291: Difference between revisions

From TekWiki
Jump to navigation Jump to search
No edit summary
No edit summary
 
(7 intermediate revisions by 3 users not shown)
Line 4: Line 4:
|class=Test fixture
|class=Test fixture
|series=
|series=
|summary=Diode Switching Time Tester
|summary=diode switching time tester
|image=Tek 291 3.jpg
|image=Tek 291 3.jpg
|caption=Tek 291 front
|caption=Tektronix 291
|introduced=1962
|introduced=1962
|discontinued=(?)
|discontinued=(?)
|designers=
|designers=
|manuals=
|manuals=
* [http://w140.com/tek_291.pdf Tektronix 291 Manual (PDF)]
* [[Media:070-361.pdf|Tektronix 291 Manual]] (OCR)
* [http://bama.edebris.com/download/tek/291/Tek%20291.pdf Tektronix 291 Manual (BAMA, PDF, offline?)]
}}
}}
The '''Tektronix 291 Diode Switching Time Tester Power Supply''' was [[introduced in 1963]]. The 291 uses the [[TF-1|TF-1 test fixture]].  
The '''Tektronix 291''' is a Diode Switching Time Tester Power Supply [[introduced in 1963]].
The 291 uses the [[TF-1|TF-1 test fixture]].  


TF-1 fixtures have been known to have issues with bad connections with the diode.
TF-1 fixtures have been known to have issues with bad connections with the diode.
In at least one case, a TF-1 has been made to work reliably by replacing the weak AlNiCo magnet that holds the axial leaded (magnetic) diode in place, by replacing it with a much stronger FeNdB magnet the same size (easily available on Ebay).
In at least one case, a TF-1 has been made to work reliably by replacing the weak AlNiCo magnet that holds the axial leaded (magnetic) diode in place, by replacing it with a much stronger FeNdB magnet the same size (easily available on Ebay).
The TF-1 was later superseded by an adapter [[017-0075-00]] to be used with the diode test jig 013-0080-00 (see [[017-0075-00]] for a picture).


==Pictures==
==Pictures==
<gallery>
<gallery>
Tek 291 system.jpg
Tek 291 system.jpg     | 291 with TF-1 Adapter
Tektronix 291 tf1.jpg
Tektronix 291 tf1.jpg | TF-1 Front
Tek 291 tf1 rear.jpg
Tek 291 tf1 rear.jpg   | TF-1 Rear
Tek 291 tf1 inside.jpg
Tek 291 tf1 inside.jpg | TF-1 Inside
Tek_291_3.jpg
Tek_291_3.jpg         | 291 Front
Tek 291 top.jpg
Tek 291 top.jpg
Tek 291 bottom.jpg
Tek 291 bottom.jpg
Line 31: Line 32:
Tek 291 powersupply.jpg
Tek 291 powersupply.jpg
Tek 291 airline.jpg
Tek 291 airline.jpg
Tek 291 schem.png
Tek 291 schem.png | 291 Schematic
Tek 291 altfix 1.jpg
Tek 291 altfix 1.jpg | Adapter 017-0075-00 and Test Jig 013-0080-00
Tek 291 altfix 2.jpg
Tek 291 altfix 2.jpg | Adapter 017-0075-00 and Test Jig 013-0080-00
Tek 291 altfix 3.jpg
Tek 291 altfix 3.jpg | Adapter 017-0075-00 and Test Jig 013-0080-00
</gallery>
</gallery>



Latest revision as of 18:31, 7 December 2023

Tektronix 291
diode switching time tester
Tektronix 291

Produced from 1962 to (?)

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 291 is a Diode Switching Time Tester Power Supply introduced in 1963. The 291 uses the TF-1 test fixture.

TF-1 fixtures have been known to have issues with bad connections with the diode. In at least one case, a TF-1 has been made to work reliably by replacing the weak AlNiCo magnet that holds the axial leaded (magnetic) diode in place, by replacing it with a much stronger FeNdB magnet the same size (easily available on Ebay). The TF-1 was later superseded by an adapter 017-0075-00 to be used with the diode test jig 013-0080-00 (see 017-0075-00 for a picture).

Pictures