Standard quasi complementary is not the only topology for an output stage that uses the same polarity output devices in push-pull. There are others that do not have the problems you mention. Also, when looking at transfer characteristics it's almost pointless to divine what will be going on, on the basis of an output transistor in isolation. Most amplifiers use emitter resistors in the output stage making fundamental differences in gain curves for 'complementary' (because they never are completely) transistors far less of a problem than looking at transistor specs would suggest - to the point that precise pairing or selection is mostly a waste of time. In a similar manner, even two transistors of the same type have tolerances between them (and often not so small) so using 'single sex' outputs is not a guarantee for perfect symmetry even in topologies where it is inherent, just like asymmetry is not inherently the biggest problem in complementary output stages.
Ahem! .... aldovan is NOT using TIPs, he just mentioned them in a generic philosophical question "can NPN and PNP be matched if different brands?"
Do they *really* measure 0.6V BE ? 😱
FDP !!!!!!!!!!!!! 😡
Then they were made recently, on purpose, to cheat people.
Not easy because they needed to get relatively expensive and definitely hard to find metallic TO66 cases , buy, hey, anything is possible to make a fast buck.
I could not understand why is Mercadolivre do Brasil *full* of them, now I know. 🙄
10 X Transistor Ad161 + 10 X Transistor Ad162 / Kit C/20 Pçs - R$ 110,00 no MercadoLivre
They have so many that they are selling them in lots of 20 😕
This photo is get from ebay !
AD161 Original New Tunsgram Transistor | eBay
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