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Motor rotation inverse

IP.com Disclosure Number: IPCOM000236827D
Publication Date: 2014-May-19
Document File: 1 page(s) / 35K

Publishing Venue

The IP.com Prior Art Database

Abstract

Utilize inverse circuit to stop the fan within 2 seconds. Fan guard is no longer required. This can satisfy Safety requirement and also improve thermal performance.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Motor rotation inverse

When removing the fan module, utilize a electrical circuit to invert the motor rotation to stop the fan blade from rotating within 2 seconds.

3 groups of circuits to stop the fan within 2 seconds are added.

1. Add fan latch circuit to trigger inverse rotation circuit
2. Add inverse rotation circuit to drive the current to run the opposite direction to stop the fan
3. Add a TECH circuit to prevent the fan from over-inverse

Attached is the overview of our circuits.

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