Electrical Differences in AC and DC Cooling Fans

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The most obvious difference between AC cooling fans and DC cooling fans is the type of electricity that they use. DC cooling fans use direct current (DC) electrical flows. This type of electrical flow can only move in one direction. AC cooling fans, however, use alternating current (AC) charges that can change direction quickly. The use of DC or AC current might seem insignificant, but it can produce very different results. There are, therefore, specific uses for AC and DC cooling fans.

Voltage of AC and DC Cooling Fans

In general, AC cooling fans have motors that use higher voltage than DC cooling fans, so the AC models are often used to produce high pressure air currents in systems that will not malfunction because of the fan’s electromagnetic interference. Most DC cooling fans operate at low voltage. You can generally find 5V, 12V and 24V versions; and in larger sizes, from 119mm to 172mm, in 48V. In comparison, 115V is one of the most common AC cooling fan models.

Uses of AC and DC Cooling Fans

All types of computer equipment rely on DC cooling fans to prevent them from overheating. This includes everything from large servers to home PCs. The advantage of DC cooling fans is that they create less electromagnetic interference. This enables them to cool computer systems without disturbing processes with electromagnetic interference.

When choosing DC cooling fans for your computer, you might find that some of them are rated as 48VDC instead of 5V, 12V, or 24V. This is perfectly normal. VCD is simply another way of stating the amount of voltage that the fan uses. While the DC and VCD differentiation makes no difference, you should be certain to choose brushless models for your computer cooling needs.

Installing AC and DC Cooling Fans

Always use caution when installing AC or DC cooling fans. It is best to make sure that any equipment is unplugged before attempting to install fans. Both DC and AC currents can cause serious damage to humans when delivered in powerful doses. Even though most modern home electrical systems will not deliver a deadly jolt, a slight slip could still cause significant pain or even tissue damage.

Choosing AC and DC Cooling Fans

Before buying AC or DC cooling fans for your home’s temperature control system, home entertainment center, or computers, you should conduct some research to make sure that you choose an effective model. The differences between AC and DC cooling fans are significant to many machines, as is the differences between the voltages that they use. Most manufacturers include information about the types of fans that consumers should use in their products. If you cannot find this information, then try to replace the existing fan with a comparable model.

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