Editing Battery
Jump to navigation
Jump to search
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.
The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 1: | Line 1: | ||
== Basics == | == Basics == | ||
− | Many electronic devices run off batteries as their energy source. The ideal battery is a source of voltage, when connections are made to it current will flow, the amount depending on the connections. For the ideal battery the voltage will not fall when current is drawn, or time goes by. For real batteries none of this is true, but may be useful approximations. An improved model of a battery is that it is an ideal voltage source in series with an ideal resistor ( known as the internal resistance of the battery ) | + | Many electronic devices run off batteries as their energy source. The ideal battery is a source of voltage, when connections are made to it current will flow, the amount depending on the connections. For the ideal battery the voltage will not fall when current is drawn, or time goes by. For real batteries none of this is true, but may be useful approximations. An improved model of a battery is that it is an ideal voltage source in series with an ideal resistor ( known as the internal resistance of the battery ). |
Some of the most important characteristics of batteries: | Some of the most important characteristics of batteries: | ||
Line 13: | Line 13: | ||
Uses | Uses | ||
*Provides power to circuits. At any time the power is equal to the voltage of the battery times the current. When the battery is not connected, the current and the power are 0. | *Provides power to circuits. At any time the power is equal to the voltage of the battery times the current. When the battery is not connected, the current and the power are 0. | ||
− | *We will often use a | + | *We will often use a power supply in place of a battery. |
There are a surprising number of myths and urban legends about batteries (such as the "memory effect" near-myth and various ways of "fixing" it). | There are a surprising number of myths and urban legends about batteries (such as the "memory effect" near-myth and various ways of "fixing" it). | ||
Also the process of charging them up. | Also the process of charging them up. | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
Line 36: | Line 25: | ||
One I could program with various recharge protocols, to see which protocol is *really* the best for recharging secondary batteries. | One I could program with various recharge protocols, to see which protocol is *really* the best for recharging secondary batteries. | ||
And one that anyone could build to repeat the experiment. | And one that anyone could build to repeat the experiment. | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | + | ''Can I do that with the [[Smart Battery Charger with Graphical Data Logger]] ?'' | |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
== Further Reading == | == Further Reading == | ||
Line 78: | Line 46: | ||
* [http://arstechnica.com/science/news/2009/03/lithium-breakthrough-could-charge-batteries-in-10-seconds.ars "Lithium breakthrough could charge batteries in 10 seconds" by John Timmer 2009 | * [http://arstechnica.com/science/news/2009/03/lithium-breakthrough-could-charge-batteries-in-10-seconds.ars "Lithium breakthrough could charge batteries in 10 seconds" by John Timmer 2009 | ||
* [http://www.mouldy.org/rambles/The-Best-Batteries-In-The-World "The best batteries in the world..."] by ian 2006 ("rechargeable NiMH AA cells"?) | * [http://www.mouldy.org/rambles/The-Best-Batteries-In-The-World "The best batteries in the world..."] by ian 2006 ("rechargeable NiMH AA cells"?) | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
[[Category:Components]] | [[Category:Components]] |