Episode 233
Avalanche transistor
Sat, 2017-Dec-23 00:31 UTC
Length - 1:46
Direct Link
Welcome to random Wiki of the Day where we read the summary of a random Wikipedia page every day.
The random article for Saturday, 23 December 2017 is Avalanche transistor.
An avalanche transistor is a bipolar junction transistor designed for operation in the region of its collector-current/collector-to-emitter voltage characteristics beyond the collector-to-emitter breakdown voltage, called avalanche breakdown region. This region is characterized by avalanche breakdown, which is a phenomenon similar to Townsend discharge for gases, and negative differential resistance. Operation in the avalanche breakdown region is called avalanche-mode operation: it gives avalanche transistors the ability to switch very high currents with less than a nanosecond rise and fall times (transition times). Transistors not specifically designed for the purpose can have reasonably consistent avalanche properties; for example 82% of samples of the 15V high-speed switch 2N2369, manufactured over a 12-year period, were capable of generating avalanche breakdown pulses with rise time of 350 ps or less, using a 90V power supply as Jim Williams writes.
This recording reflects the Wikipedia text as of 00:31 UTC on Saturday, 23 December 2017.
For the full current version of the article, go to http://en.wikipedia.org/wiki/Avalanche_transistor.
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This has been Matthew. Thank you for listening to random Wiki of the Day.
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