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Dennis Feucht

Complementary BJT Configuration

Dennis Feucht
Victor Lorenzo
Victor Lorenzo
4/8/2017 12:50:41 PM
User Rank
Blogger
Re: PNP-C / NPN-B node
Maybe this is somewhat related to local cultures, I knew it as "compound transistor" and "pseudo-Darlington", perhaps because "sziklai" is a little bit tong twisting in spanish.

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MFugere01
MFugere01
4/5/2017 12:00:49 PM
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Newbie
Re: PNP-C / NPN-B node
These have always been referred to as a Sziklai pair configuration any places that I have worked.   These and the standard Darlington configuration come in handy more often than you might think!

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ncallen
ncallen
4/5/2017 10:00:19 AM
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Newbie
darlington
In the 60s we called this complementary configuration "darlington" and the non-complementary configuration "super-alpha".

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dick_freebird
dick_freebird
4/2/2017 7:27:34 PM
User Rank
Teacher
PNP-C / NPN-B node
"Super beta" is nice, but without a base shunt on the NPN the AC and DC behavior outside small signal is worrisome and highly variable. Adding a shunt will depress the net beta somewhat (a tradeoff between DC gain and BW I suppose).

 

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