Design

Terminate or not?
Is there any rule of thumb which says whether digital traces need to be terminated or not? Specifically with QDRII and DDR2 memory interfaces where the trace length is likely to be max 50mm, and a clock speed of 250MHz. Thanks. ... 18 Mar 2010 02:40

Essentials of the Legal Environment 2nd Edition 2008 Roger LeRoy Miller Test bank is available for purchase at affordable prices. Contact me at alltestbanks11[at]gmail.com to buy it today.
Essentials of the Legal Environment 2nd Edition 2008 Roger LeRoy Miller Test bank is available for purchase at affordable prices. Contact me at alltestbanks11[at]gmail.com to buy it today. ... 17 Mar 2010 09:06

IR Receiver/Demodulator
I need to design an IR receiver which will demodulate IR input at a given carrier frequency (~32kHz) over distances of 60-80 feet. I am not transmitting data, simply pulses of varying length (20ms-80ms). These pulses occur at the rate of approximately 1Hz. It is important that the pulse length is preserved from tra... 23 Mar 2010 20:37

Microeconomics 5e Jeffrey M. Perloff test bank and solution manual is available for purchase at affordable prices. Contact me at alltestbanks11[at]gmail.com to buy it today.
Microeconomics 5e Jeffrey M. Perloff test bank and solution manual is available for purchase at affordable prices. Contact me at alltestbanks11[at]gmail.com to buy it today. ... 16 Mar 2010 23:13

Investment Analysis and Portfolio Management Reilly 9th Edition complete Solution manual is available for purchase at affordable prices. Contact me at alltestbanks11[at]gmail.com to buy it today.
Investment Analysis and Portfolio Management Reilly 9th Edition complete Solution manual is available for purchase at affordable prices. Contact me at alltestbanks11[at]gmail.com to buy it today. ... 16 Mar 2010 15:06

Favorite reverse bias protection for battery circuits
Hi All, Still working on my color reader, and getting close. Biggest problem is that now I have almost TOO much drive on my LEDs, but that I can deal with! Now, to the latest problem. My system is for the visually impaired. I just put the batteries in one of my prototypes backwards, and it didn't last very lo... 25 Mar 2010 17:27

ESD and surge Protection
I have been going through the reference designs from microcontroller vendors and schematics of several development boards and everyone seem to include ESD and surge protection only for USB and CAN connectors but not for Audio (Line-in, Mic, Line-out), SD/MMC or RS232 ports. Is there any specific reason for this? Al... 16 Mar 2010 22:06

Band GAP energy
Hi all, What equations should I use to calculate the band GAP energy of semi-conductors, knowing : - The length of the edges of the crystal lattice. - The wavelength. Temperature is 300°K and the elements are: GaP, GaAs, InP, CdSe, AlSb, InAs, InSb. TIA ... 16 Mar 2010 10:14

Material for scrubbing Cu-clad boards
This is for those of you who are making their own PCBs for hobby, prototyping and low-volume production. I've seen things like fine sandpaper and steelwool recommended on hobbyist websites for cleaning copper-clad boards prior to transferring the pattern and etching. 40 years ago, I used wood ash. It worked ... 19 Mar 2010 14:22

instructor solution manual for Design with Operational Amplifiers and Analog Integrated Circuits (3rd Ed., Sergio Franco)
I have solutions manuals to all problems and exercises in these textbooks. To get one in an electronic format contact me at: kalvinmanual(at)gmail(dot)com and let me know its title, author and edition. solutions manual to A Course in Game Theory by Osborne, Rubinstein solutions manual to A Course in Modern Ma... 16 Mar 2010 00:07