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Issue 235   View the articles in this issue >>
Beyond The Capacitor There Is The Ultracapacitor How To Get Into Digital TV, Pt.2
12V-24V High-Current Motor Speed Controller Charge controller for 12V lead-acid or SLA batteries

1 Apr, 2008

Beyond The Capacitor There Is The Ultracapacitor

And you always thought that the Farad was a ridiculously large unit... Start thinking in KILOFarads!

1 Apr, 2008

How To Get Into Digital TV, Pt.2

Last month, we introduced the topic of Digital TV and strongly advocated the purchase of a High-Definition Set-Top Box or Personal Video Recorder. In this second part, we discuss the antenna installation and what you need to do to ensure the most reliable and interference-free reception.

1 Apr, 2008

12V-24V High-Current Motor Speed Controller

Last month, we described the circuit and software features of our new High-Current DC Motor Speed Controller. This month, we show you how to build and test it.

1 Apr, 2008

Charge controller for 12V lead-acid or SLA batteries

Upgrade your standard 12V lead-acid battery charger or solar cell booster to a complete 2 or 3-step charger using this Charge Controller. It includes temperature compensation and LED indication. All parameters are adjustable for charging lead-acid or Sealed Lead Acid (SLA) batteries.

1 Apr, 2008

Two-Way Stereo Headphone Adaptor

Do you have a stereo amplifier without a headphone socket but want to listen to your music via headphones? If so, this versatile Stereo Headphone Adaptor will do the job. It connects between your amplifier and loudspeakers, has several operating modes and features two output sockets with individual volume controls.

1 Apr, 2008

A Safe Flash Trigger For Your Digital SLR Camera

Many of today's digital SLR cameras risk serious damage if used with an external electronic flash, whether that is a portable type or a large studio "strobe". We found this was the case here at SILICON CHIP so we have produced a flash trigger to ensure the camera's safety. You can do likewise - but beware of the JISP!

1 Apr, 2008

Serviceman's Log

Do you ever get the feeling that things are just getting too complicated? That's certainly the case with TV sets, particularly when it comes to servicing.

1 Apr, 2008

Vintage Radio

Shortwave converters were popular for a brief period in the 1930s and 1950s. In an era when money was tight, they provided a low-cost means of converting a standard broadcast-band receiver to shortwave reception.

1 Apr, 2008

Publisher's Letter

Your future electric car may use ultracapacitors

1 Apr, 2008

Mailbag

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".

1 Apr, 2008

Circuit Notebook

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.

1 Apr, 2008

Ask Silicon Chip

Got a technical problem? Can't understand a piece of jargon or some technical principle? Drop us a line and we'll answer your question. Write to: Ask Silicon Chip, PO Box 139, Collaroy Beach, NSW 2097 or send an email to silchip@siliconchip.com.au

1 Jan, 1970

Notes&Errata

Issue 234   View the articles in this issue >>
How To Get Into Digital TV How To Solder Surface Mount Devices
PICAXE VSM: I'ts Time to Play; Pt.3 Review: Tevion TEV8200 HD Set-Top Box

1 Mar, 2008

How To Get Into Digital TV

Perhaps you are blissfully unaware of it - but the Australian Government plans to progressively switch off all analog TV transmitters, starting in less than two years time. And High Definition digital TV programs are now being shown on "free to air" commercial, ABC and SBS TV. Those programs are not available via Standard Definition digital tuners or set-top boxes. So what do you need to do?

1 Mar, 2008

How To Solder Surface Mount Devices

Many electronics enthusiasts hesitate to build projects involving surface-mount devices (SMDs) because they're daunted by the prospect of soldering such tiny parts to a PC board. But it can be done. Jim Rowe shows us how...

1 Mar, 2008

PICAXE VSM: I'ts Time to Play; Pt.3

In the third part of our PICAXE VSM tutorials Clive Seager talks us through using some of the 'virtual instrumentation' included with the software - from a simple voltmeter to an advanced I2C protocol debugger!

