Can the DC fan speed be adjusted?

Customers often ask whether DC fans can be adjusted in speed? Is there anything on the fan that can be adjusted at will? The speed adjustment function is one of the main differences between DC fans and AC fans, but it depends on how to adjust. The method used to adjust is mainly related to the matching of the client. The DC fan itself is a fixed motor and will not change. However, the speed of the DC fan can change as the external conditions change. u003cbru003e u003cbru003e u003cbru003e 　　 If the speed is adjusted according to the high and low frequency, the CPU fan is commonly used. If you change the input voltage of a DC fan, the most common one is a handheld DC fan u003cbru003e u003cbru003e u003cbru003e 　　 DC fans can be customized with different high and low speeds according to customer requirements. Some people say that AC fans can also be used, but AC fans only adjust the speed within a small float, while DC fans have a very large float. 10%, up to 100%. The cost of high and low speeds may also vary several times.