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Contents SILICON CHIP www.siliconchip.com.au Vol.26, No.4; April 2013 Features 12 How To Get Digital TV On Your Laptop Or PC Do you want to catch up with TV programs while you work but don’t have the space for a TV in your office? All you need is a cheap USB DVB-T dongle on your PC or laptop. Here’s how to get it going – by Jim Rowe 20 The New SILICON CHIP Website SILICON CHIP has a brand new website with a flip-page magazine and an online shop. Here’s a rundown of its main features – by Nicholas Vinen LED Ladybird: Any Eye-Catching Electronic Beetle – Page 26 81 Siglent SDG1050 50MHz 2-Channel Function Generator This arbitrary signal generator has outputs for two independent waveforms, including sine, square, triangle, pulse and lots more, at frequencies up to 50MHz. It can also be used as a frequency counter – by Nicholas Vinen Pro jects To Build 26 LED Ladybird: An Eye-Catching Electronic Beetle Be the light of the party with this fascinating electronic brooch. It uses highbrightness LEDs for its eyes, wings and abdomen and it flashes these in a fetching moving pattern – by John Clarke 36 High-Performance CLASSiC DAC; Pt.3 Third article in the series has the full PCB and final assembly details of our new high-performance DAC – by Nicholas Vinen 60 Deluxe GPS 1pps Timebase For Frequency Counters Building The High-Performance CLASSiC DAC – Page 36. Simple design provides GPS-based 1pps pulses for a counter timebase. It also extracts the NMEA 0183 data stream from the GPS satellites for processing on a PC using free software downloaded from the internet – by Jim Rowe 74 A Rugged 10A Battery Charger From Bits & Pieces What do you do when you have stuff left over from another project? You think of uses for it, of course! Here we use some surplus halogen down-light transformers to make a simple car battery charger – by Ross Tester Special Columns 31 Circuit Notebook (1) Splash Of Colour For The Regular Maximite; (2) FM Bug Detector Uses A 7555 As A Comparator; (3) Serial Data Transmission Over VGA; (4) Dimmer For Christmas Light LED Strings Deluxe GPS 1pps Timebase For Frequency Counters – Page 60. 54 Serviceman’s Log Curly jobs: you have to be on guard 84 Vintage Radio The First “Trannie” – The Regency TR-1 4-transistor radio Departments   2 Publisher’s Letter   4 Mailbag 25 Subscriptions 34 Partshop & Order Form siliconchip.com.au 53 Product Showcase 90 Ask Silicon Chip 95 Market Centre A Rugged 10A Battery Charger From Bits & Pieces – Page 74. April pril 2013  1 2013  1 A