1987.0487.397 Texas Instruments Collection Object

Vacuum Tube Replacement
TI number: G00056

These devices were designed as a semiconductor replacement for 6AK5 vacuum tubes in the 1972-3 time period. The customer was Western Electric.

The VTR's were designed and produced for Western Electric for use in their telephone transmission equipment. The need was due to their desire to decrease power requirements, increase reliability and solve the potential supply problem caused by the decreasing vacuum tube manufacturing volume. The devices consisted of semiconductor chips mounted on a thin-film circuit ceramic substrate. There were two circuit variations, an amplifier and an oscillator. Photographs are on file.

Related material in collection: G00057, 154, 155, PG00030, 31.
Texas Instruments (Win Day, John Gibson, Don Hyde.)

Contact Nance L. Briscoe for further information

National Museum of American History

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