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310: Difference between revisions
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The original 310 pioneered the use of circuit board construction, rather than the trusted ceramic strip point to point wiring. The circuit boards were two sided, however plated through hole technology to interconnect the layers had not been invented yet. Rather, all of the holes for component mounting and interconnect contained a rivet | The original 310 pioneered the use of circuit board construction, rather than the trusted ceramic strip point to point wiring. The circuit boards were two sided, however plated through hole technology to interconnect the layers had not been invented yet. Rather, all of the holes for component mounting and interconnect contained a rivet | ||
which was expanded in a press before the components were installed in the board. The rivets themselves were not soldered to the copper foil traces, and relied on the pressure from the crimp to make contact. This proved to be extremely unreliable, with many intermittent connections resulting in high warranty and after warranty failure. | which was expanded in a press before the components were installed in the board. The rivets themselves were not soldered to the copper foil traces, and relied on the pressure from the crimp to make contact. This proved to be extremely unreliable, with many intermittent connections resulting in high warranty- and after-warranty failure. | ||
The 310A model essentially used the identical circuit design, but returned to the trusted ceramic strip construction method. | The 310A model essentially used the identical circuit design, but returned to the trusted ceramic strip construction method. | ||
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Image:310 5.jpg|310 right rear | Image:310 5.jpg|310 right rear | ||
File:Tek 310 base.jpg|fan base in '57 catalog | File:Tek 310 base.jpg|fan base in '57 catalog | ||
File:Tek 310a left internal.jpg|310A Left Internal | |||
File:Tek 310a rightt internal.jpg|310A Right Internal | |||
</gallery> | </gallery> | ||
[[Category:Monolithic tube scopes]] | [[Category:Monolithic tube scopes]] | ||
[[Category:Introduced in 1955]] | [[Category:Introduced in 1955]] | ||