Mini-fan unit especially for use as a fun printed circuit boards

Details Mini-fan unit especially for use as a fun printed circuit boards Mini-fan unit especially for use as a fun printed circuit boards

1998-10-09

2000-01-11

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, H02K 112

Patent

active

060139668

ABSTRACT:
A mini-fan unit for cooling a printed circuit board has a collectorless dc motor and a fan wheel driven by the dc motor. The dc motor is a single phase, single core claw pole motor having a back iron free permanent magnet rotor. At least one positioning magnet defines the starting position of the dc motor.

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patent: 5591017 (1997-01-01), Dwyer
patent: 5782652 (1998-07-01), Feher et al.

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