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HISTORIC TRANSISTOR HOBBYIST SUPPLIES!
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Authentic
Supplies for the Transistor Historian and Kit Builder.
Available
Only from the TransistorMuseum™
All
Transistors Tested
Before
Shipment.
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Historical Background
Raytheon was the leading supplier
of the first transistors to hearing aid manufacturers, starting in
1952. These first Raytheon transistors were black
epoxy cased units, labeled as CK718.
Transistor technology was developing rapidly and the next generation
of smaller metal cased units appeared in 1955. Still further size reduction and improved performance
resulted in the 1957 vintage units labeled as CK782, 3, 4 or 5. Surplus CK78X transistors were
encapsulated inside larger blue or silver metal cases and marketed as the popular
CK722 hobbyist transistor. Use these
transistors as “mini-CK722s” – the performance is identical!
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Your CK78X Transistor Order
Will be Supplied in the Storage/Display Envelope Shown Above, which Includes
an Insert with Historical Description and a Schematic.
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RAYTHEON
CK78X TRANSISTORS
PNP Germanium Alloy
Hearing Aid Transistor
Vintage
1957
Use:
Hobbyist/CK722
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Your TransistorMuseum™ CK78X Order Will Contain:
Two
Tested CK78X PNP
Germanium Hobbyist Transistors
(See
the Style Shown Above)
Hobbyist
Insert Depicting the Historical Importance of this Classic Transistor,
Includes a Schematic and Project Description of an Early Transistor Project
Using the CK78X
A
TransistorMuseum™ Classic
Semiconductor
Storage
and Display Envelope
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ORDER NOW
$10 per Package (Two CK78Xs)
Includes
Shipping Within U.S.
Email
me at
transistormuseum@aol.com
To
Determine Payments Options
(Paypal
or Check)
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COPYRIGHT © 2002
By Jack Ward
All Rights
Reserved.
http://www.transistormuseum.com
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