Browse Prior Art Database

Thermocouple Memory Unit

IP.com Disclosure Number: IPCOM000095265D
Original Publication Date: 1965-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Rashleigh, C: AUTHOR

Abstract

This memory unit uses the thermocouple principle and provides a junction which can be completed or opened to give, respectively, a logical 1 or 0. A conventional cold junction 11 is provided by permanently joining an end of constant wire 13 and an end of copper wire 15 in a relatively-low constant-temperature container 17 containing ice water 18.

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

Thermocouple Memory Unit

This memory unit uses the thermocouple principle and provides a junction which can be completed or opened to give, respectively, a logical 1 or 0. A conventional cold junction 11 is provided by permanently joining an end of constant wire 13 and an end of copper wire 15 in a relatively-low constant- temperature container 17 containing ice water 18.

Wire 13 extends into another container 19 holding copper sulphate solution
21. The end of wire 13 is separated from the end of another copper wire 23 by insulator 25. Below the latter, which actually is very thin, plated-on copper bridge 27 joins wires 13 and 23 to give a relatively high-temperature junction (room temperature). Below the junction, copper anode 29 is provided for electroplating to give the connecting metal bridge.

With the two junctions at different temperatures, a voltage is produced at the output terminals 31 and 33. Thus, with the plated junction, a logical 1 is read. Deplating with reverse polarity gives an open circuit and the no output voltage reflects a logical 0 reading.

1

Page 2 of 2

2

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