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The Tektronix Type 290 Transistor Switching Time Tester is a test fixture
{{Instrument Sidebar
[[introduced in 1962]] with built-in power supplies for the collector current and the base bias.
|manufacturer=Tektronix
It handles NPN and PNP transistors.  It has two modes: low-voltage and high-voltage.
|model=290
In the low-voltage mode, Vcc can be adjusted from 0V to 30V. In the high-voltage
|class=Test fixture
mode, Vcc goes from 0V to 100V.  The fixture provides a 50-ohm input and a 50-ohm
|series=
output with GR-874 connectors, so it can be used with standard cables and test
|summary=Transistor Switching Time Tester
instruments while maintaining good signal integrity.  The instrument itself is rated
|image=Tek 290 front.jpg
to have a risetime of under 1 nanosecond.
|caption=Tek 290 front
|introduced=1962
|discontinued=(?)
|designers=
|manuals=
* [[Media:070-285.pdf|Tektronix 290 Manual]] (PDF)
}}
The '''Tektronix Type 290 Transistor Switching Time Tester''' is a test fixture [[introduced in 1962]] with built-in power supplies for the collector current and the base bias.
It handles NPN and PNP transistors.   
 
The 290 has two modes, low-voltage (collector voltage 0 to 30 V) and high-voltage (collector voltage from 0 to 100 V).  
The fixture's input and output are 50 Ω GR-874 connectors, so it can be used with standard cables and test instruments while maintaining good signal integrity.   
The instrument itself is rated to have a risetime of under 1 ns.  
 
==Pictures==
<gallery>
<gallery>
Image:Tek 290 front.jpg
Tek 290 front.jpg
Image:Tek 290 connectors.jpg
Tek 290 connectors.jpg
Image:Tek 290 inside.jpg
Tek 290 inside.jpg
Image:Tek 290.gif
Tek 290.gif
</gallery>
</gallery>
[[Category:Test adapters]]
[[Category:Introduced in 1962]]

Latest revision as of 09:24, 20 August 2021

Tektronix 290
Transistor Switching Time Tester
Tek 290 front

Produced from 1962 to (?)

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

The Tektronix Type 290 Transistor Switching Time Tester is a test fixture introduced in 1962 with built-in power supplies for the collector current and the base bias. It handles NPN and PNP transistors.

The 290 has two modes, low-voltage (collector voltage 0 to 30 V) and high-voltage (collector voltage from 0 to 100 V). The fixture's input and output are 50 Ω GR-874 connectors, so it can be used with standard cables and test instruments while maintaining good signal integrity. The instrument itself is rated to have a risetime of under 1 ns.

Pictures