Transistors - Old Technology?
 

On Thu, 18 Nov 2004 21:07:28 GMT, "Fleetie"
wrote:

"Stewart Pinkerton" wrote
OK, I'll 'fess up. The bipolar transistor was invented in 1947, as is
well known, but almost all modern electronics uses MOSFETS, which were
patented in 1928 by the brilliant Julius Lilenfield, who also patented
the junction FET in the same year.

However, the advance in solid-state amplifier techniques since that
time has been massively greater than that of the thermionic amplifier.

Krell use bipolars, IIRC.

But you must know that.

Indeed they do, as do the majority of audio amps above 100 watts per
channel. My reference to 'almost all modern electronics' wasn't
limited to audio gear.
--

Stewart Pinkerton | Music is Art - Audio is Engineering

Transistors - Old Technology?
 

On Thu, 18 Nov 2004 17:44:29 -0500, "Arny Krueger"
wrote:

"Pooh Bear" wrote in message

Stewart Pinkerton wrote:

almost all modern electronics uses MOSFETS

Uh ! Pardon ? The amplifiers I've been associated with in recent times
have actually stopped using Mosfets as output devices and we're using
bipolars again ( cost reasons - and limited sources of nice lateral
mosfets ).

Not a single mosfet in the signal path.

Care to elaborate ?

Two words: digital audio.

Eight words - I was not just talking about audio gear.
--

Stewart Pinkerton | Music is Art - Audio is Engineering