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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 | ||
|model=290 | |||
|class=Test fixture | |||
|series= | |||
|summary=Transistor Switching Time Tester | |||
|image=Tek 290 front.jpg | |||
|caption=Tek 290 front | |||
|introduced=1962 | |||
|discontinued=(?) | |||
|designers= | |||
|manuals= | |||
* [http://w140.com/tek_290.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. | It handles NPN and PNP transistors. | ||
The 290 has two modes, low-voltage (collector voltage 0 to 30 V) and high-voltage | The 290 has two modes, low-voltage (collector voltage 0 to 30 V) and high-voltage (collector voltage from 0 to 100 V). | ||
(collector voltage from 0 to 100 V). The fixture's input and output are 50 Ω | 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. | ||
GR-874 connectors, so it can be used with standard cables and test | The instrument itself is rated to have a risetime of under 1 ns. | ||
instruments while maintaining good signal integrity. The instrument itself is rated | |||
to have a risetime of under 1 ns. | |||
==Pictures== | |||
<gallery> | <gallery> | ||
Tek 290 front.jpg | Tek 290 front.jpg | ||