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Short Circuits - March 16
Submitted by amanda on Thu, 02/21/2008 - 1:16pm.
Are you geeking out on a project right now?
Open Circuit is looking for people to share their technology projects! Our next event, Short Circuits on March 16, is a chance for YOU to share a project you are working on or technology you are excited about. The idea is that folks will have 10 minutes (we are strict about the time limit) to present some sort of technology-related project they are working on -- be it hardware, hands-on, web, animation, whatever is interesting you right now. Open source projects are particularly encouraged!
This is a great opportunity for you to hear about new projects, give and get feedback and meet other people doing cool things with technology -- for good, and not evil.
If you are interested in sharing, please email us at oc@tcopencircuit.org.
The cost of the event is $10, $5 if you are already a member of Open Circuit, or the sliding-scale cost of becoming a member paid then. Coffee & snacks will be provided.
Short Circuits will take place from noon to 5pm on March 16 at Sunday's Energy in the Ivy Building at 27th Ave. and 26th St. in south Minneapolis.
This event is cosponsored by Twin Cities Open Circuit and the Twin Cities Media Alliance.
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Short Circuits
A short circuit (sometimes abbreviated to short or s/c) in an electrical circuit is one that allows a current to travel along a different path from the one originally intended. The electrical opposite of a short circuit is an "open circuit", which is an infinite resistance between two nodes. It is common to misuse "short circuit" to describe any electrical malfunction, regardless of the actual problem homes for sale.
A short circuit is an abnormal low-resistance connection between two nodes of an electrical circuit that are meant to be at different voltages. This results in an excessive electric current (overcurrent) limited only by the Thevenin equivalent resistance of the rest of the network and potentially causes circuit damage, overheating, fire or explosion. Although usually the result of a fault, there are cases where short circuits are caused intentionally, for example, for the purpose of voltage-sensing crowbar circuit protectors debit cards.
In circuit analysis, the term short circuit is used by analogy to designate a zero-impedance connection between two nodes. This forces the two nodes to be at the same voltage. In an ideal short circuit, this means there is no resistance and no voltage drop across the short. In simple circuit analysis, wires are considered to be shorts. In real circuits, the result is a connection of nearly zero impedance, and almost no resistance. In such a case, the current drawn is limited by the rest of the circuit.
An easy way to create a short circuit is to connect the positive and negative terminals of a battery together with a low-resistance conductor, like a wire. With low resistance in the connection, a high current exists, causing the cell to deliver a large amount of energy in a short time health insurance.
A large current through a battery can cause the rapid buildup of heat, potentially resulting in an explosion or the release of hydrogen gas and electrolyte, which can burn tissue and may be either an acid or a base. Overloaded wires can also overheat, sometimes causing damage to the wire's insulation, or a fire. High current conditions may also occur with electric motor loads under stalled conditions, such as when the impeller of an electrically driven pump is jammed by debris; this is not a short, though it may have some similar effects insurance.
In electrical devices, unintentional short circuits are usually caused when a wire's insulation breaks down, or when another conducting material is introduced, allowing charge to flow along a different path than the one intended.