Brushless motor

Details Brushless motor Brushless motor

1998-03-17

1999-10-19

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68C, 310 68R, 360 9703, 360 9807, 360 9908, H02K 1100, H02K 1104

Patent

active

059694459

ABSTRACT:
A brushless motor which includes an arrangement to prevent dielectric breakdown of electronic parts mounted on a control board. The breakdown is caused by a heat sink which becomes electrostatically charged. The potential at the heat sink, which contacts switching devices (for instance, FETS) of the brushless motor, is equalized with the potential at one side of a source line for a drive circuit formed on the control board that includes the switching device. As a result, when the heat sink becomes electrostatically charged, the charge at the heat sink can be discharged to the source line, thereby eliminating the above problem.

REFERENCES:
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patent: 4643653 (1987-02-01), Masaka et al.
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patent: 5175613 (1992-12-01), Barker, III et al.
patent: 5424887 (1995-06-01), Schuh
patent: 5589711 (1996-12-01), Sano et al.
patent: 5659297 (1997-08-01), Tatavoosian
patent: 5783881 (1998-07-01), Best et al.
patent: 5818133 (1998-10-01), Kershaw et al.

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