Recent content by hananl

Hello, I need help with modulation techniques. If I have a sequence I want to transmit, and need to be modulated, how do I know its length? : I know the time duration of the sequence=t => t/T(carrier period)=number of cycles per sequence...

Lets say I email them, and they tell me X gram/(hour*meter^2) Then what?

Hi guys, This question is about the conversion between ppm and flow rate (I know you can't really convert between those two...) I have been looking on different products in the Internet, concerning the detection of a gas leak from pipes. It seems that each company is "measuring differently"...

Hi, I let it go, but anyhow, if you are interested: take the term for Js, the current for schottky diode: http://ece-www.colorado.edu/~bart/book/book/chapter3/ch3_4.htm section 3.4.1 the first equation. we would like to have something like J=J'*exp(qvb/kt-1) However, if we take J' as the...

es1, It seems resonable to add a constant, so I don't understand how I was told that: n=1+kt/(2*q*phi) ... ?

Hi, I know that there are deviations from the ideal model, also I undestand why (due to generation-recombination currents). So I can understand why for certain materil its n value is bigger(smaller) than another semiconductor. But I DO need to know how get this equation. infact I need to prove...

Hi, everywhere I look for the equation describing the current of a diode, I get I=I0exp(qvb/nkt-1) n=1 for ideal case. for non-ideal diode you got values between 1-2. in order to calculate n you have the equation: n=1+kt/(2*q*phi) (phi=contact barrier height) anyone knows how to...

Hi, I need to design an AM transmitter as a vlsi project (it needs to be located on smart dust later on). Does anyone have any good suggestions were to start from? I am familiar with vlsi, but don't really know how to implement such a big idea, into a vlsi simulation and circuit...

try: introduction to Fourier optics. pages 32 (starting on "the helmholtz equation") up to 50. author: joseph w. goodman.

Dear HallsofIvy, you are right, I have changed the title for "random process". I guess this is more correct. But can you help me with that?

random process Hello everybody, Does any of few familier with random numbers? I have a problem, i cannot resolve... I just copied paste from the pdf file. Since it won't be displayed here nicly, the .doc file is attached. I 'll be very thankfull. Thanks.

Hello all, I have problems with the next issue: I need to design a 2*2 3-db multimode interference coupler. I found some articles about that, but they are all very hard. the two inputs are single mode. i need to know how to choose the refractive index and length and width of the coupler...

more files - piezo and cytrometer if you r interested, i found more interesting articels: a file explaining about flowcytrometer. a file explaining methods how to switch many piezo electric crystals. enjoy, Hanan.

found the article Hey, I found the articel danger was talking about. I just downloaded it now, and if you are interested - i attached the doc file here. Hanan.

further question Hey all, Regarding for those questions of mine does anybody knows a way to control the inkjet cartige with pulse signals instead of the computer. I want to be able to "shoot" ink droplets from all the nozzles at the same time. I need to know how to operate each of the pizo...