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transistors

Wendy

Wendy

Joined Mar 24, 2008
23,429
I assume you mean the alpha of the transistor.

Alpha and Beta are two different aspects of the same thing. Alpha is usually just under one, and can be calculated directly from beta, which is the current gain. Since Beta is very dependent on the voltage and current setups (in theory it should be a fixed number) Alpha will vary a little too. However, the different between an Alpha of .9992 and .9995 is a lot less significant that a large shift in beta.

From the AAC ebook:
Chapter 4: BIPOLAR JUNCTION TRANSISTORS
 
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