Milwaukee Electric Tool Corporation

Chien-Chih Chao

Jeffrey M Brozek

Benjamin C Tesch

Kyle J Radovich

Wyatt R Silha

Vasil Zhmendak

Omid Shirazi

Nathan J Gustafson

David J Gaulke

A resettable electronic fuse for a high-power device such as a power tool, a battery pack for the power tool, or a battery pack charger. The resettable electronic fuse is connected in a current path of the device and is operable or configured to selectively interrupt current through the resettable electronic fuse based on a detected condition of the device (e.g., a detected fault condition of the device). The resettable electronic fuse is also configured to be reset after a detected fault condition has ended. In some embodiments, the resettable electronic fuse is configured to reset itself. In other embodiments, the resettable electronic fuse is configured to receive a signal (e.g., from a device controller) to reset.

Resettable electronic fuse for high-power devices

A battery pack charging system includes a battery pack interface configured to receive a battery pack, a charging circuit coupled to the battery pack interface to provide charging current to the battery pack interface, and a controller coupled to the charging circuit and configured to control supply of charge current to the battery interface. The battery pack charging system further includes a power supply circuit coupled to the charging circuit, a filter circuit coupled to the power supply circuit and including a nanocrystalline ferrite common mode choke, and an alternating current plug configured to connect the filter circuit to an alternating current power source.

Charger with nanocrystalline ferrite choke

Growing community of inventors

Menomonee Falls, WI, United States of America

Chien-Chih Chao