1 Mar, 2008

Review: Tevion TEV8200 HD Set-Top Box

If you currently have an analog TV set or a digital projector and don't want to change it, you will need a high definition set top box to watch HD TV broadcasts - now and more importantly in the future.

1 Mar, 2008

Electric Flight

Battery-powered aircraft creates aviation and technology history

1 Mar, 2008

The I2C Bus: A Quick Primer

Developed by Philips over 25 years ago, the I2C bus is now a well-established standard for low to medium-speed data communication between ICs. However, its basic operation still isn't well understood, except by people in the chip design business. Here's a quick primer to bring you up to speed.

1 Mar, 2008

A Low-Cost PC-to-I2C Interface For Debugging

Tracking down problems in circuits which are programmed via an I2C bus can be tricky and time-consuming, unless you take advantage of a debugging program running on a PC. Here's a low-cost, easy-to-build printer port to I2C interface designed to work with the Philips/NXP debugging program URD312.exe.

1 Mar, 2008

One-Pulse-Per Second Driver For Quartz Clocks

This simple add-on module for the GPS-Based Frequency Reference is designed to drive the escapement coil of a low-cost quartz clock movement. It uses the 1Hz GPS pulses available at the rear of the Frequency Reference so that the clock can display local time with GPS-based accuracy.

1 Mar, 2008

A Digital VFO with LCD Graphics Display

This DDS VFO uses a widely available recycled Nokia cellular phone LCD to display analog and digital frequency readouts, text, and VFO status messages

1 Mar, 2008

12V-24V High-Current DC Motor Speed Controller, Pt.1

This 12V or 24V high-current DC Motor Speed Controller is rated at up to 40A (continuous) and is suitable for heavy-duty motor applications. All control tasks are monitored by a microcontroller and as a result, the list of features is extensive.

1 Mar, 2008

Serviceman's Log

Fixing TV reception problems in units can be a real problem, especially if other technicians have been involved and you don't know what they've done. It also doesn't help if you're told that the fault is in equipment that doesn't even exist.

1 Mar, 2008

Vintage Radio

Many valve radios were battery-powered but a lot of the battery types used are now obsolete and no longer available. However, with a little ingenuity, sets that would otherwise be static displays only can be restored to full working order.

1 Mar, 2008

Publisher's Letter

High-definition TV in limbo until the Olympics

1 Mar, 2008

Mailbag

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".

1 Mar, 2008

Circuit Notebook

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.

1 Mar, 2008

Ask Silicon Chip

Got a technical problem? Can't understand a piece of jargon or some technical principle? Drop us a line and we'll answer your question. Write to: Ask Silicon Chip, PO Box 139, Collaroy Beach, NSW 2097 or send an email to silchip@siliconchip.com.au

Issue 233   View the articles in this issue >>
Review: ATTEN ADS7062CA Digital Storage Scope PICAXE VSM: The PICAXE Circuit Simulator, Pt.2
How to get more than 100 MPG from a Toyota Prius UHF Remote Mains Switch Transmitter

1 Feb, 2008

Review: ATTEN ADS7062CA Digital Storage Scope

The ADS7062CA Digital Storage Oscilloscope from ATTEN incorporates many features found only in dearer oscilloscopes. It represents very good value for money and its bandwidth is high enough for most applications, including video.

1 Feb, 2008

PICAXE VSM: The PICAXE Circuit Simulator, Pt.2

In this second part of our mini-series, Clive Seager talks us through using the new PICAXE VSM simulation software.

1 Feb, 2008

How to get more than 100 MPG from a Toyota Prius

The Toyota Prius has been the most successful and popular hybrid car produced so far but it has one weakness - it cannot go very far on battery power alone. This article tells how a large Lithium-ion battery was added to a Prius, giving it the ability to drive much further on battery power, thereby greatly increasing fuel economy.

