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The '''Tektronix Type 290 Transistor Switching Time Tester''' is a test fixture
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.
[[introduced in 1962]] with built-in power supplies for the collector current and the base bias.
It handles NPN and PNP transistors.  It has two modes: low-voltage and high-voltage.
It handles NPN and PNP transistors.   
In the low-voltage mode, Vcc can be adjusted from 0V to 30V.  In the high-voltage
 
mode, Vcc goes from 0V to 100V. The fixture provides a 50-ohm input and a 50-ohm
The 290 has two modes, low-voltage (collector voltage 0 to 30 V) and high-voltage
output with GR-874 connectors, so it can be used with standard cables and test
(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
instruments while maintaining good signal integrity.  The instrument itself is rated
to have a risetime of under 1 nanosecond.  
to have a risetime of under 1 ns.  


* [http://w140.com/tek_290.pdf Tektronix 290 Manual (PDF)]
* [http://w140.com/tek_290.pdf Tektronix 290 Manual (PDF)]
   
   
<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:Accessories]]
[[Category:Test adapters]]
[[Category:Introduced in 1962]]
[[Category:Introduced in 1962]]

Revision as of 13:17, 9 March 2018

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.