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   Relays, Mercury-Wetted Contact

A mercury wetted relay is a form of reed relay in which the contacts are wetted with mercury. Such relays are used to switch low-voltage signals (one volt or less) because of its low contact resistance, or for high-speed counting and timing applications where the mercury eliminated contact bounce. Mercury wetted relays are position-sensitive and must be mounted vertically to work properly. Because of the toxicity and expense of liquid mercury, these relays are rarely specified for new equipment.



Bronze Partners
Aleph International Corp.
American Electronic Components
American Relays, Inc.
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Clare Inc.
Comus Intl.
Coto Technology
Cougar Electronics Corp.
EAC Electronics Co.
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Hasco Components International Company
Magnecraft
Master Electronic Controls (MEC)
Matrix Systems Corp.
MDI
MEDER electronic Inc.
Midtex Products
Opto 22
Spectron Glass & Electronics Inc.
SRC Devices
Sumida America
Triridge Corp.
Universal Relays
Fixed and programmable amplifiers - Frequency Devices

 

Books
Handbook for Sound Engineers, Third Edition
Glen Ballou

Excerpt - page 309: "... two windings on a permanent magnet core. A differential polar relay is a combination of a ... covers dry reed relays and mercury-wetted contact relays, all of which use hermetically sealed reed switches. In ..."
See more references to Relays, Mercury-Wetted Contact in this book.
Handbook for Sound Engineers: The New Audio Cyclopedia
Glen M. Ballou

Excerpt - page 381: "... combination of a differential and a polarized relay. 14.2.2 Reed Relays" 2 Reed relays were developed ... covers dry reed relays and mercury- wetted contact relays, all of which use hermetically sealed reed switches. In ..."
See more references to Relays, Mercury-Wetted Contact in this book.
Van Nostrand's Scientific Encyclopedia 2 Volume Set
Glenn D. Considine

Excerpt - page 155: "... flying-capacitor, and transformer-coupled designs. Switching devices normally are dry- reed relays, field-effect transistors, or mercury-wetted contact relays. Field-effect transistor switches can be applied for very high ..."
See more references to Relays, Mercury-Wetted Contact in this book.
Enzyme Structure, Part D, Volume 27: Volume 27: Enzyme Structure Part D (Methods in Enzymology)
Nathan P. Kaplan and Nathan P. Colowick

Excerpt - page 814: "... disc. The collector loads of the phototransistors are high speed mercury-wetted contact relays (C. P. Clare HGS 5003) which have operate and drop-out ..."
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Electronics for Electricians and Engineers
Ian Robertson Sinclair

Excerpt - page 72: "... currents ranging from 250 mA to 2 A, depending on contact size. The reeds in their ... as a single package. Reed relays are particularly useful if fast ... no bouncing of contacts, a mercury-wetted reed relay can be used. ,_.~.._. .~ ~ _ _.- ..."
See more references to Relays, Mercury-Wetted Contact in this book.
Analog Signal Processing
Ramón Pallás-Areny and John G. Webster

Excerpt - page 383: "... coil. Some models include a permanent magnet so that the contacts are normally closed and a control current pulls the reeds apart. In mercury- wetted-reed relays, the contact between reeds is made by a droplet of ..."
See more references to Relays, Mercury-Wetted Contact in this book.
Current Trends in Engineering Practice
C. V. Ramakrishnan

Excerpt - page 278: "... battery operated voltage pulse generators either with transistors, or a relay with mercury wetted contacts are frequently used. Performance tests on calibrator include, - determination ..."
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