Gordon Lee Klema

US Patent:

47758260, Oct 4, 1988

Filed:

Apr 27, 1987

Appl. No.:

7/043001

Inventors:

Gordon L. Klema - Racine WI

Assignee:

Aviation Ignition Accessories - Milwaukee WI

International Classification:

H02J 700

US Classification:

320 2

Abstract:

A battery system for auxiliary aircraft power includes a 30 volt battery pack consisting of two twelve volt batteries and one six volt battery connected in series. A constant voltage device is connected in series with the battery pack to reduce the higher batter pack voltage to the nominal 28 volts required by the aircraft. In this way, commonly available industrial batteries can be used to supply the 28 volts peculiar to aircraft systems. The constant voltage device comprises two pairs of series connected silicon power diodes, each pair of series connected diodes exhibiting a forward voltage drop under load of approximately 1. 5 volts. The two pairs of diodes are connected in parallel to increase the current carrying capacity of the constant voltage device.