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Silicon Chip September 2014

The September issue of Silicon Chip Electronics Magazine features a high-performance, tiny Class-D Audio Amplifier project, that can deliver up to 10W per channel in Stereo Mode and more than 25W into a single speaker. This amplifier is more than 91% efficient and does not require a heatsink for normal operation. The unit is loaded with features, with selectable gain control, on-board volume control and low-power shutdown. Full protection is integral to the unit, with over-temperature, over-current, short-circuit and speaker protection all built into the unit. The amplifier is based on the high-performance Texas Instruments TDA3113D2 IC with very low distortion and PWM operation. Also this month, build a Opto-Theremin unit, this unit provides a wide range of eerie sounds by just moving your hands around the sensors of the unit. This easy to build project, offers many hours of fun and is great for kids. Finally this month, build a Wideband Active Differential Oscilloscope Probe, this unit is suitable for bandwidths of up to 80Mhz. All projects come complete with circuit diagram and electronic parts list.

This month's features include a look at the old Omega System, this system was based around the world and provided radio navigation information before GPS. Also in this month's features, a review of the Blamey & Saunders Bluetooth Hearing Aid Programmer. Plus all the regular columns, including the Circuit Notebook, Serviceman's Log and Vintage Radio are included, providing stacks of great reading.


Part Code: SILCHIPSEP2014


Features

  • How Omega Ruled the World Before GPS
  • The Sydney Electronex 2013 Show & PCB Design Tips
  • Review: Incus Bluetooth Hearing Aid Programmer

Projects

  • Create Eerie Music with the Opto-Theremin, Part 1
  • A Wideband Active Differential Oscilloscope Probe
  • Mini-D Stereo 10W/Channel Class-D Audio Amplifier
  • An Improved Tweeter Horn for the Majestic Loudspeaker


Great Value at only $7.90