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This is only a preview of the August 2011 issue of Silicon Chip. You can view 33 of the 104 pages in the full issue, including the advertisments. For full access, purchase the issue for $10.00 or subscribe for access to the latest issues. Items relevant to "An Electronic Stethoscope":
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Items relevant to "Ultra-LD Mk.3 200W Amplifier Module, Pt.2":
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Contents
SILICON
CHIP
www.siliconchip.com.au
Vol.24, No.8; August 2011
Features
14 Asus EeePad “Transformer” Tablet PC
It looks and works pretty much like a standard tablet computer but plug in the
keyboard and it transforms into a powerful little netbook. We recently got our
hands on one to find out what all the excitement was about – by Ross Tester
32 Safely Removing Solder Fumes & Other Pollutants
Solder fumes can be a real problem but not with Hakko’s FA-430 fume
extractor. It really is a clever not-so-little sucker! – by Ross Tester
Asus EeePad “Transformer”
Tablet PC – Page 14.
86 Review: UP! Portable 3D Printer
Want to make plastic prototypes or scale models at home or in the office?
Here’s a 3D printer that’s affordable for most businesses – by Nicholas Vinen
Pro jects To Build
21 An Electronic Stethoscope
Want to make sure your heart is still beating? Or sort out unusual rattles in
your car’s engine? This electronic stethoscope has switchable frequency bands
& you can listen via headphones or a loudspeaker – by John Clarke
34 Build A Digital Spirit Level
This project is really on the level. It’s the electronic version of the traditional
spirit level & can measure the angle of any flat surface from 0-360° in 0.1°
increments. It’s rugged & easy to build too – by Andrew Levido
62 Ultra-LD Mk.3 200W Amplifier Module, Pt.2
An Electronic Stethoscope
– Page 21.
The Ultra-LD Mk.3 is by far our lowest distortion Class-AB amplifier design.
Here’s how to build it and some more performance data – by Nicholas Vinen
76 Rudder Position Indicator For Power Boats, Pt.2
Second article has detailed instructions for building and testing both the sensor
and display units. We also describe how it’s installed in a large power boat – by
Nicholas Vinen
Digital Spirit
Level – Page 34.
Special Columns
44 Serviceman’s Log
Who pays when it dies on the bench? – by the Serviceman
57 Circuit Notebook
(1) Maximite Stepper Motor Interface (2) Solar Tracking With a Standard Motor
Speed Controller; (3) Audio Impedance Meter Operates At 1kHz; (4) Stereo
Headphone Adaptor For LCD & Plasma TVs; (5) Shunt Regulator For LeadAcid Battery Float Charging
92 Vintage Radio
Hotpoint Bandmaster J35DE console radio, Pt.2 – by Maurie Findlay
Departments
2
4
91
98
Publisher’s Letter
Mailbag
Product Showcase
Ask Silicon Chip
siliconchip.com.au
101 Notes & Errata
102 Order Form
103 Market Centre
Building The Ultra-LD Mk.3
Amplifier Module – Page 62.
August 2011 1
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