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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 | [[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. It has two modes: low-voltage and high-voltage. | ||
In the low-voltage mode, Vcc can be adjusted from 0V to 30V. In the high-voltage | In the low-voltage mode, Vcc can be adjusted from 0V to 30V. In the high-voltage | ||