NON-CONTACT CHARGER SYSTEM
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2001-Nov-14
Publishing Venue
Motorola
Related People
Frederick L. Kampe: AUTHOR [+3]
Abstract
In rechargeable devices the charging contacts can become corroded from exposure to air or salt water leading to poor contact and eventual failure of the device. For this reason the contacts are frequently gold plated, however the gold is soft and often wears off.
0 M MmROLA
Technical Developments Volume 10 March 1990
NON-CONTACT CHARGER SYSTEM
by Frederick L. Kampe, William J. Burke and Robert Wm. Wandelt
Abstract
In rechargeable devices the charging contacts can become corroded from exposure to air or salt water leading to poor contact and eventual failure of the device. For this reason the contacts are frequently gold plated, however the gold is soft and often wears off.
These problems are avoided by the use of a charging system that does not make direct electrical contact with the device being charged. Instead, the charger-base and rechargeable device are inductively coupled and the rechargeable device includes extra components to capture the AC field and convert it to DC for charging the battery(s).
This idea has application in any product with rechargeable batteries and specifically in the areas of Cordless or Cellular Phones, Two-way radios, Pagers and other portable devices.
BAnEFlY
BASE UNIT
PORTABLE UNIT
AIR GAP
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0 Motorola, Inc. 1990 73