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UNIVERSAL BATTERY CHARGER MODULE

IP.com Disclosure Number: IPCOM000006153D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2001-Dec-07
Document File: 1 page(s) / 49K

Publishing Venue

Motorola

Related People

Rodney Whaley: AUTHOR [+3]

Abstract

Rechargeable batteries are an important part of today's electronic market. The rapid changes in the electronic market require constant changes in both function and form of the electronic equipment and their battery chargers. These constant changes in form create problems in manufacturing. Because of this, it is necessary to develop a common battery charger that is easily manufactured in an economical fashion.

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MOTOROLA INC. Technical Developments Volume 12 April 1991

UNIVERSAL BATTERY CHARGER MODULE

by Rodney Whaley, Eric Eaton and Mostafa Hedayatnia

  Rechargeable batteries are an important part of today's electronic market. The rapid changes in the electronic market require constant changes in both function and form of the electronic equipment and their battery chargers. These constant changes in form create problems in manufacturing. Because of this, it is necessary to develop a common battery charger that is easily manufactured in an economical fashion.

  A universal charger base that accepts modular charging inserts for customized individual applications is described below. Such a universal base makes it unnecessary to redesign the entire battery charger every time the form factor of the product changes. In addition, inventory is reduced for both the manu- facturer and vendors of the battery charger since it is

not necessary to stock large quantities of individual chargers for each pager model. One base only need be produced with only the modular inserts being different for each pager model.

  A variety of charging voltages and current rates are required to meet the battery charging needs of present and future products. The universal base unit is designed to supply an output voltage greater than required by any single pager battery. The output voltage is automatically adjusted to the individual pager requirement by means of a simple resistive voltage divider and/or...