Fullscreen HTML5Med Res (??MB)HTML4

Notes & Errata ASCII Video Terminal for the Micromite (July 2014): version 1.3 of the firmware has been released. This fixes two bugs, including one which caused USB data corruption in PAL composite video mode. Escape commands have also been added to turn the cursor on and off (see accompanying PDF file). The new firmware is available from both Geoff Graham’s website (www.geoffg. net) and the SILICON CHIP website. It can be loaded onto units which have already been built using the USB bootloader via a Windows PC. Programmed chips supplied for this project will use this new firmware. 6-Digit Nixie Clock, Mk2 (February & March 2015): the daylight savings calculations were wrong for some locations and this resulted in daylight savings time being used year-round. A revised version of the firmware, coil is charged with current ready for firing. The voltage on the coil primary is very similar at around 300V to 360V whether CDI or inductive ignition, so that isn’t a problem. More information is available at www.worldphaco.net and www. worldphaco.net/uploads/CAPACITIVE_DISCHARGE_IGNITION_vs_ MAGNETIC _ DISCHARGE _ IGNITION..pdf How much power from Class-D amplifier? If I power the two High Power ClassD amplifier modules (SILICON CHIP, November & December 2012) from a Advertising Index 1910215C.hex, is available which fixes this. Future clocks kits will be supplied with the new firmware. Users affected by this bug can set the manual time-zone override so that the unit shows the correct time or mail their PIC32 chip to our PO Box along with a return address for re-programming (be sure to note that the chip is for the Nixie Clock). In addition, care is required when fitting LED1 and the super-capacitor. The IR LED supplied may have its flat side towards the anode, not the cathode (as is usually the case and as shown in Fig.4). Check by referring to the longer of its two leads, which will be the anode. Also, as stated in the text, be sure to orientate the super-capacitor according to its polarity marking. Do not rely on the depiction in Fig.4 which may not be accurate for all super capacitors. Next Issue The August 2015 issue of SILICON CHIP is due on sale in newsagents by Thursday 30th July. Expect postal delivery of subscription copies in Australia between July 27th and August 7th. Altronics.................................. 66-69 Aust. Exhibitions & Events............ 10 Control Devices Group................... 3 Emona Instruments...................... 13 Front Panel Express....................... 8 Hare & Forbes.......................... OBC Icom Australia.............................. 11 Jaycar .............................. IFC,45-52 KCS Trade Pty Ltd.......................... 7 Keith Rippon ................................ 95 LD Electronics.............................. 95 LEDsales...................................... 95 Master Instruments...................... 95 Microchip Technology..................... 9 Mikroelektronika......................... IBC Ocean Controls............................ 23 Oatley Electronics........................ 39 Questronix.................................... 95 Radio, TV & Hobbies DVD............ 65 Sesame Electronics..................... 95 Silicon Chip Online Shop........ 88-89 Silicon Chip Subscriptions........... 19 Silvertone Electronics.................... 5 300VA 30V + 30V transformer, what power output could I expect? (B. V., via email). •  Continuous power from each channel would be less than 150W into 4-ohm loudspeakers. For 8-ohm speakers, you could expect about 90W per Tronixlabs..................................... 95 Worldwide Elect. Components..... 95 channel. For normal program signals, you could expect up to 180W from SC each channel into 4-ohm loads. WARNING! SILICON CHIP magazine regularly describes projects which employ a mains power supply or produce high voltage. All such projects should be considered dangerous or even lethal if not used safely. Readers are warned that high voltage wiring should be carried out according to the instructions in the articles. When working on these projects use extreme care to ensure that you do not accidentally come into contact with mains AC voltages or high voltage DC. If you are not confident about working with projects employing mains voltages or other high voltages, you are advised not to attempt work on them. Silicon Chip Publications Pty Ltd disclaims any liability for damages should anyone be killed or injured while working on a project or circuit described in any issue of SILICON CHIP magazine. Devices or circuits described in SILICON CHIP may be covered by patents. SILICON CHIP disclaims any liability for the infringement of such patents by the manufacturing or selling of any such equipment. SILICON CHIP also disclaims any liability for projects which are used in such a way as to infringe relevant government regulations and by-laws. Advertisers are warned that they are responsible for the content of all advertisements and that they must conform to the Competition & Consumer Act 2010 or as subsequently amended and to any governmental regulations which are applicable. 96  Silicon Chip siliconchip.com.au