Archive for the ‘Speed Controller Circuits’ Category

Fan speed controller using LM2941

Description. Many electronic circuits related to fan speed controlling have been published here and this one is just another approach. The circuit diagram shown here is of 12V DC fan speed controller using the IC LM2941CT which is a low drop out 1A voltage regulator. The IC has a dropout voltage as low as 0.5 and has also many useful features like power supply reverse protection, thermal protection, short circuit protection etc. The maximum output current the IC can source is 1A. The 12V DC supply is connected between the Vin (pin4) and ground (pin3) of the IC. The load,…

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