Patent ID: 8172553

Claim:
A small sized heat dissipating fan comprising: a housing including a hollow interior, an air inlet, an air outlet and a carrying base arranged in the housing, with the air inlet and the air outlet being formed on any two side walls of the housing and in communication with the hollow interior; a stator securely mounted in the hollow interior and on the carrying base and including a magnetizing member having a plurality of coils and a circuit board electrically connecting to the coils and having a driving circuit and a speed adjuster, wherein the speed adjuster is a chip resistor having a resistance of 0 ohm, with the driving circuit, the speed adjuster and the coils electrically connecting to each other, with the circuit board, the driving circuit, and the speed adjuster located in the hollow interior; and a rotor including a shaft, an impeller fixed to one end of the shaft, and an annular magnet, wherein the other end of the shaft extends through the magnetizing member while the shaft rotatably couples to the stator, with the annular magnet being mounted to an inner periphery of the impeller and facing the magnetizing member of the stator.