Archivo Descargado desde las WEBS
http://www.enigmaelectronica.tk
Http://www.enigma.phpnet.us
By enigmaelectronica > 01 $7.00 CANADA $5.50 74470 89295 03 U.S.
Cover.qxd 12/11/2008 1:25 PM Page 1 Page 1:25 PM 12/11/2008 Cover.qxd Vol. 30 No. 1 NUTS & VOLTS PROTO BUDDY • SPICE SIMULATION • MOSFETS • How To - SMT SOLDERING January 2009 Jan 09.qxd 12/10/2008 6:02 PM Page 6
January 2009 www.nutsvolts.com C o n t e n t s Features 50 Power MOSFETs ■ By Gerard Fonte Part 1 will cover the theory behind these useful devices that have a lot of overlooked features.
54 A Touch of Spice ■ By Peter Stonard This month, make discoveries about IC circuits that are well-known and learn more about the concepts of sub-circuits and macromodels.
60 How To: Surface Mount Soldering ■ By Robert Doerr Get over your fear of working with these tiny components. Page 44 Page 40 Projects Columns 34 Instrumentation for Model Rocketry Incorporate additional instrumentation to a flight recorder 12 TechKnowledgey 2009 to measure a rocket’s rate of roll, relative altitude, and Events, Advances, and News booster-stage separation detection. ■ By Michael Bessant Topics covered include reconnecting brain ●●●● Advanced Level cells, a new unified storage appliance, don’t mix headphones and pacemakers, plus more. 40 16x16 Tri-Colored LED Matrix — 15 Personal Robotics Real Time Clock for the Parallax SX52 Understanding, Designing & Constructing This project allows the user to create their own scrolling Robots display to show the time (or other messages) in multiple Robo resolutions for 2009. colors. ■ By Timothy Gilmore ●●●● Advanced Level 18 Stamp Applications Putting the Spotlight on BASIC Stamp 44 The Proto Buddy Projects, Hints & Tips Control from the couch — redux. Take proto circuit building to the next level with this device that allows you to expand your existing board so you can create all kinds of circuits. ■ By Jim Stewart 26 Q & A ●●●● Reader Questions Answered Here Intermediate Level High impedance preamp, audio to LED display driver, FM shutdown problem, more. Departments 68 Getting Started With PICs 08 DEVELOPING 86 NV WEBSTORE The Latest in Programming Microcontrollers 2 PERSPECTIVES 90 CLASSIFIEDS I C communication. 31 NEW PRODUCTS 92 TECH FORUM 32 SHOWCASE 96 AD INDEX 72 The Design Cycle Advanced Techniques for Design Engineers 66 ELECTRO-NET Chatting up a thumbdrive.
Nuts & Volts (ISSN 1528-9885/CDN Pub Agree #40702530) is published monthly for $24.95 per year by T & L Publications, Inc., 430 Princeland Court, Corona, CA 92879. PERIODICALS 80 Smiley’s Workshop POSTAGE PAID AT CORONA, CA AND AT ADDITIONAL MAILING OFFICES. POST- An AVR C Programming Series MASTER: Send address changes to Nuts & Volts, P.O. Box 15277, North Hollywood, CA 91615 or Station A, P.O. Box 54,Windsor ON N9A 6J5; [email protected]. A menu navigator. 6 January 2009 DevPerspectives.qxd 12/11/2008 2:13 PM Page 8 DEVELOPING by Bryan Bergeron, Editor PERSPECTIVES Building a Home Recording Studio consideration, as is available space. A popular, low-cost option ($350 and up) is a studio ant to test the extent of your knowledge of applied in a box. This is an all-in-one, stand-alone recording Welectronics? Then try designing a home recording appliance, such as the 64-track Boss BR-600 Digital studio. Thanks to the affordable music recording and Recorder, with built-in microphone, drum machine, and playback devices you can have fun creating your own signal processing effects. A laptop or desktop computer music. Moreover — from an electronics enthusiast’s with an analog-to-digital interface for capturing sound and perspective — a home recording studio is a place where associated software, as well as microphones and preamps, you can apply your creativity. However, designing and is a modest cost solution. A computer offers more then getting the most out of a home recording studio flexibility and room for growth than a studio in a box. requires a considerable understanding of electronics, from power supplies and digital signal processing to acoustics. Power I’ve learned — the hard way — that the first thing to Options be aware of is the seemingly odd standards of the music Various options available for creating a home industry. For example, the power supply polarity used by recording studio range from a pocket digital recorder effects pedals and other audio peripherals is often and built-in microphone in your bedroom to a dedicated, ‘reversed.’ That is, it’s common practice with audio gear acoustically treated room with the latest computer outfitted with coaxial power connectors to have the hardware and software tools, professional microphones, outside of the jacket positive and the inside negative — mixers, and signal processors. Budget is obviously a exactly the opposite of most consumer electronics. I’ve
&2/.4 0!.%,3 %.#,/352%3
#USTOMIZED FRONT PANELS CAN BE EASILY DESIGNED WITH OUR FREE SOFTWARE &RONT