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Static in computer speakers

\015 When i turn on my computer, after about an hour I start hearing static, and it gets louder and louder over the next several min. i have moved most of the wires and other conectors that are atached to the computer, but i still hear alot of static\015

Answers :

While Hokuwho is correct as far as polarity and electrical noise goes, it is unlikely to be the issue here. Problems like that usually are present from the start. Another possiblity is the breakdown of a transistor in the audio amp circuit that drives the speaker. When the semiconductor starts to fail, it can get what is called "leaky". This often translates into random noise being generated and amplified by later stages in the system. The fact that the noise gets progressively worse as time goes on suggests a part breaking down because of heat. A simple test of making the problem appear and spraying "freeze spray" onto the electronics should prove the point. The spray should cause hte problem to disappear. This spray is available at any electronics supplier. Try that and let us know the results.
The ideal way to deal with noise on an electrical circuit is a dedicated receptacle from a dedicated circuit breaker. That is a requirement for service contracts from computers to cash registers.\015\012
\015\012Not knowing the environment you are in it could be a simple installation or an impossible dream. If the latter is closer then a good Uninterruptible Power Supply will work fine as well as providing back up power for about 20 minutes.\015\012
\015\012The "hot" conductor is not the only consideration as the "neutral" conductor is the collective return of everything else that is a load on the switchboard. To verify that this is the problem you are having you can connect to a receptacle that has nothing else powered by it's circuit breaker. Typically your laundry receptacle is like that in accordance with the National Electrical Code.\015\012
\015\012If the problem is still present then the computer power supply or a computer fan may be generating an unwanted harmonic. Just static from a carpet won't be present unless your are dragging the machine around ;)\015\012
\015\012I do this as a commercial electrician and network installation engineer so post back if you need any further assistance. \015\012Steve Medley
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