In this small article we will discuss this problem and some solutions that can allow eventually eliminate such noises.
first comment is that it is wrong to call this type of noise in this way, because in reality it is not electrical noise itself. Although the habit and we tend to call colloquially. In fact, the electrical noise is another entirely different concept related to the field of electricity / electronics. The other noise we are talking about is sound produced by vibration of electrical components in a circuit. colloquially call it precisely because electrical noise produce it electrical items). Specifically, this noise is produced capacitors (capacitances) and coils (chokes) under certain loads. Is also related to combinations of components, a graph can make noise with a power supply and motherboard specific, but changing the motherboard or the noise source may disappear.
An example of how to produce this noise: A coil generates a magnetic field (the electric and magnetic field are related, see Maxwell laws), and this field can produce physically vibrate the coil (a high frequency vibration .) By vibrating pressure waves generated high frequency, which is what occurs to us that we hear high-pitched sound. If the vibration produces a resonance effect, the effect is even higher (with some components that may aggravate the situation, depends on more things, so there are combinations of critical components).
sometimes I have suffered this problem on my computers, I remember my old GeForce 6600 that creaked like crazy about putting a game. Was passive, very quiet my PC (phantom 500 passive, a scythe ninja at low rpm, etc.), And the noise was unbearable to me.
An easy way to check if we have this kind of noise is to use the utility "Show 3D View" ATITool program, which shows a kind of hub. This cube is a high burden of consumption and fairly constant, which clearly tends to accentuate the noise "power" produced by our graphic if it is
Solutions
This problem has some solutions, I comment as follows:
Choose
- components that we know in advance that do not generate these noises :
may seem obvious, but it is the best possible solution to the problem. There are certain components that the quality of its elements are prone to this type of noise, and is best avoided. At the end of the article included a link where you can see a list of combinations of components noisy / not noisy. The most successful is to find components that include solid state capacitors and inductors, ferrite as conveniently encapsulated and isolated.
- Component Change:
Obviously this is the last solution we want for obvious reasons ... additional cost to us and stop using compoenentes we already have.
- Change electrical load components:
Changing the load to be the source can get the problematic elements vibrate at different frequencies and stop producing the problem. Sometimes some undervolting or overvolting in micro or chart solves the problem. In my case, a former micro (Athlon64 3200 +) by simply varying the voltage 0.01V, making noise let the system.
- Force vsync in Figure :
Many modern graphics make this type of noise when calculating too many frames per second. Enabling the vsync option in many cases reduces the noise (by limiting the number of frames per second to monitor refresh rate). This works for example with many GTX260/GTX280.
- Improving nutrition noise filtering: Often
the problem comes from a dirty electric signal to the input of PC (electrical noise that is really ...). You can try to filter out the noise of the input with a voltage stabilizer (a ups for example) or similar. In many cases this eliminates the problem (by eliminating stray voltage frequency). Have also been reported cases where simply changing the power cable on the other PC also solves the problem.
- Search capacitors / coils that make noise, soundproof :
This is the most elaborate, is to identify and isolate problematic elements using a material (Liquid / resin) to coat. You can even use substances such as nail polish or glue (such as "Loctite"). The method for doing this are explained in this article .
Finally, add a link to a discussion forum which is updated n3D a list of noisy and not noisy combinations of different users: Combinations
noisy / not noisy
