Engineering - September 2007

2007-09-29 14:05:59 · 4 answers · asked by ns 1

How to get a differential gain > 40V/V with a diferential pair with PMOS input stage and resistive loads with Vdd=2.5V, Vss=-2.5V and Vo=0V by changing any value of bias current, transistor size and resistance?

Differential Amplifier with Resistive Loads

* Set options
.option post probe

* Element Statements
vdd vdd 0 2.5
vss vss 0 -2.5
m1 vout- vin+ 1 vss cmosn w=100u l=1.0u
m2 vout+ vin- 1 vss cmosn w=100u l=1.0u
r1 vdd vout- 50k
r2 vdd vout+ 50k
i1 1 vss 100u
e1 vin+ 2 3 vss 0.5
e2 vin- 2 3 vss -0.5
vcm 2 vss 2.5
vs 3 vss dc=0

* Control statements
.dc vs -0.5 0.5 0.01
.probe v(vout+,vout-)
.tf v(vout+,vout-) vs
.op

* Include device model with filename "cmos05.mod"
.include cmos05.mod

.end

2007-09-29 13:50:18 · 1 answers · asked by Earthman 2

2007-09-29 13:49:30 · 3 answers · asked by janvincent21 1

2007-09-29 12:41:59 · 1 answers · asked by Anonymous

and why??

2007-09-29 12:27:30 · 10 answers · asked by Anonymous

http://img254.imageshack.us/img254/7421/elewe7.jpg I know the total resistance is between point A and B is 12 k but I don't understand how to simplify this circuit.

2007-09-29 12:12:15 · 3 answers · asked by Chris 2

2007-09-29 11:59:19 · 9 answers · asked by alphajoe 1

2007-09-29 11:58:13 · 3 answers · asked by lola 1

okay here is the problem.. A 60kg mass is suspended from a rope which is threaded over a mass less pulley and then attached to a hook on a vertical wall. Describe a free body diagram for the mass and another for the hook and show how each is in equilibrium. Okay..so there is a force between the hook and the pulley, but what about the hook and the wall? HELP!!

2007-09-29 11:44:00 · 2 answers · asked by jody_parch 1

http://www.youtube.com/watch?v=Qa7PN-8T2VY

Explain

1. What caused all the bright flashes of light?

2. What caused all the horizontal and rapid explosions so far
below the collapsing levels? (and please don't say it was
due to air pressure, because these look like focused point
source explosions, and this cannot possibly be caused by
built up air pressure, since this is not an "air tight" leak-proof
sealed environment, due to all the cracked ceilings and
damaged upper floors) - don't tell me you can inflate & pop
a balloon if the balloon has lots of leaks and holes in it!

3. What caused all the molten metal dripping out of the South
Tower? Melting point of steel = 1532 C, but the hottest
temperature that a jet fuel (kerosene) fire can reach, burning
in still or stationary air (not moving air) is only 250 C. And
don't say this is molten aluminium ( melts at 600 C).
Why do steel or Al frying pans not melt?

2007-09-29 11:25:22 · 12 answers · asked by Anonymous

The diagram can be found in engineering statics textbook 11th edition as problem 3-33.

2007-09-29 10:20:59 · 1 answers · asked by edgar s 1

the water out of the tank. Radius= 5 feet

2007-09-29 10:03:44 · 2 answers · asked by Anonymous

i connected a ZTX 300 transistor withe a 10k variable resistor the supply voltage was 6v , i've taken the results for every rime i increase the variable resistor size . i get these results :
Ib : 0 , 23.7 , 52.7 , 56.8 , 57.6 , 57.7 , 57.9 , 57.9
Ic : 0 , 0.12 , 0.42 , 0.68 , 1.24 , 2.89 , 5.61 , 5.62
these results in mA ...
- Does the results look correct and how do i know that ??

2007-09-29 07:38:16 · 3 answers · asked by Ahmad M. Alawi 3

I would like to make it move round and round.

2007-09-29 07:14:16 · 2 answers · asked by Billy_Bob 1

If life is the decive factor when judging the safety of nuclear energie why not compare the number of casaulties caused by the production of electricity by all know means. Including the Chernobyl disaster. Anybody have such data available ?
Thanks, Wim de Weerd, Germany

2007-09-29 06:55:01 · 6 answers · asked by uraanwim@yahoo.de 1

I want to interfere AM/FM radio waves in my house. My sister is listening to friggin disney channel radio and I want to get rid of this stupid music. Where I could find a transmitter that could do that?

2007-09-29 05:58:06 · 4 answers · asked by Bob 2

How Is It That SHM Can Break Things?

I Know That Some Materials Have A Frequency At Which They Break, But Why?

2007-09-29 05:40:22 · 3 answers · asked by Oel Pezlo 3

Electronic - Capacitor

2007-09-29 02:16:44 · 2 answers · asked by Anonymous

2007-09-29 00:56:56 · 4 answers · asked by carrots and peas 1

2007-09-29 00:31:24 · 13 answers · asked by tamil 1

please tell in details.

2007-09-28 23:29:28 · 4 answers · asked by deepak_8584 1

A number lying between 1000 and 2000 is such that on division by 2,3,4,5,6,7 and 8 leaves remainders 1,2,3,4,5,6 and 7 respectively. The number is
a) 1726
b) 1822
c) 1548
d) 1922
e) 1679

2007-09-28 19:12:49 · 12 answers · asked by deepa r 1

Whats the difference between surge protection and grounded for ur computer?

2007-09-28 18:55:38 · 3 answers · asked by NeNe 1

mere can i get desighns for making home made bongs out of thing you usualy dont have to go buy like i make gravity and anti gravity out of old containers ?

2007-09-28 17:30:22 · 4 answers · asked by poeticman 4

can i ask

2007-09-28 16:41:17 · 3 answers · asked by MuMu_bear 1

2007-09-28 15:03:34 · 2 answers · asked by fhm20us 1

The two shafts of a speed-reducer unit are subjected to couples of magnitude M1 = 18 N-m and M2 = 7.5 N-m. Replace the two couples with a single equivalent couple, specifying its magnitude and the direction of its axis.

Diagram:
http://i236.photobucket.com/albums/ff35/bugmenot_07/72.jpg

2007-09-28 15:00:53 · 2 answers · asked by Anonymous

2007-09-28 14:52:08 · 2 answers · asked by ahhh 1

when superheated steam (ex.102 bar temp, 510 centgrade,) pressure reduced to 13 bar , water spray is applied for reduce it temprature, why it is required ? pl, Explain me.

2007-09-28 13:18:39 · 3 answers · asked by amshaikh748 1

I havent graduated HS yet but I was thinking about starting an engineer firm. My ultimate goal is to start one that operates in many countries like England and Japan.

2007-09-28 09:55:05 · 3 answers · asked by Simply Me 5