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The Tektronix 291 Diode Switching Time Tester Power Supply | {{Instrument Sidebar | ||
|manufacturer=Tektronix | |||
|model=291 | |||
|class=Test fixture | |||
|series= | |||
|summary=diode switching time tester | |||
|image=Tek 291 3.jpg | |||
|caption=Tektronix 291 | |||
|introduced=1962 | |||
|discontinued=(?) | |||
|designers= | |||
|manuals= | |||
* [[Media:070-361.pdf|Tektronix 291 Manual]] (OCR) | |||
}} | |||
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. | |||
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The TF-1 was later superseded by an adapter [[017-0075-00]] to be used with the diode test jig 013-0080-00 (see [[017-0075-00]] for a picture).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== | |||
<gallery> | <gallery> | ||
Tek 291 system.jpg | 291 with TF-1 Adapter | |||
Tektronix 291 tf1.jpg | TF-1 Front | |||
Tek 291 tf1 rear.jpg | TF-1 Rear | |||
Tek 291 tf1 inside.jpg | TF-1 Inside | |||
Tek_291_3.jpg | 291 Front | |||
Tek 291 top.jpg | |||
Tek 291 bottom.jpg | |||
Tek 291 inside.jpg | |||
Tek 291 powersupply.jpg | |||
Tek 291 airline.jpg | |||
Tek 291 schem.png | 291 Schematic | |||
Tek 291 altfix 1.jpg | Adapter 017-0075-00 and Test Jig 013-0080-00 | |||
Tek 291 altfix 2.jpg | Adapter 017-0075-00 and Test Jig 013-0080-00 | |||
Tek 291 altfix 3.jpg | Adapter 017-0075-00 and Test Jig 013-0080-00 | |||
</gallery> | </gallery> | ||
[[Category:Introduced in 1963]] | |||
[[Category:Accessory power supplies]] | |||
[[Category:Diode testers]] | |||
Latest revision as of 17:31, 7 December 2023
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 The TF-1 was later superseded by an adapter 017-0075-00 to be used with the diode test jig 013-0080-00 (see 017-0075-00 for a picture).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
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291 with TF-1 Adapter
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TF-1 Front
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TF-1 Rear
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TF-1 Inside
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291 Front
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291 Schematic
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Adapter 017-0075-00 and Test Jig 013-0080-00
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Adapter 017-0075-00 and Test Jig 013-0080-00
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Adapter 017-0075-00 and Test Jig 013-0080-00
