Browse Prior Art Database

Reed Relay Multiplex Array

IP.com Disclosure Number: IPCOM000092973D
Original Publication Date: 1967-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Lind, JW: AUTHOR

Abstract

This reed relay switching array can be employed to multiplex pulses having rise and fall transitions of less than two nanoseconds.

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Reed Relay Multiplex Array

This reed relay switching array can be employed to multiplex pulses having rise and fall transitions of less than two nanoseconds.

A plurality of reed switches 20, 22, 24, 26, 28, and 30 is connected to a single input terminal 32 and provides a plurality of output terminals 34, 36, 38, and 40. Each relay includes a capsule 20', 22', 24', 26', 28', and 30' and a surrounding coil 20", 22", 24", 26", 28", and 30". A space 42 exists between each coil and capsule. This space is filled with a nonmagnetic, low-temperature metal which provides the reed switch with a transmission line characteristic impedance instead of an open line discontinuity. Interconnections 44 between the reed switches can be wire conductors. The latter can be coated with low-temperature metal to produce a transmission line characteristic impedance equal to the impedance of the reed capsule. Alternatively, the interconnections can also be co-ax lines of the appropriate impedance.

Signals appear at the output terminals 34, 36, 38, and 40 in accordance with the input signals, not shown, supplied to the coils of each reed switch.

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