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Contents Vol.37, No.05 May 2024 14 Traffic Management Page 40 Australia is a world leader in computerised traffic management systems, such as variable speed limits, lane direction changes, traffic lights etc. This article explains how they make sure you aren’t stuck in traffic forever! By Dr David Maddison, VK3DSM Computerised systems 56 The 2024 Formula 1 Power Unit Formula 1 (F1) engines are powerhouses despite needing to be very compact. Current F1 engines are hybrid designs that can generate over 750kW from just 1.6 litres of displacement. So how do these engines work? By Brandon Speedie Hybrid engines 96 RTV&H Calibrated Oscilloscope WiFi DDS Function Generator The Formula 1 Power Unit Page 56 This oscilloscope was designed by Jim Rowe and published in the JuneOctober 1963 issues of Radio, TV & Hobbies magazine. It’s a brilliant circuit that needed just one minor adjustment. By Ian Batty Vintage electronics 33 Compact Frequency Divider This project converts a 10MHz frequency reference (such as from an oscilloscope) down to 1MHz or 1Hz square wave signals with a 50Ω or 75Ω output impedance. The 1Hz signal can be used as a 1PPS clock source. By Nicholas Vinen Test equipment project Image Source: Jay Hirano Photography/Shutterstock.com Jaycar Mini Projects 40 WiFi DDS Function Generator, Pt1 This flexible and easy-to-build Function Generator is a staple on test benches. It provides two wide-range, low distortion outputs and can be controlled from its touchscreen or remotely via a WiFi connection. By Richard Palmer Test equipment project 60 Jaycar-sponsored Mini Projects This month’s set of Mini Projects include: a Symbol USB Keyboard for typing special characters; a Thermal Fan Controller; and a Wired Infrared Remote Extender. Each project is designed so that anyone can build it. By Tim Blythman Mini projects 70 Fan Speed Controller Mk2 Our updated, quiet Fan Speed Controller is suited for ceiling, pedestal and box fans (any using a 230V AC shaded-pole motor). It provides full control over the motor speed and is rated up to 80W. By John Clarke Speed controller project 80 Skill Tester 9000, Part 2 This retro game is a fun and educational project based on the “buzz wire” game but with some modern twists. The construction covered here is divided into sections to suit beginners and pros. By Phil Prosser Game project Page 60 2 Editorial Viewpoint 5 Mailbag 55 Subscriptions 86 Serviceman’s Log 92 Circuit Notebook 106 Online Shop 108 Ask Silicon Chip 111 Market Centre 112 Advertising Index 1. DSB/AM phase-shift modulator 2. Replacement supply for BWD scope