a good link at Xtronics and another from Samengstrom.com. DannyG.com offers a nice little calculator to find Resistor Values from color codes. Resistor Color Codes are also being discussed Here. by Macy Some of our members posted several links where you may obtain printed circuit board fabricators, you can find that list here »Printed Circuit Board Fabricators . 