| 21. | Copper heat sinks are a necessity when higher levels of thermal conductivity are needed.
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| 22. | :: : : The finned aluminium block underneath the fan is the heat sink.
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| 23. | A variation on the straight fin heat sink is a cross cut heat sink.
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| 24. | Some heat sinks made from aluminum have a copper core as a trade off.
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| 25. | A variation on the straight fin heat sink is a cross cut heat sink.
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| 26. | This cools the heat sink and whatever it is in direct thermal contact with.
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| 27. | A straight fin heat sink is cut at regular intervals.
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| 28. | Because of the low power consumption, no additional cooling or heat sinks are required.
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| 29. | The heat source is positioned lower than the heat sink.
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| 30. | Heat conducted through the MCPCB and heat sink is dissipated by convection and radiation.
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