Fullscreen HTML5Med Res (??MB)HTML4

Vol.6, No.11; November 1993 FEATURES FEATURES   4 Electronic Engine Management, Pt.2 by Julian Edgar Airflow measurement THIS JUMBO CLOCK uses giantsized (70mm-high) LED displays & has battery backup, AM/PM indication & automatic display dimming at night. Find out how it works & how to build it by turning to page 16.   8 Review: Tektronix TDS 544A Colour Oscilloscope by L. Simpson Four channels & a sampling rate of 1 gigasample/sec 53 The World Solar Challenge by Brian Woodward Technology & the latest solar-powered racers 72 Review: Epson’s Stylus 800 InkJet Printer by Darren Yates Seven resident fonts plus 360dpi graphics capability 80 Review: The Autoplex Unimeter by Darren Yates Multi-function instrument interfaces to a PC PROJECTS PROJECTS TO TO BUILD BUILD BOASTING AN EFFICIENCY of better than 80%, this inverter circuit is designed to operate either 18/20W or 36/40W fluorescent tubes from a 12V battery. Construction starts on page 26. 16 Build A Jumbo Digital Clock by Darren Yates New clock has giant-sized LED displays 26 High Efficiency Inverter For Fluorescent Tubes by John Clarke Use it for camping, emergency lighting or in a solar installation 56 Stereo Preamplifier With Remote Control, Pt.3 by John Clarke All the construction details 64 Build a Siren Sound Generator by Bernie Gilchrist Simple circuit generates police, fire engine & ambulance sounds SPECIAL SPECIAL COLUMNS COLUMNS 34 Serviceman’s Log by the TV Serviceman Keeping within the customer’s budget THIS SIMPLE PROJECT uses just one IC & a couple of transistors to generate three siren sounds: police, fire engine & ambulance. It is powered from a single 1.5V cell & is ideal for games & models – see page 64. 42 Remote Control by Bob Young Preventing damage to RC transmitters & receivers 70 Computer Bits by Darren Yates More experiments for your games card 82 Vintage Radio by John Hill The vexed question of originality DEPARTMENTS DEPARTMENTS   2   3 40 69 86 Publisher’s Letter Mailbag Circuit Notebook Order Form Product Showcase 90 92 95 96 Back Issues Ask Silicon Chip Market Centre Advertising Index AIRFLOW MEASUREMENT is an important function in electronic engine measurement. In Pt.2 of our series this month, we discuss the various types of airflow sensors – details page 4. November 1993  1