Amps Class G,H,T,Z

Gold_xyz · 13th December 2005, 08:08 PM

Hallo

After notorious audio amplifiers in class A, AB, D
there are the class G..H..T..Z amplifiers

which is the operation of these new amplifiers ?

(class-Z obvious by Zetex :O )

Thanks !

ilimzn · 14th December 2005, 12:39 AM

There is also class C (not directly used in audio but see below). Class T and Z are commercial names for variations on class D if I recall correctly.
Class G and H are composite output amplifiers that have to do with a 'regular' class A, AB or B amplifier with switched or modulated power rails for the output stage in order to get better efficiency. In some cases the switching or modulation of power rails is accomplished by class C output stages, but also class D has been used as well.

13th December 2005, 08:08 PM	#1
Gold_xyz diyAudio Member Join Date: Dec 2005 Location: Italy	Amps Class G,H,T,Z Hallo After notorious audio amplifiers in class A, AB, D there are the class G..H..T..Z amplifiers which is the operation of these new amplifiers ? (class-Z obvious by Zetex :O ) Thanks !

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14th December 2005, 12:39 AM	#2
ilimzn diyAudio Member Join Date: Feb 2005 Location: Zagreb	There is also class C (not directly used in audio but see below). Class T and Z are commercial names for variations on class D if I recall correctly. Class G and H are composite output amplifiers that have to do with a 'regular' class A, AB or B amplifier with switched or modulated power rails for the output stage in order to get better efficiency. In some cases the switching or modulation of power rails is accomplished by class C output stages, but also class D has been used as well.

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