Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Re: CAREER DECESION
i agree GK... board design is the area where there are less skilled people... i would say it requires thorough understanding of basic electrical engineering rather developing skill... the demand for board designers are in huge but ppl donot know... i know ppl closing the...
A same cap is called different by different communities.
in AC terminology the cap actually conducts high freq noises. thus the name bypass
in DC terminilogy the cap keeps the DC voltages, applied to its terminals intact, thus the name decoupling cap.
spicap from avx and kspice from kemet give you the impedance plot of ur cap. from that u can calculate the lumped model (C+ESL+ESR) of the cap. but note that ESR is frequency dependent component and if u want take the peak ESR.
to calculate the distributed model of a cap u can use the paper by...
Re: ground loop noise
have atleast one solid plane to reference the signals.
keep it closer to pwr plane(if it were gnd)
add decaps wherever u think noise would appear...(this is just a brute force method actually u ll have to calculate the decap vaule and decide the placement after many...
is that 700mhz center freq with 2Meg bw???
i had faced issues with just 1MHz. but i think u can tweak it upto 10MHz by using wire pairs instead of a single wire to connect. more than 10Mhz ofcourse stray capacitance matters and also the connection in bread board is through small metal cans that...
difference between lt spice and pspice
SPICE is a simulation core that has been incorporated into many commercial tools with different flavors.. there exist lots of spice like PSPICE, LTSPICE, MDSPICE and HSPICE
Re: what is a fab note?
Fabnote:
it is a document given to the fab shop along with the deliverables to them, gerbers.
if u have some impedance spec, say that in fab note. what all u want say the fab shop to take care, put those in to a neat doc file and that is fab note.
"Do i need to take...
u r going to add up voltages is'nt it? so place in series... when u place in parallel currents will add up.... adding voltages sources in parallel needs u to specify source resistance...
i m not able to view to pic u have loaded...
instead of using pwl, can u try adding the voltages of pulse generators, appropriately setting voltages and time and connecting them in series...but u ll mess up ur schematic sheet.
Re: PCB design
>>What was your biggest 3 mistakes designing and why? every thing u do for today's technology is a mistake when u look at it with tomorrow's knowledge. biggest mistake is not looking at tomorrow :-)
>>most popular software that you use and why it is not popular because i used...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
