Electronics Forum / CAD / April 2005

I have 2 PADS PCB files of differrent design and want to combine them
into one so that I can save money in prototype design stage. Could I do
that?
Thanks!

Where can i find a table of standard drill sizes used in the UK

I´m using PSpice Capture 10.3
One of my simulations on a SMPS I´m using a BJT as a switch transistor
I would like to do a parametric sweep on the circuit with two
different BJTs models (lets say the transistors are BC547 and 2N2222)

Has anyone ever seen any software that allows autotrax to make use of
windows print drivers? or is that sort of thing even possible?
Dave

Is this generally acceptable? I want to overlap two of 0.136" holes by
about 0.024" in several places. They are plated with no electrical
function.
Thanks!

Hello,
I want ask you a question that certainly has already been asked a thousand
times. Even so, I didn't find a satisfying answer by googling.
My question is: How can I draw high quality electronic circuit schematics ?

I'm going to give Protel 99SE SP6 a try. Will be using it for design of
audio pcb's. A couple of years ago I have worked with Eagle which was very
basic and easy to work with.
What should I keep in mind when working with Protel regarding component

What software is better, Protel or ORcad?
Thanks.

Notice how this circuit causes some major voltage spikes to gazillions
of TV.  When the alternate solver is used, no problem.
Also notice that if the entire right half of the circuit containing all
the op-amps is deleted (it is presently not doing anything useful, so

i have a problem about hierarchical block design in orcad. In a
circuit i should introduce a black box:in this moment i don't know
what is inside this black box but i know which pins are used, so i
decided to use the hierarchical design.I want to work in layout

Anyone have a reliable spice model for the LM35 temp sensor they would
want to share?
Thanks...
Jim

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Dear Sir:
   When I DRC in Protel DXP I get much this message
"[Un-Routed Net Constraint Violation]    PCB1_998.PcbDoc    Advanced PCB    Net
DSP_AAOE

I'm trying to design a switch mode power supply of about 1200W. And I'd like
to simulate the noise I should expect to get from this circuit. So I want to
use OrCad Probe to plot out the spectrum in dBuV and compare it with the
requirements of FCC.

I am evaluating SuperSpice simulator.  Looks good; although I am more
interested in it's schematic capture.
I  currently use industrial strenght spice simulators (along with Cadence
ADE/artist), therefore I have no need for  it's spice engine.