Electronics Forum / CAD / December 2007

MI5 Persecution: BBC Newscasters Lie & Deny They're Watching. Me
Central to the persecution. campaign waged against me for some nine years
now by. the Security Service is their use of the media, and in particular
the broadcast. media, to make clear to me that I am under surveillance ...

LTC Switchercad, on a Vista Notebook:
Strange problem, I made a new transistor:
bcp69.asy
Version 4

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with a Factory in Taiwan, our main products include Printed Circuit
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As a professional Mutilayler PCB Manufacturer, Supplier and Exporter
with a Factory in Taiwan, our main products include Printed Circuit
Board, PCB Assembly, PCB Board, Multilayer PCB and PCB Design, PCB
Layout Service. We provide you with high quality Mutilayler PCB and

How do I set the maximum power dissipation limits (power rating) for a
resistor in a PSpice schematic?
Thanks in advance.

One question related to P-CAD (2004).
Say you've created a small PCB board in P-CAD using copper pour
for large ground and would like to multiply the board for
stencil and pcb manufacturing.

"MARTHA" is a unique circuit analysis software package that was
originally developed at MIT in the early 1970's.  Rather than a "canned"
analysis package that only performs pre-programmed circuit analysis
operations, it is a circuit-description extension to the APL computer

Altium Designer for 20 English pounds sounds reasonable.  Are you sure that
was not one of their earlier Beta versions?  How did it work?  ORCAD is much
more expensive.

I recently received an ad from Altium on their software package.  But when I
went to their website Altium.com I found plenty of information but no price
tag.  I have used ORCAD and AUTOCAD in the past when I was employed, but
they are also expensive either to an uninformed ...

I'm trying to rotate/move the reference designator and the value of one
part in the sechematic, but to no avail. I'm unable to find how it can
be done without editing the library.
In the PCB it's not inmediate, but doable.

Anyone on the list know if there are any component librarys for mini- circuits
rf mixers like mcl
SBL-3 double balanced mixer  etc for use with protel I need it for a project for
college.

I am constructing and simulating a full-wave rectifier circuit using
the PSpice software. The circuit consists of an ac source, 4 BJTs in a
bridge design, and a resistor and capacitor connected in parallel
after the bridge. An input probe is placed near the ac source, and an

Guys
In the uk we have easy access to PCB-pool and PCB train. These
companies provide prototypes where the tooling is shared amongst
multiple designs.

When I try to use the model for the LM7301 in LTSpice, I get "unknown
subcircuit"- any ideas/ fixes anyone?
PB