On Tue, 13 Mar 2007 00:35:04 GMT, Fred Bloggs
wrote:

View in a fixed-width font such as Courier.


.
.
. .-----.
. | |
. --- |
. R2
. | ve -ve
. +------+----------+---Rg----
. | | |
. | | gm1vbe1 |
. hie1 /|\ |
. vd | \v/ |
. -- ----' | |
. 2 | |
. +-----. |
. | | |
. R3 hie2 /|\ gm2vbe2
. | | \v/
. | | |
. +-----+----+---- -vo/2
. |
. |
. R4
. |
. |
. ---
.
.
.
. R4
. ----------
. vo R2||(Rg/2)
. Av= -- = -------------------------------
. vd 1 1
. 1+ --------- x -------------------
. R2||(Rg/2) gm1(1+gm2(R3||hie2))
.
.
.
.
.


Gack! You really know how to over-complicate a simple analysis don't
you ?:-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.