Electronics Computer-Aided Design

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Protel negative

I use Protel 2.8 and it would like to print the drawings PCB in negative. How to do that? TIA Fernando Carvalho
3 comments posted 21yrs
posted by fjpc60
3 comments posted 21yrs posted by fjpc60

Problems with SPICE models from vendors

The LM324 model from TI works fine,but the one from National Semiconductor is junk. I tried numerous Analog Devices mod...
37 comments posted 21yrs
posted by robertbaer
37 comments posted 21yrs posted by robertbaer

BGA pin coordinate

In Pads Logic, how to define a component with BGA pins? For BGA package, the pin numbers are defined as A1, A2,... A9; B...
2 comments posted 21yrs
posted by eehobbyist
2 comments posted 21yrs posted by eehobbyist

SPICE on entered schamatic(s)

Any cheap systems that does that? With (relatively) modern op-amps?
10 comments posted 21yrs
posted by robertbaer
10 comments posted 21yrs posted by robertbaer

SuperSpice .subckt and variable

I want my subcircuit to have variable/parameter/value. Something like every resistor has resistance.. So, when I draw s...
1 comments posted 21yrs
posted by orangeKDS
1 comments posted 21yrs posted by orangeKDS

BOM creation in PCAD

Hi, BOM creation in PCAD seems really weird. It doesnt group all the same component types in the same row in the BOM. e...
1 comments posted 21yrs
posted by kunalshenoy
1 comments posted 21yrs posted by kunalshenoy

building your own mic preamp and a/d converter

I just bought a creative nomad jukebox3 from ebay: http://www.nomadworld.com/products/Jukebox3/ Bought it to do some fi...
0 comments posted 21yrs
posted by marc75D
0 comments posted 21yrs posted by marc75D

How important are chamfered routes?

I was once told by a professional layout person that leaving a 90 degree inside corner on intersections of traces and/o...
5 comments posted 21yrs
posted by spamgoeshere4
5 comments posted 21yrs posted by spamgoeshere4

Yahoo group for FreePCB, open source PCB layout

I could not find much info on users of FreePCB, so I started a Yahoo group. FreePCB is an open source program for PCB l...
1 comments posted 21yrs
posted by spamgoeshere4
1 comments posted 21yrs posted by spamgoeshere4

What is correct method?

For general reference, if there is an instance where certain mounting holes should be part of a chassis ground net, is...
4 comments posted 21yrs
posted by ivanzr1
4 comments posted 21yrs posted by ivanzr1

OT: Search Engines for PC Searching?

Does there exist a search engine for the PC that allows searching your hard-drive for files that contain MULTIPLE words...
16 comments posted 21yrs
posted by thegreatone
16 comments posted 21yrs posted by thegreatone

SuperSpice and new component

I need to analyse VERY simple circuit with SuperSpice (or should I use some other program?). Schematics has some resist...
51 comments posted 21yrs
posted by orangeKDS
51 comments posted 21yrs posted by orangeKDS

Via pads in mid-layers

In a multi-layer pcb, if I have a via going from the top layer to the bottom layer, is it necessary to have a full pad...
7 comments posted 21yrs
posted by david.nospam
7 comments posted 21yrs posted by david.nospam

Protel netlist outputs

My boss wants to proof circuits with component/net netlists in a condensed readable fashion, however Protel 2004 only p...
9 comments posted 21yrs
posted by ivanzr1
9 comments posted 21yrs posted by ivanzr1