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MARKET CENTRE Cash in your surplus gear. Advertise it here in SILICON CHIP C O N T R O L S Tough times Battery Packs & Chargers ELNEC IC PROGRAMMERS High quality Realistic prices Free software updates Large range of adaptors Windows 95/98/Me/NT/2k/XP demand innovative solutions! CLEVERSCOPE USB OSCILLOSCOPES Siomar Battery Engineering www.batterybook.com Phone (08) 9302 5444 Made in Australia, used by OEMs world-wide splat-sc.com IMAGECRAFT C COMPILERS FOR SALE SOLAR PANELS LOW COST: Full range 5W to 250W – eg, 190W/24V $195, 200W/12V $249, 250W/24V $249. (03) 9470 5851. chris<at>lowenergydevelopments.com.au www.lowenergydevelopments.com.au 544 High St, Preston 3072 Melbourne. PCBs MADE, ONE OR MANY. Any format, hobbyists welcome. Sesame Electronics Phone (02) 8068 2713. sesame<at>sesame.com.au www.sesame.com.au LEDs! Nichia, Cree and other brand name LEDs at excellent prices. LED drivers, including ultra-reliable linear driver options. Many other interesting and hard-to-find electronic items! www.ledsales.com.au questronix.com.au – audiovisual experts solve home, corporate security and devotional installation & editing woes. QuestAV CYP, Kramer TVone (02) 4343 1970 or sales<at>questronix. com.au PCBs & Micros: Silicon Chip Pub­ lications can supply PCBs and programmed micros for recent (and some not so recent) projects described in the magazine. Phone (02) 9939 3295 or email silicon<at>siliconchip.com.au WANTED CUSTOMERS WANTED: Truscotts Electronic World – large range of semiconductors and passive components for industry, hobbyist and amateur projects including Drew Diamond. 27 The Mall, South Croydon, Melbourne. Phone (03) 9723 3860. www.electronicworld. com.au KIT ASSEMBLY & REPAIR KEITH RIPPON KIT ASSEMBLY & REPAIR: * Australia & New Zealand; * Small production runs. Phone Keith 0409 662 794. keith.rippon<at>gmail.com ADVERTISING IN MARKET CENTRE Classified Ad Rates: $29.50 (incl. GST) for up to 20 words plus 85 cents for each additional word. Display ads: $54.50 (incl. GST) per column centimetre (max. 10cm). Closing date: 5 weeks prior to month of sale. To book, email the text to silicon<at>siliconchip.com.au and include your name, address & credit card details, or fax (02) 9939 2648, or phone (02) 9939 3295. siliconchip.com.au 2 x 100MSa/s 10bit inputs + trigger 100MHz bandwidth 8 x digital inputs 4M samples/input Sig-gen + spectrum analyser Windows 98/Me/NT/2k/XP ANSI C compilers, Windows IDE AVR, TMS430, ARM7/ARM9 68HC08, 68HC11, 68HC12 GRANTRONICS PTY LTD www.grantronics.com.au Issues Getting Dog-Eared? Keep your copies safe with these handy binders REAL VALUE AT $14.95 PLUS P & P Price: $A14.95 plus $10.00 p&p per order (includes GST). Buy five & get them postage free! Available only in Aust. Silicon Chip Publications, PO Box 139, Collaroy Beach 2097 Fill in and mail the handy order form in this issue; or fax (02) 9939 2648; or phone (02) 9939 3295 and quote your credit card number. October 2012  103 Advertising Index Altronics.........................loose insert Dyne Industries............................ 11 EAV Technology........................... 44 Element14...................................... 7 Emona Instruments...................... 47 Gooligum Electronics................... 99 Grantronics................................. 103 Harbuch Electronics..................... 73 Ask SILICON CHIP . . . continued from p101 240VAC charger at work or misplace it. Obviously a unit like this could be used with any mobile phone as the car charger lead is the only special component needed, which every mobile phone user probably already has. A plugpack type unit like this is available in England. Car cigarette lighter sockets are only “ live “ with the key in the ignition in the accessories position which I don’t like to do. (B. G., via email). • That seems like an odd request. After all, 240VAC phone chargers are very cheap and compact. Why go to the bother of making a dedicated 13.8V supply with a cigarette socket just so you can plug in your DC charger? LED problem in Remote Control Extender I purchased the kit for the Infrared Remote Controller (S ILICON C HIP , June 2006) from Jaycar Electronics. I appreciate that their warranty only extends to parts but having carefully assembled it, the circuit does not work and I conclude that either a component has failed or the design is faulty. I have powered the circuit with 9V DC. The voltage across is ZD1 is about 5.1V. The acknowledge LED does not flash when an IR remote control is used. I have tried it with Samsung, Panasonic and Sky Remotes but to no avail. It looks to me that the input sensing circuit is not working. I would appreciate your advice as to how I should proceed. (D. S., via email). • It is likely that LED1 has been in104  Silicon Chip Hare & Forbes.............................. 83 DOWNLOAD OUR CATALOG at www.iinet.net.au/~worcom WORLDWIDE ELECTRONIC COMPONENTS PO Box 631, Hillarys, WA 6923 Ph: (08) 9307 7305 Fax: (08) 9307 7309 Email: worcom<at>iinet.net.au Instant PCBs.............................. 103 Jaycar .............................. IFC,49-56 Keith Rippon............................... 103 Kitstop.......................................... 10 LED Sales.................................. 103 CIRCUIT IDEAS WANTED: we pay up to $60 for Circuit Notebook items or you could win a $150 gift voucher from Hare & Forbes. Silicon Chip Publications, PO Box 139, Collaroy 2097. stalled with incorrect polarity. The flat of the LED should not be facing IC1. In order for the circuit to work, trimpot VR1 must be adjusted for the correct carrier frequency as described in the testing section. In addition, the IRLED (LED2) must be wired to CON1 SC with the correct polarity. Notes & Errata Induction Motor Centrifugal Switch Over-ride, Circuit Notebook, September 2012: there is an error with this circuit. When changing motor speeds, the run LED (in the controller) flickers and in some cases retriggers the 555 (IC1). To fix this, the 10nF capacitor across the 10MΩ resistor should be changed to a 4.7μF electrolytic and connected via a 1N4148 series diode to pin 10 of the PIC (anode to pin 10). The positive side of the electrolytic goes to the cathode. Also when using this circuit, it is best not to set the motor speed below about 25% as the LED can go out completely and retrigger the 555. Low Energy Developments........ 103 Microchip Technology..................... 5 Mikroelektronika........................... 21 Mouser Electronics................... OBC National Instruments...................... 3 Ocean Controls............................ 77 Quest Electronics....................... 103 Radio, TV & Hobbies DVD............ 73 RF Modules................................ 104 Sesame Electronics................... 103 Silicon Chip Binders................... 103 Silicon Chip Bookshop............... 102 Silicon Chip Order Form............... 97 Silicon Chip Partshop................... 96 Silicon Chip Subscriptions........... 87 Siomar Battery Engineering....... IBC Soltronico..................................... 10 Splat Controls............................. 103 Trio Smartcal................................ 95 Truscotts Electronic World.......... 103 Vicom Pty Ltd............................... 43 Wiltronics..................................... 8,9 Worldwide Elect. Components... 104 siliconchip.com.au