Fullscreen HTML5Med Res (??MB)HTML4

Contents Vol.36, No.05 May 2023 20 Avalon Airshow 2023 The biennial Australian International Airshow (hosted in Geelong, Victoria) is one of the world’s top airshows. It showcases amazing new technology from industrial to defence projects. This year it had a flying car! By Dr David Maddison Technology feature 43 UVM-30A UV Light Sensor The UVM-30A ultraviolet (UV) light-sensing ‘breakout’ module detects the intensity of UV solar radiation. When connected to an Arduino, or similar, it can be used to determine the current ‘UV index’. By Jim Rowe Using electronics modules 48 ElectroneX 2023 Electronex is in Melbourne this year, hosted in the Melbourne Convention and Exhibition Centre on the 10-11th of May. Electronex is an important way for companies to show off their products and services in the sphere of electronics design, assembly, manufacture and service in Australia. By Australasian Exhibitions & Events Exhibition outline 32 Dual RF Amplifier The Dual RF Amplifier has two outputs with individually adjusted gains, making it perfect for providing a higher output level on a signal generator. It can also provide better drive strength, or ‘fan out’ to other equipment. By Charles Kosina Test equipment project 62 GPS-Disciplined Oscillator This new GPS-Discipline Oscillator (GPSDO) requires very few discrete components as it is built almost entirely in software. It provides an extremely accurate 10MHz signal with an error in the parts per billion range. By Alan Cashin Test equipment project ElectroneX 2023 Page 48 Page 32 Dual RF Amplifier for Signal generators Page 62 GPS Disciplined Oscillator WIDEBAND Fuel Mixture Display Page 73 2 Editorial Viewpoint 5 Mailbag 72 Subscriptions 87 Circuit Notebook 90 Serviceman’s Log 73 Wideband Fuel Mixture Display, Pt2 The Wideband Fuel Mixture Display (WFMD) uses a Bosch LSU4.9 wideband sensor to show a running engine’s air:fuel ratio and lambda. In the second installment of this series, we cover how the WFMD works by describing the operation of its circuit in detail. By John Clarke Automotive project 80 Songbird This ‘Songbird’ is quick and easy to build, with a simple circuit, so it is perfect for beginners and even more experienced constructors. It sports an aptly designed PCB, and once completed, will burst into song. It is powered via two AA cells and ‘sings’ via a piezo speaker. By Andrew Woodfield Musical toy project 1. A more flexible Flexitimer 2. Jaycar TS1440 soldering stand adaptor 3. Emergency light using tool batteries 4. Raspberry Pi Pico multi-processor stack 100 Vintage Radio 106 Online Shop 108 Ask Silicon Chip 111 Market Centre 112 Advertising Index 112 Notes & Errata Astor APN transistor radio by Ian Batty