Electroluminescent identification device

Details Electroluminescent identification device Electroluminescent identification device

1996-04-16

1998-01-20

Silbermann, Joanne

Card, picture, or sign exhibiting

Illuminated sign

Luminescent

362812, G09F 1322

Patent

active

057090459

ABSTRACT:
An electroluminescent identification device includes an enclosure which supports a variety of opaque alpha-numeric characters, a luminescent lamp which highlights the characters, and an electronic circuit which converts the alternating voltage typically used in doorbell electrical circuits to the higher alternating frequencies required to energize the lamp.

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Introduction to Electrical Engineering; Paul, Nasar and Unnewehr; 1986; p. 598.

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