Silicon Chip February 2013

In this issue of Silicon Chip Magazine, build a High-Performance Stereo Digital-to-Analog Converter. These units are ideal to convert your MP3 or digital music to high quality stereo for your headphones or input to your sound system. This unit is based on the Cirrus Logic CS4398, as used in Marantz and other high-fidelity sound equipment. It has three TOSLINK inputs, three S/PDIF inputs and a USB audio input. A SD card socket is also included. The unit also incorporates a headphone amplifier and an optional infrared remove control.

Also this month, build your own Seismograph, this easy to build unit is based on the PICAXE microcontroller and includes computer software to display the various tremors and jolts, similar to an expensive top of the range chart recorder. This month, also includes a Mobile Phone Loud Ringer, this unit is great for when you are working outdoors or in a very noisy environment. The unit sensors the vibration of your phone and then drives a large piezo siren, to ensure you won't miss a call. Finally this month, build an Improved Jacob's Ladder, and watch the high voltage sparks climb up the vertical wires to give a very eye-catching display. All projects come complete with circuit diagram and electronic parts list.

This month’s articles include a look at the new LED Halogen down-lights available. These high efficiency LEDs can provide improved lighting at reduced cost over conventional halogen lights. Also a review of the new HB Wireless XR-450M UHF Handheld Transceiver. Plus all the regular articles, including the Circuit Notebook, Serviceman’s Log and Vintage Radio section.

Part Code: SILCHIPFEB2013

Features

• Replace Your Halogen Down-Lights with LED's
• The Historic Rubicon Hydroelectric Scheme
• Review: The XR-450M UHF Handheld Transceiver

Projects

• High Performance CLASSiC DAC, Part 1
• Seismograph with Tsunami Alarm
• Mobile Phone Loud Ringer
• Improved Jacob's Ladder
• Accurate GPS 1pps Timebase for Frequency Counters

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