Ross's Web Page

Undergraduate Lab Notes

Resistor Cube

In Elec1102 one of the lab problems was the balanced resistor cube. This is a very common undergraduate problem with a rather simple solution based upon symmetry. Like everyone else I've always pointed out that a rigorous solution based upon nodal or mesh analysis would be very difficult. Well, I bit the bullet and tried it by hand and found that it was easier than I thought it'd be. Here's my (rough) solution.

MemoNews

MemoNews (the palmpilot newsreader formally known as PNews) is a perl program which runs on Linux (and other platforms with a decent perl implementation), gathers nntp news, threads subjects, and packs it into a MemoPad file suitable for reading in a Palm Pilot. It is basically an offline reader which throws away most header info and quotations in order to save space. It can also be used to post messages and followups. V1.4 has automatic reply addressing, signature adding and quoting.

It requires perl and the Net::NNTP module (available in the libnet package) to be installed and running correctly on your system. These can be found at a CPAN site. Here is a local copy of libnet (probably out of date).

The script tinkers directly with the MemoDB.pdb file so it is very advisable to keep separate backups just in case something goes wrong.

To download MemoNews1.4 click HERE . To extract it using GNU tar, type tar -xvzf MemoNews1.4.tar.gz .

To download MemoNews1.3 click HERE .

Ross Hutton hutton@ee.usyd.edu.au .