Silicon ChipUltra-LD Mk.2 Amplifier Module / Touch-Screen Boat Computer With GPS - June 2016 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Small nuclear power stations are ideal for Australia
  4. Feature: Small Nuclear Reactors: Reliable Power At Low Risk by Dr David Maddison
  5. Feature: Bringing An HP ProBook Laptop Back From The Dead by Greg Swain
  6. Project: Stereo Audio Level/VU Meter: Add Bling To HiFi System by Nicholas Vinen
  7. Project: Arduino-Based Cooling System Monitor by Nicholas Vinen
  8. Serviceman's Log: Putting the wind up an anemometer by Dave Thompson
  9. Project: Hotel Safe Alarm For Travellers by John Clarke
  10. Review: Tecsun PL365 Radio Receiver by Andrew Mason
  11. Project: Budget Senator 2-Way Loudspeaker System, Pt.2 by Allan Linton-Smith
  12. PartShop
  13. Review: Rohde & Schwarz RTH1004 Scope Rider by Nicholas Vinen
  14. Vintage Radio: AWA 461 MA clock radio & Heathkit RF signal generator by Terry Gray
  15. Subscriptions
  16. Product Showcase
  17. PartShop
  18. Market Centre
  19. Notes & Errata: Ultra-LD Mk.2 Amplifier Module / Touch-Screen Boat Computer With GPS

This is only a preview of the June 2016 issue of Silicon Chip.

You can view 42 of the 104 pages in the full issue, including the advertisments.

For full access, purchase the issue for $10.00 or subscribe for access to the latest issues.

Items relevant to "Stereo Audio Level/VU Meter: Add Bling To HiFi System":
  • Stereo LED Audio Level Meter / VU Meter PCB [01104161] (AUD $15.00)
  • PIC32MX150F128D-I/PT programmed for the Stereo LED Audio Level Meter / VU Meter [0110416A.HEX] (Programmed Microcontroller, AUD $15.00)
  • Strip of ten ultra-bright YELLOW M3216/1206 SMD LEDs (Component, AUD $0.70)
  • Strip of ten ultra-bright AMBER M3216/1206 SMD LEDs (Component, AUD $0.70)
  • Strip of ten ultra-bright BLUE M3216/1206 SMD LEDs (Component, AUD $0.70)
  • Strip of ten ultra-bright GREEN M3216/1206 SMD LEDs (Component, AUD $0.70)
  • Strip of ten ultra-bright RED M3216/1206 SMD LEDs (Component, AUD $0.70)
  • Red & White PCB-mounting RCA sockets (Component, AUD $4.00)
  • SMD components for the 100dB Stereo Audio Level Meter/VU Meter (AUD $35.00)
  • Stereo LED Audio Level Meter / VU Meter clear acrylic case pieces (PCB, AUD $15.00)
  • Firmware (C and HEX) files for the Stereo LED Audio Level Meter / VU Meter [0110416A.HEX] (Software, Free)
  • Stereo LED Audio Level Meter / VU Meter PCB pattern (PDF download) [01104161] (Free)
  • Laser cutting artwork and drilling diagram for the Stereo LED Audio Level Meter / VU Meter (PDF download) (Panel Artwork, Free)
Articles in this series:
  • Stereo Audio Level/VU Meter: Add Bling To HiFi System (June 2016)
  • Stereo LED Audio Level/VU Meter, Pt.2 (July 2016)
Items relevant to "Arduino-Based Cooling System Monitor":
  • Arduino sketch for the Cooling System Monitor (Software, Free)
  • Laser cutting artwork for the Arduino-Based Cooling System Monitor (PDF download) (Panel Artwork, Free)
Items relevant to "Hotel Safe Alarm For Travellers":
  • Hotel Safe Alarm PCB [03106161] (AUD $5.00)
  • PIC12F675-I/P programmed for the Hotel Safe Alarm [0310616A.HEX] (Programmed Microcontroller, AUD $10.00)
  • Firmware (ASM and HEX) files for the Hotel Safe Alarm [0310616A.HEX] (Software, Free)
  • Hotel Safe Alarm PCB pattern (PDF download) [03106161] (Free)
  • Hotel Safe Alarm lid panel artwork and drilling template (PDF download) (Free)
Items relevant to "Budget Senator 2-Way Loudspeaker System, Pt.2":
  • 2-Way Passive Crossover PCB [01205141] (AUD $20.00)
  • Acrylic pieces to make two inductor bobbins (Component, AUD $7.50)
  • 2-Way Passive Loudspeaker Crossover PCB pattern (PDF download) [01205141] (Free)
Articles in this series:
  • Budget Senator 2-Way Loudspeaker System (May 2016)
  • Budget Senator 2-Way Loudspeaker System, Pt.2 (June 2016)

Purchase a printed copy of this issue for $10.00.

