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Issue 250 << Issue 249 | Issue 251 >>
The Magic Of Water Desalination

1 Jul, 2009

What do Perth, Saudi Arabia and cruise ships have in common? They all rely on desalination for fresh water. And the Gold Coast, Sydney and Adelaide are about to join the club!

Mailbag

3 Jul, 2009

Letters and emails should contain complete name, address and daytime phone number. Letters to the Editor are submitted on the condition that Silicon Chip Publications Pty Ltd may edit and has the right to reproduce in electronic form and communicate these letters. This also applies to submissions to "Ask SILICON CHIP" and "Circuit Notebook".

High-Current, High-Voltage Battery Capacity Meter, Pt.2

4 Jul, 2009

Last month we presented the full description, operation and construction details of our new Battery Capacity Meter. This month we guide you through the once-only setup and calibration. We also explain in detail how to use it!

Review: Two Low-Cost DVD Recorders

6 Jul, 2009

He's held onto a large library of VHS tapes for decades so Barrie Smith thought he could make good use of the Easter break by engaging with DVD recording. Here are his reactions to a Tevion DD1018 and an AWA DR711 DVD recorder.

Serviceman's Log

10 Jul, 2009

As a change this month, a colleague of mine is going to talk about the confusion electronic systems in cars can cause. After all, when it comes to cars, everyone's an expert (or has a mate who thinks he is). I'll let him tell the story in his own words.

Lead-Acid Battery Zapper & Desulphator Mk.3

12 Jul, 2009

Here is a revised version of the popular Lead-Acid Battery Zapper featured in the May 2006 issue of SILICON CHIP. It is now separate from the Battery Condition Checker and much easier to build. At the same time it has been revamped for more reliable long-period operation with 6V, 12V & 24V batteries.

Multi-Function Active Filter Module

14 Jul, 2009

This versatile Active Filter is ideal for use as an active crossover in loudspeaker systems but has lots of other uses as well. It can be configured as a low-pass filter (for driving sub-woofer amplifiers), as a high-pass filter or as a bandpass filter, simply by moving a few on-board jumper links.

CeBIT: What's New At Australia's Largest IT Show?

16 Jul, 2009

A quick look at Australia's largest IT show . . .

Vintage Radio

18 Jul, 2009

Featuring no less than eight valves, the Lyric Model 70 broadcast-band receiver is an upmarket American-made set from the late 1920s. It's a tuned RF design with single-knob tuning and a number of interesting design techniques.

Hand-Held Metal Locator

20 Jul, 2009

Ideal for finding steel frames and studs, steel bracing and nails in plaster walls, this Metal Locator can also show the length of the tang in knife handles, screwdrivers and other tools. As well, it can discriminate between ferrous and non-ferrous metals.

Publisher's Letter

21 Jul, 2009

Ask Silicon Chip  - 2 Jul, 2009

Circuit Notebook  - 8 Jul, 2009

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