1 Feb, 2008

UHF Remote Mains Switch Transmitter

Designed to control the UHF Remote Mains Switch, this hand-held transmitter can operate over a 200m range. It's based on a PIC micro and a pre-assembled transmitter module, making it easy to build and get going.

1 Feb, 2008

UHF Remote Controlled Mains Switch

Want to switch mains appliances on and off remotely? This UHF Remote Mains Switch can do it for you. It's operated using a hand-held UHF transmitter or you can team it with the Water Tank Level Meter Base Station described last month to automatically control mains-operated water pumps. An in-built timer also enables the unit to turn off automatically after a preset period.

1 Feb, 2008

Shift Indicator & Rev Limiters For Cars

If you drive your car for optimum performance, you will want this Shift Light Indicator to indicate just when to change gears. As a bonus, it incorporates a Rev Limiter which throttles back the fuel injectors.

1 Feb, 2008

Vintage Radio

DC-to-AC inverters from the valve era, Pt.2

1 Feb, 2008

Publisher's Letter

Microcontroller projects can be simple and complex at the same time

1 Feb, 2008

Mailbag

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".

1 Feb, 2008

Circuit Notebook

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.

1 Feb, 2008

Ask Silicon Chip

Got a technical problem? Can't understand a piece of jargon or some technical principle? Drop us a line and we'll answer your question. Write to: Ask Silicon Chip, PO Box 139, Collaroy Beach, NSW 2097 or send an email to silchip@siliconchip.com.au

1 Feb, 2008

Serviceman's Log

When is it time to retire an ageing TV set? Most people are only too happy to scrap a faulty set and go and buy the latest technology. Then there are those who are too devoted to their existing set to see it go - especially if they paid a lot of money for it.

Issue 232   View the articles in this issue >>
Denon DCD-700AE compact disk player PICAXE VSM: The PICAXE Circuit Simulator!
Emergency 12V Lighting Controller Build The

1 Jan, 2008

Denon DCD-700AE compact disk player

Now that DVD players are being made in the squillions and are very cheap, there are few hifi manufacturers actually making CD players. Denon is one of the few makers and their products are highly prized. The Denon DCD-700AE CD player is a high quality machine which provides the bonus of pitch control and being able to play MP3 disks.

1 Jan, 2008

PICAXE VSM: The PICAXE Circuit Simulator!

Ever wondered whether your latest scathingly brilliant PICAXE project idea would actually work? Well, now you can find out before you build it, with the new PICAXE circuit simulator software! Mr PICAXE, Clive Seager, talks us through the latest PICAXE software offering from Revolution Education.

1 Jan, 2008

Emergency 12V Lighting Controller

This easy-to-build project automatically turns on the power for 12V emergency lights within a second or two of a mains power failure. Build it and you won't have to search for candles or your torch in the event of a blackout.

1 Jan, 2008

Build The "Aussie-3" Valve AM Radio

So you thought valve technology was dead! Well it is - but we have exhumed enough of it to produce a 3-valve radio which has quite a respectable performance. It is a superheterodyne circuit, based entirely on readily available components. It is suitable for moderately-experienced constructors - even those who've never touched a valve in their lives!

1 Jan, 2008

PIC-Controlled Swimming Pool Alarm

Reduce the possibility of a drowning in your swimming pool. If someone falls in, an excruciatingly loud siren sounds.

1 Jan, 2008

The Minispot 455kHz Modulated Oscillator

The Minispot produces a 455kHz carrier waveform which is amplitude-modulated with a 500Hz tone. You can use it to align the intermediate frequency (IF) stages of any AM broadcast or shortwave radio.

1 Jan, 2008

Water Tank Level Meter, Pt.3: The Base Station

Designed to team with up to 10 Water Tank Level Meters, this Base Station lets you monitor water levels from a remote location (eg, inside your home). As a bonus, it also includes an option for electric pump control.

1 Jan, 2008

Serviceman's Log

There nothing like a good cup of espresso coffee. But first, I had to fix the coffee machine - after I'd fixed my notebook computer's DVD drive, that is.

