"Ian Molton" wrote in message
...
On Sun, 28 Sep 2003 10:20:46 GMT
"Trevor Wilson" wrote:


**Not enough. BJTs are more linear at those kinds of currents. In
fact, BJTs are more linear than those devices at *any* current.

Forgive a silly question, but isnt the linearity of a device in an amp
irrelevant once you employ feedback?

**Nope. Points:

1) Some amps employ no Global NFB.
2) Massive non-linearity (such as what is present with low bias MOSFETs) may
not be able to completely corrected by NFB.

May as well use BJTs. You get better distortion figures, lower PDiss and
lower cost per peak Amp delivered to the load.


--
Trevor Wilson
www.rageaudio.com.au