The majority of DC fans are low-voltage fans. PRO: Lower voltageĭC fans generally use less voltage than AC fans. Because they are so quiet, DC fans are an excellent option for applications such as medical instruments, telecom switches, or car entertainment systems, where noise could be a nuisance. Not only are these motors ultra-efficient, they are also incredibly quiet. PRO: Acoustically QuieterĭC fans make use of a new type (sin180) of electronically commutated motor (ECM). Sensitive electronic devices often use DC fans to prevent electromagnetic interference.įor example, computer applications and equipment rely on DC fans, to prevent overheating while still minimizing electromagnetic interference that could negatively affect sensitive applications. PRO: Minimal electromagnetic interferenceĭue to low power used as well as the application of sophisticated electronic switching, the electromagnetic interference of DC fans is minimal.
This is ideal for commercial settings, like restaurants, allowing you to keep fans running all day without incurring astronomical electric bills. This means, that a 25-watt DC-driven yields the same results as 100-watt AC fan. In fact, DC fans consume up to 70 percent less energy to produce the same output as traditional AC fan types. They consume significantly less power than AC fans.
PRO: Consumes less powerĭC fans are widely regarded as the most efficient type of fans. DC technology is much newer than AC technology, which means there are fewer options available. DC fans have motors that rely on permanent magnets in order to attract and repel a rotor around the axis using electronic switching. The Pros and Cons of DC fansĭC technology has become much more sophisticated in recent years, and it can now be applied to both residential and industrial ceiling fans. We will try to point out differences between the above fan types, to help you choose and purchase the correct fan type for your application. Today however, their price difference is negligible due to their payback advantage.
In the past, big AC fans were typically less expensive compared to big DC fans. Worldwide, the usual value of this sinusoidal voltage may vary in size and in frequency, such as 100VAC, 120VAC, 200VAC, 220VAC, 230VAC or 240VAC, and with frequency (cycles per second) of 50Hz or 60Hz. In general, this changing voltage has sinusoidal shape. In contrast, the alternating current fans, or AC fans, are powered with a changing voltage of positive and of equal negative value. Typical voltage values for DC fans are, 5V, 12V, 24V and 48V. The direct current fans, or DC fans, are powered with a potential of fixed value such as the voltage of a battery.
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