Electronics Forum / Electronics / September 2004

My 40 year old valve oscilloscope blew the mains fuse. I replaced the fuse but
now it just makes suspicious something-is-getting-hot-and-might-explode sort of
crackling noise (as if one of the electrolytic capacitors is getting ready to
make a quick exit). Given its age it's ...

While in the process of trying to find a solution to a problem, I
received several suggestions that PIC or Basic-Stamps might be a
solution.  In order to fairly evaluate those suggestions, and decide
whether or not I'm capable enough to use that approach, I'd like to get

    I need a very simple 2 hour timer to remind me to take my medications.
I have made up a lot of circuits from electronic magazines so I feel
confident that I could make something up provided that I have the same
level of instructions. The timer needs to be small enough to carry

I'm looking for some info about building a hi-precision thermally controlled
water tank. Could anyone give me some hints, links, or suggestions of any
kind?
Thanks in advance.

I have two Motorola CyberSURFR Wave modems
(http://broadband.motorola.com/noflash/cybersurfr_home.html)and one
power supply to suit. They are free to anyone who wants to collect
them in Melbourne Eastern suburbs. If you can find a use for these you

Does anyone know a good cookbook for 555 timer?
Thanks.

Hi, all
Anyone knows of an easy way to create a bootable CD for MS-DOS?
I want to create a disk with diagnostic applications and utilities. All
applications are running from MS-DOS.