1 Aug, 2007

Technology is fighting the war against terrorists

3 Aug, 2007

More suprises - how solar water heating can be environmentally worse than gas heating, for example.

6 Aug, 2007

The press release looked intriguing, telling of an Aussie tracking device helping to foil a car-jacking in Nigeria (see report at right). But (being the inquisitive creatures we are) we wanted to know the story behind the story. Just what is this "EziTRAK" and what makes it so special? Ross Tester explains.

7 Aug, 2007

A new super-low distortion op amp.

9 Aug, 2007

10 Aug, 2007

In Pt.4 this month, we present a high-performance Stereo Preamplifier & Remote Volume Control module. It's a low-noise, low-distortion design specifically engineered for the Class-A amplifier but which can also be used with other stereo power amplifiers.

13 Aug, 2007

If your car's turbocharger has just been running, it is vital to allow the engine to idle for a few minutes before switching off. This Adaptive Turbo Timer will do the job automatically. It only operates when necessary and sets the idle time according to how hard you've driving.

18 Aug, 2007

Adding a subwoofer to your home theatre or hifi system is the easiest way to extend the bass response. A relatively small speaker system driven by a big amplifier can give heaps of bass while not taking up a lot of space. This new Subwoofer Controller has all the features you could want, including low and high pass filters, parametric equaliser and auto-turn on.

20 Aug, 2007

Interesting circuit ideas which we have checked but not built and tested. Contributions from readers are welcome and will be paid for at standard rates.

22 Aug, 2007

Last month, we gave some of the history of Nixie tubes and described the design of the NX14 clock and its circuit. This month, we give the assembly details and describe the optional blue LED up-lighting which we think that most constructors will definitely want, together with the attractive see-through Perspex case.

23 Aug, 2007

First introduced back in the 1930s, car radios have been popular with motorists ever since. Here's a brief look at how they evolved, along with the restoration details for an AWA 948C dual-polarity car radio.

24 Aug, 2007

Getting down on my hands and knees to service a dishwasher is not much fun but this was one those occasions when I had no choice. I'd much rather service TV sets any day, so let's start off with one of those.

26 Aug, 2007

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