Notes & Errata Ultra-LD Mk.2 Amplifier Module, August & September 2008: in the printed version of the magazine, on page 71, the panel “Bullet-Proofing The Ultra-LD Mk.2” reads “Fortunately, this was relatively simple and involved adding a 22kΩ collector current-limiting resistor to Q9 (ie, this resistor is connected between Q9’s collector and ground).” This statement is incorrect. The resistor is, in fact, added between Q8’s collector and ground to limit the current through Q9, as shown in Fig.18 on page 70 of the same issue. Note that the panel has been removed from the on-line version as the circuit diagram in the August 2008 issue on the website already incorporates the changes mentioned in the print edition. Ask SILICON CHIP . . . continued from page 103 JBL Super Bullet Tweeters go down to around 3.5kHz (model 2402). The cabinets are still under construction. I have a 60W/channel class-A Amcron Power Line 3 stereo amplifier to drive the woofers. I also have a Cary Sixpac 50W/channel amplifier to drive the mid-range loudspeakers. It uses six EL34 tubes and is a Class-A monoblock. I intend to get a 12W/channel tube amplifier to drive the tweeters. Can you help? (F. J., via email.) • Since you are using separate amplifiers for each driver, you will need to use an active 3-way crossover. We can’t advise you on the exact design since we don’t have the details of the enclosure, the efficiencies of the vari- Advertising Index Touch-Screen Boat Computer With GPS, April 2016: version 3 (V3) software is now available for this project, with the following improvements: (1) Fixed a problem which may cause the BASIC program to repeatedly crash and restart if a point of interest (POI) is created with longitude and latitude set to 0° (the default). (2) Now allows over 50 points of interest (POI) to be created. In the main selection screen, you now use the PREV and NEXT buttons to take you through the list of POIs. (3) The heading indicator and POI direction indicator are now suppressed when the boat is stationary. (4) Improved rendering for the heading needle. (5) Removed the slash from the zero character in one of the fonts. ous drivers and the required cross­ over slopes (eg, 6dB/octave, 12dB/ octave etc). However, we did publish a 3-way active crossover design in the January 2003 issue which you may be able to adapt for your purposes. We can suggest our Currawong valve amplifier to drive the tweeters (October 2014 to March 2015): www.siliconchip. com.au/Issue/2014/October/Currawong+Stereo+Valve+Amplifier%3A SC +A+Preview Next Issue The July 2016 issue of is due on sale in newsagents by Thursday 23rd June. Expect postal delivery of subscription copies in Australia between June 23rd and July 7th. Allan Warren Electronics............ 103 Altronics.........................loose insert AV-Comm Pty Ltd........................... 7 Digi-Key Electronics.................. 3,25 DSCAPE.................................... 103 Emona Instruments.................... IBC Glyn Ltd NZ.................................. 14 Hammond Manufacturing............... 6 Hare & Forbes.......................... OBC High Profile Communications..... 103 Icom Australia.............................. 15 Jaycar .............................. IFC,49-56 Keith Rippon Kit Assembly ........ 103 LD Electronics............................ 103 LEDsales.................................... 103 Master Instruments........................ 9 Microchip Technology................... 17 Minitech Engineering................... 59 Mouser Electronics......................... 5 Ocean Controls............................ 16 Philips Monitors............................ 13 Rockby Electronics....................... 63 Rohde & Schwarz........................ 11 Sesame Electronics................... 103 SC Radio & Hobbies DVD............ 97 SC Online Shop............... 78-79,101 Silicon Chip Subscriptions........... 94 Silicon Chip Wallchart.................. 99 Silvertone Electronics.................... 8 Tronixlabs.............................. 10,103 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. 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