Artifact Details

Title

GAP/R vacuum tube Operational Amplifier (Op-Amp)

Catalog Number

X1585.99

Type

Physical object

Date

ca 1955

Manufacturer

George A. Philbrick Researches, Inc.

Place Manufactured

U.S.

Identifying Numbers

Model number GAP/R Model K2-XA
Other number 12AX7A, 7025 Vacuum tube model #s for the right socket, printed on model # label
Other number 6BR8A, 6CL8A Vacuum tube model #s for the left socket, printed on model # label
Serial number 42675

Dimensions

overall: 1 5/8 in x 2 1/8 in x 4 1/2 in

Description

Two vacuum tubes occupying an 8-pin octal plug-in module. This packaging constitutes an operational amplifier (op-amp) with standard differential inputs and single-ended output. The Philbrick K2 series were the first ever op-amps to enjoy wide success. They were widely used in analog computers and in industrial control systems. [Text by Donor.]

Category

Component: circuit board / module

Credit

Gift of Eric Barbour

Lot Number

X1585.99