D: Difference between revisions

14 bytes added ,  10 December 2015
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title=Tektronix D|
title=Tektronix D|
summary=Differential amplifier|
summary=Differential amplifier|
image=D.jpeg |  
image=Tek type d front.jpg |  
caption=D front view|
caption=D front view|
introduced=1954 |
introduced=1954 |
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==Internals==
==Internals==
Some production used a pair of [[5814]] tubes at the input while others used [[12AU7]]'s.
Some production runs used a pair of [[5814]] tubes at the input while others used [[12AU7]]'s.
These two tube types have different heater currents, and because the heaters are
These two tube types have different heater currents, and because the heaters are
series-wired, you cannot switch from one type to the other without circuit modification.
series-wired, you cannot switch from one type to the other without circuit modification.
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<gallery>
<gallery>


Image:D.jpeg
File:D.jpeg
Image:D 1.JPG|Front
File:D 1.JPG|Front
Image:D 1.JPG.JPG| Chassis
File:D 1.JPG.JPG| Chassis
Image:D 3.JPG| Rubber support for elimination of microphonics
File:D 3.JPG| Rubber support for elimination of microphonics
Image:D 4.JPG| Chassis bottom
File:D 4.JPG| Chassis bottom
File:Tek d early schem.png|Early Schematic
File:Tek d early schem.png|Early Schematic
File:Tek d late schem.png|Late Schematic
File:Tek d late schem.png|Late Schematic