Fullscreen HTML5Med Res (??MB)HTML4

Contents SILICON CHIP www.siliconchip.com.au Vol.25, No.2; February 2012 Features 14 Converting The F&P SmartDrive for Use As A . . . Motor Recycled smart drive washing machine motors can be found in wind turbines, water turbines and many other types of generators. Here’s how to use a Fisher & Paykel SmartDrive motor as . . . a motor – by Nenad Stojadinovic 36 DCC: Digital Command Control For Model Railways DCC is becoming increasingly popular. Here’s a quick rundown on how it works – by Leo Simpson 76 Homebrew PCBs Via Toner Transfer A Really Bright 10W LED Floodlight – Page 20. 20. Want to make good-quality PCBs at home? Here’s how to do it using a cheap laminator, a laser printer and a few low-cost materials – by Alex Sum Pro jects To Build 20 A Really Bright 10W LED Floodlight This bright LED floodlight rivals halogens but consumes much less power. It’s compact, efficient and easy to build – by Branko Justic & Ross Tester 24 Crystal DAC: A High-Performance Upgrade This new, high-end DAC board can be installed in our Hifi Stereo DAC project (Sept-Nov 09) without any major changes – by Nicholas Vinen 42 SemTest: A Discrete Semiconductor Test Set; Pt.1 Crystal DAC HighPerformance Upgrade Board – Page 24. Versatile unit can test LEDs, diodes, transistors, Mosfets, SCRs and PUTs for gain (if applicable), voltage breakdown and leakage. You can even test IGBTs and Triacs! – by Jim Rowe 64 Simple 1.2-20V 1.5A Switching Regulator It’s small, efficient and boasts a very low drop-out voltage, little heat generation and electronic shut-down – by Nicholas Vinen Special Columns 58 Serviceman’s Log You’ve got to have a good system in place – by the Serviceman 70 Circuit Notebook (1) Traffic Light Sequencer; (2) Electric Fence Tester; (3) How To Operate Multiple 433MHz UHF Remote Switches; (4) Quadrature Decoder For Motor Feedback; (5) Eye-Level Display For Bathroom Scales; (6) Guitar Practice Amplifier; (7) SudoMate For Sudoku Puzzles; (8) Rapid Fire Dexterity Game SemTest Discrete Semiconductor Test Set – Page 42. 86 Vintage Radio The 1930s Palmavox 5-valve superhet; Pt.1 – by Maurie Findlay Departments   2   4 57 91 Publisher’s Letter Mailbag Product Showcase Summer Showcase siliconchip.com.au 94 Ask Silicon Chip 98 Order Form 103 Market Centre 1.2-20V 1.5A Switching Regulator – Page 64. February 2012  1