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Nuvistor: Difference between revisions
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[[ | [[File:Nuvistor.jpg|thumb|right|250px|Nuvistor]][[File:Nuvistor bottom.jpg | thumb|right|250px]] | ||
Nuvistors are | '''Nuvistors''' are miniature, rugged, metal-ceramic enclosed vacuum tubes. | ||
There are used in many Tektronix products of the 1960's. | There are used in many Tektronix products of the 1960's. | ||
Nuvistors used in Tek gear include: | Nuvistors used in Tek gear include: | ||
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* [[6CW4]] | * [[6CW4]] | ||
As high-impedance buffers (cathode follower), | As high-impedance buffers (cathode follower), Nuvistors were replaced by JFETs. | ||
Nuvistors were replaced by JFETs. | |||
As voltage amplifiers, they were mostly replaced by BJTs. | As voltage amplifiers, they were mostly replaced by BJTs. | ||
Some products such as the [[1A1]] and [[453]] started production | Some products such as the [[1A1]] and [[453]] started production | ||
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Nuvistors, like all tubes, eventually need to be replaced. | Nuvistors, like all tubes, eventually need to be replaced. | ||
They are no longer manufactured but they are still | They are no longer manufactured but they are still available online from old stock. | ||
Another repair option is to convert the circuit to use a transistor. | Another repair option is to convert the circuit to use a transistor. | ||
In at least one case (the [[422]]), JFETs can be plugged directly | In at least one case (the [[422]]), JFETs can be plugged directly | ||
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[[Category:Vacuum tubes]] | [[Category:Vacuum tubes]] | ||
[[Category:Repair issues]] | |||