bcarso
Well-known member
[quote author="buttachunk"]The MC33078 output stage appears to be Class A, though swinging to the negative rail may still be beneficial;
www.onsemi.com/pub/Collateral/MC33078-D.PDF[/quote]
I didn't see it class A as such---it's actually pretty hard to judge just from a topology, without values and transistor areas, etc. It is at least class AB when the current out is sufficient, since the quiescent I is quite a bit less than the max output I.
PRR had some typically trenchant remarks about the various forms of class A etc. in some not-too-old thread, but I forget where.
www.onsemi.com/pub/Collateral/MC33078-D.PDF[/quote]
I didn't see it class A as such---it's actually pretty hard to judge just from a topology, without values and transistor areas, etc. It is at least class AB when the current out is sufficient, since the quiescent I is quite a bit less than the max output I.
PRR had some typically trenchant remarks about the various forms of class A etc. in some not-too-old thread, but I forget where.