Ejercicio Extra 3 (for everyone except Marlyn)

For the next network found:
a) Transfer Curve
b) Idq and Vgsq
c)Vds
d)Vd
e)Vs
f)Vg

tip take Vgs(on)=5

























La ignorancia afirma o niega rotundamente; la ciencia duda.
Voltaire

P.D. Sorry Marlyn you need to let some points to your classmates

Link for presentation polarización MOSFET en DC

Students of Electronica Basica, the next link is to see the presentation of the last Tuesday 28 of july

http://www.slideshare.net/projectronicsuvm/polarizacion-mosfet-1789221

Online Study Guide of the Book Electronic Devices

This link will help in your exam preparation

http://wps.prenhall.com/chet_boylestad_electronic_9/30/7734/1980129.cw/index.html

Is an study guide of the Book Electronics Devices and Circuit Theory of Robert Boylestad and you can also get it from the link box of this blog

Ejercicio Extra 2

Desing a circuit of BJT in a voltage divider network with a Vcc=28V with a Transistor TIP41, Icmax=4.5A and have to work in a Q-point of 2/3 of Icmax, Ve=1/4 Vcc. Use commercial value resistors.

Transfer Curve in Matlab

Here you have a help for do the program of a FET transfer curve this one is based on matlab, you have to make it in other languaje as Visual B, C#, etc.

Channel N
Idss=8; constant you have to give this value
Vp=-6;
Vgs=(Vp:0.1:0);
Id=Idss*((1-(Vgs/Vp)).^2);
plot(Vgs,Id)

Channel P
Idss=8
Vp=6
Vgs=(0:0.1:Vp)
Id=Idss*((1-(Vgs/Vp)).^2)
plot(Vgs,Id)

As you can see is not that hard only requirs 5 lines.

Link for presentation polarización FET en DC

Students of Electronica Basica, the next link is to see the presentation of the last Thursday 24 of july

http://www.slideshare.net/projectronicsuvm/polarizacin-fet

Formulas Polarización FET y MOSFET

Electronica Básica Gpo 02T

The next link is to see the formulasheet of FET transfer curves and polarization also you can found it, in the book of Teoria de Circuitos pages 250 and 284, those formulas you can print it and bring it to the exam (the only ones allowed), also can be very usefull for your final projects.

http://picasaweb.google.com/projectronics.uvm/PolarizacionFET#

Regards

Sergio Vásquez Gómez

Ejercicio Extra 1

Found the values of the Resistors given RE1=RE2, Ie=3mA and Vcc=24V, I remind you that the firstone to solve it have half extra point.

THE ENGINEER'S DICTIONARY

· MAJOR TECHNOLOGICAL BREAKTHROUGH - Back to the drawing board.
· DEVELOPED AFTER YEARS OF INTENSIVE RESEARCH - It was discovered by accident.
· PROJECT SLIGHTLY BEHIND ORIGINAL SCHEDULE DUE TO UNFORSEEN DIFFICULTIES - We are working on something else.
· THE DESIGNS ARE WELL WITHIN ALLOWABLE LIMITS - We just made it, stretching a point or two.
· CUSTOMER SATISFACTION IS BELIEVED ASSURED - We are so far behind schedule that the customer was happy to get anything at all from us.
· CLOSE PROJECT COORDINATION - We should have asked someone else; or, let's spread the responsibility for this.
· THE DESIGN WILL BE FINALIZED IN THE NEXT REPORTING PERIOD - We haven't started this job yet, but we've got to say something.
· A NUMBER OF DIFFERENT APPROACHES ARE BEING TRIED - We don't know where we're going, but we're moving.
· TEST RESULTS WERE EXTREMELY GRATIFYING - It works, and are we surprised!
· EXTENSIVE EFFORT IS BEING APPLIED ON A FRESH APPROACH TO THE PROBLEM - We just hired three new guys; we'll let them kick it around for a while.
· PRELIMINARY OPERATIONAL TESTS ARE INCONCLUSIVE - The darn thing blew up when we threw the switch.
· THE ENTIRE CONCEPT WILL HAVE TO BE ABANDONED - The only guy who understood the thing quit.
· MODIFICATIONS ARE UNDERWAY TO CORRECT CERTAIN MINOR DIFFICULTIES - We threw the whole thing out and are starting from scratch.

Welcome Engineering Student

Hi Lince, I create this blog for you Student of Engineering in UVM Campus Hermosillo, the aim of this blog is to create a site to publish on the web and share with other students your projects, the ones that you make every semester, specially is designed for helping other students in the little details that make a circuit or a mechanical design fail, because like Sir Isaac Newton says "If I have seen farther than others, it is because I was standing on the shoulders of giants".

Also I add a few tools for helping you and have everything in the same site.