matched transistors

[>>>marjan<<<]

> >
> > Paralleling transistors has some possible benefits.  I remember something
> > about multiple transistors behaving as follows: the collector currents are
> > additive, but the noise of each transistor is uncorrelated, so although the
> > noise from two paralleled transistors is greater than one transistor, it is
> > not doubled, so you gain a little in signal to noise ratio.  


There was tech review of some pro mic preamp I've read, which used 3
ssm2210
pairs in parallel (on top of each other).


marjan