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AVR Programming Guides
We have some nice AVR code samples to share. Lots of AVR goodies like timers, interrupts, and pin I/O for the beginner. |
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Watts Tables
Use these tables to help you determine how much various items in your house cost you by the day, month, and year. |
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Saving Electricity
A list of a variety of ways to help you save money by learning how much it costs to run things. |
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Read Your Power Meter
By reading your power meter you can get a good idea of how much various electrical devices cost you. |
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What Is A Circuit Page 4
Not All Circuits Look Complete
In a previous guide we talked about using V+ and GND instead of a battery symbol in a schematic. Keep in mind that when you do that, your closed circuits will no longer make circles, but they are still closed circuits. Lets take a look at an example.
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Schematic Symbol
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Actual Image
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Above is a circuit consisting of a battery and a lightbulb. See how the schematic doesn't make a circle any more, but the real life example does? This is still a closed circuit and the light bulb is still lit.
Summary
In general, you can tell if you have a closed circuit using the following rule:
If the circuit works, then it's a closed circuit.
If you are using a motor, and the motor is turning then the circuit is closed. If you are using a buzzer and the buzzer is buzzing then your circuit is closed. When using a light bulb, the glowing light means you have a closed circuit. In all of these cases the part in question (motor, buzzer, light bulb) is doing what it is supposed to do, so your circuit is closed.
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