1 Jan, 2008

Vintage Radio - The simple Aristone M1 4-valve mantel receiver

The Aristone M1 is a 4-valve superhet receiver that was sold during the late 1950s & early 1960s. Designed for the budget end of the market, it was typical of the re-badged sets that appeared during that era.

1 Jan, 2008

Circuit Notebook

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.

1 Jan, 2008

Publisher's Letter

Electrical energy will cost more in the future

1 Jan, 2008

Mailbag

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".

1 Jan, 2008

Ask Silicon Chip

Got a technical problem? Can't understand a piece of jargon or some technical principle? Drop us a line and we'll answer your question. Write to: Ask Silicon Chip, PO Box 139, Collaroy Beach, NSW 2097 or send an email to silchip@siliconchip.com.au

Issue 231   View the articles in this issue >>
Restoring a Vintage Television Review: Rohde & Schwarz FS300 & SM300 Test Gear
Voice Recorder Module Infrared Audio Headphone Link For TV

1 Dec, 2007

Restoring a Vintage Television

With Australia celebrating 50 years of television last year, I thought I should celebrate the occasion and restore a TV set that was around not long after it started. But like the hare in Mrs Beaton's cookbook, I first had to catch my set...

1 Dec, 2007

Review: Rohde & Schwarz FS300 & SM300 Test Gear

Mauro Grassi takes an in-depth look at Rohde & Schwarz' new FM300 Spectrum Analyser and SM300 Signal Generator

1 Dec, 2007

Voice Recorder Module

Here's an improved version of the very popular voice recorder design we published in May 2005. It can now be set up easily to record two, four or eight different messages for random-access playback or a single message for 'tape mode' playback. Also, it now provides cleaner and glitch-free line-level audio output suitable for feeding an amplifier or PA system. It can be powered from any source of 9-14V DC.

1 Dec, 2007

Infrared Audio Headphone Link For TV

Do you have trouble understanding what's being said on the TV? Do you need the volume cranked up too loud for everyone else? Do you have a hearing aid as well? If you said yes to any other these questions, here is your answer: an infrared transmitter and receiver to let you listen to the TV sound via headphones. That way, you can listen as loudly as you like, without disturbing anyone else.

1 Dec, 2007

PIC-Based Water Tank Level Meter Pt.2

Last month, we published the circuit of the Water Tank Level Meter and described how it worked. This month, we show you how to build both the basic and telemetry versions and detail the installation.

1 Dec, 2007

Playback Adaptor For CD-ROM Drives; Pt.2

Last month, we published the circuit details of our new CD-ROM Player Adaptor and described its operation. This month, we show you how to build it.

1 Dec, 2007

Signature Series Kit Loudspeaker System

These new speakers are among the very best kit speakers that money can buy. They use the very-high-performance Fountek ribbon tweeters and Peerless woofers. They will be a very good match to our recently described 20W Class-A Stereo Amplifier.

1 Dec, 2007

Product Showcase

1 Dec, 2007

Serviceman's Log

This month, I've got rather a mixed bag, ranging all the way from a car stereo CD player to an Apple iMac monitor and on to widescreen plasma TV sets. It's all in a day's work.

1 Dec, 2007

Vintage Radio

Like many manufacturers, Kriesler built numerous 5-valve, dual-wave receivers with quite good performance. The 11-59 receiver was aimed at the low-priced end of the market but its performance was still quite acceptable, with good reception on the shortwave stations.

1 Dec, 2007

Publisher's Letter

Electric cars are viable right now

1 Dec, 2007

Mailbag

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".

1 Dec, 2007

Circuit Notebook

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.

1 Dec, 2007

Ask Silicon Chip

Got a technical problem? Can't understand a piece of jargon or some technical principle? Drop us a line and we'll answer your question. Write to: Ask Silicon Chip, PO Box 139, Collaroy Beach, NSW 2097 or send an email to silchip@siliconchip.com.au

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