HISTORIC TRANSISTOR HOBBYIST SUPPLIES!
Authentic Supplies for the Transistor Historian and Kit
Available Only from the TransistorMuseum™
All Transistors Tested
In 1956, the Navy began funding
a large scale project to develop a ballistic missile that could be launched
from a submerged submarine. The inertial guidance computer carried onboard
each Polaris missile was developed at the MIT Instrumentation Laboratory. The first version of the Polaris missile
computer used discrete transistor components, while later versions used
integrated circuits as this technology became available. Hundreds of Polaris missiles were
produced until 1972, when the Poseidon missile was deployed as a
replacement. Texas Instruments
was a major supplier of semiconductors for the Polaris programs, beginning
with germanium transistors in the 1950s – your R212 transistors were
manufactured by TI for the Polaris program in the 1960s/70s. These are very high quality alloy
junction germanium PNP transistors, each meeting the rigorous test
standards of the Polaris missile program.
You can use your gold plated R212 transistors in a wide variety of
germanium circuit applications with excellent results.
Your R212 Transistor Order
Will be Supplied in the Storage/Display Envelope Shown Above, which Includes
an Insert with Historical Description and a Schematic.
Alloy Junction Transistors
Vintage 1960s –1970s
Use: Polaris Missile
Your TransistorMuseum™ R212
Order Will Contain:
(Style Shown Above)
Insert Depicting the Historical Importance of this Unique Transistor,
Includes a Schematic Using the R212 in a Digital Timer Circuit
and Display Envelope
$10 per Package (Two Transistors)
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COPYRIGHT © 2004
By Jack Ward