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High-Power Reversible DC Motor Speed Controller
07 August 2010
Here's a 12-32V 30A speed controller that's easy to build. It's available in two versions reversible and non-reversible and features soft start, relay switching of motor direction and PWM speed control.
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Circuit Notebook
05 August 2010
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.
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Dual-Tracking ±19V Power Supply, Pt.2
22 July 2010
Last month, we introduced our new Dual Tracking ±19V Power Supply and explained how it works. This month, we show you how to build the PC boards, install them in a case, wire it up and get it going. Both the mains-powered and plugpack-powered versions are covered.
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Lab-Standard 16-Bit Digital Potentiometer
18 July 2010
No, this is not some kind of fancy digital volume control for hifi systems. Instead, it's a low-cost digital programmable voltage divider. It's used to provide an accurate adjustable output from a precision voltage reference for meter calibration and other tasks.
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Programming PIC Controllers: How It's Done
12 July 2010
Many SILICON CHIP projects include a PIC microcontroller as the central component. But how do you program the PIC if you're not buying a kit or if you want to upgrade the firmware to a later version? Here's a step-by-step guide to doing it yourself.
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PICAXE Project Development System
10 July 2010
With the abundance of microprocessor/microcontroller variations available these days it is no small wonder that many of the designs produced by electronic enthusiasts use one type or another of these components. And most commercial equipment these days has a micro controlling it. But how do you get from an idea to a working design?
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3DTV: From Stadium To Living Room
08 July 2010
On Wednesday, 19th May 2010, Nine Network Australia and SBS Corporation began the first free-to-air 3D television broadcast in the world.
We take a look at the technology involved in getting 3DTV live from the sports field to your home.
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An Intelligent 12V Fan Controller
04 July 2010
Does your computer make more noise than it should? It's probably mostly fan noise! Slowing the fans down will reduce the noise but if you go too far, you could end up with fricassee of CPU!
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Circuit Notebook
02 July 2010
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.
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