FAN SPEED TESTING DEVICE

摘要

A fan speed testing device is provided. The device includes a power jack, a voltage conversion module, a first fan connector, a DIP switch, and a control module. The first fan connector receives voltage from the power jack and outputs a PWM signal to a fan, receives a first feedback signal from the fan, and outputs the first feedback signal to the control module. The control module receives the predetermined voltage, sets the rotation speed of the fan as marked or predicted by the manufacturer, and outputs the generated PWM signal to the first fan connector. The control module further analyzes the first feedback signal to determine an actual rotation speed of the fan, and outputs the predicted rotation speed of the fan and the first actual rotation speed of the fan, by visual or audible signal to the user for comparison purposes.

主权项

1. A fan speed testing device comprising:
a power jack configured to receive voltage from a power source; a voltage conversion module electrically connected to the power jack and configured to convert the voltage received by the power jack to a predetermined voltage; a first fan connector electrically connected to a fan, the first fan connector being configured to receive the voltage from the power jack and output a PWM signal to the fan, receive a first feedback signal from the fan, and output the first feedback signal; a dual in-line package switch (DIP switch) capable of offering a plurality of combinations and capable of being set by a user operation; and a control module electrically connected to the voltage conversion, the DIP switch, and the first fan connector, the control module being configured to receive the predetermined voltage from the voltage conversion module, set a predicted rotation speed of the fan in response to a user operation of setting the combination of the DIP switch, generate the PWM signal corresponding to the predicted rotation speed of the fan, and output the generated PWM signal to the first fan connector; the control module being further configured to receive the first feedback signal from the first fan connector, analyze the first feedback signal to determine an actual rotation speed of the fan, and output the predicted rotation speed of the fan and the first actual rotation speed of the fan by visual or audible signal.