Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Photo Relay

IP.com Disclosure Number: IPCOM000098828D
Original Publication Date: 1958-Jun-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 62K

Publishing Venue

IBM

Related People

Litz, FA: AUTHOR [+2]

Abstract

The illustration shows a relatively small compact pluggable wit type photo relay. The relay comprises a glass thimble member, sections of which are coated with photoconductive material, a neon bulb which is positioned inside the thimble, and a conventional vacuum tube base on which the bulb and thimble are mounted. A pair of load conductors extends from each section of the thimble to appropriate pins on the tube base. The entire assembly is encapsulated in plastic and provided with a light shield.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Photo Relay

The illustration shows a relatively small compact pluggable wit type photo relay. The relay comprises a glass thimble member, sections of which are coated with photoconductive material, a neon bulb which is positioned inside the thimble, and a conventional vacuum tube base on which the bulb and thimble are mounted. A pair of load conductors extends from each section of the thimble to appropriate pins on the tube base. The entire assembly is encapsulated in plastic and provided with a light shield.

Energizing of the neon tube reduces the resistance of the photo conductive material thereby completing a circuit between pairs of load conductors associated with each section. The relay may be used to control thyratron and hard tube grid circuits.

The photoconductive material may also be deposited on the envelope of the neon tube if desired.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]