Improvements in and relating to a Neutral Relay for use in Duplex and Quadruplex Telegraphy. being Patent Number: GB000190603630A published: 14.02.1906

FIELD STEPHEN DUDLEY, US

Published by HMSO c, 1906

About this Item

First Edition. Stephen D. Field was a notable figure in electrical engineering, especially in telegraphy. His work on neutral relays was pivotal in enabling: Duplex Telegraphy: Sending messages in both directions simultaneously over a single wire. Quadruplex Telegraphy: Transmitting four messages two in each direction using one wire, by combining polar and differential signaling. The neutral relay in this context refers to a type of electromagnetic relay that responds to current flow without regard to polarity. This was crucial for distinguishing signals in complex multiplex systems. Original Printed patent disbound About 27cm by 18cm some wear and tear due to the disbinding.

Seller Inventory # 52730

Bibliographic Details

• Title: Improvements in and relating to a Neutral Relay for use in Duplex and Quadruplex Telegraphy. being Patent Number: GB000190603630A published: 14.02.1906
• Publisher: HMSO c
• Publication Date: 1906
• Binding: Hardcover
• Edition: 1st Edition
• Condition: Good