291: Difference between revisions
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==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 adapter | ||
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 | ||
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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> | ||
Revision as of 08:47, 4 November 2023
The Tektronix 291 Diode Switching Time Tester Power Supply was 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 The TF-1 was later superseded by an adapter 017-0075-00 to be used with the diode test jig 013-0075-00.
Pictures
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291 with TF-1 adapter
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TF-1 adapter
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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
