Occupying a footprint of just 2.57×3.24 mm, the STA333IS single-chip digital audio system from STMicroelectronics furnishes up to 20 W of audio output power for use in space-constrained LCD and LED televisions, docking stations, and digital wireless speaker systems. With is wide operating voltage range of 4.5 V to 18 V, the device is also […]
Tiny digital audio SoC delivers up to 20 W Read More »
The following is a white paper by Silicon Labs with an innovative new process and technology that I believe deserves some level of detail and explanation for informative and educational purposes for EDN readers. Learning about this technology will help all designers give birth to new ideas and architectures as well as help those other
Product focus: CMEMS oscillator architecture Read More »
Apple this week is celebrating the five year anniversary of its Apps Store. If you go to the store, you’ll notice Apple is giving away five games and five apps to celebrate the anniversary. When it opened its virtual doors, the Apps Store did so with a mere 500 apps. Now, it showcases more than
20 Apple apps for engineers Read More »
Note: By “beginner’s guide”, I mean a guide written by a beginner. (I made it at TechShop SF, during my first weeks!) I have some technique tips to share, but for more in-depth questions, Google is your friend. Solder paste allows you to populate a board with many tiny components, without straining your eyes and
Beginner's Guide to Solder Paste Read More »
This Design Idea describes a 9V battery-voltage monitor whose total parts cost less than 34 cents (Figure 1). You configure transistor Q1 as a 10-mA current sink. LED1, a Kingbright WP7104IT, is on when the battery voltage is good. When the battery voltage nears the threshold voltage, the LED gradually dims. It goes out once
Configure a low-cost, 9V battery-voltage monitor Read More »
This project describes an Arduino-based FM transmission using the KT0803K Digital Stereo FM Transmitter Radio-Station-on-a-Chip. The KT0803K device is designed to process high fidelity stereo audio signal and transmit modulated FM signal over a short range. It features an on-board 20-bit audio ADC and supports standard I2C interface for frequency setting and power control the
Build Your FM transmission Station with Arduino Read More »
This project was inspired by the “Big Air” open baffle system by Jim Strasser (please contact me for additional information regarding that system). That Big Air open baffle is a simple good sounding system based on a different woofer, smaller baffle and does not incorporate a few other things that I have added. My target
COBIES – Cheap Open Baffle Speakers Read More »
Although this kind of voice effect can be obtained by means of some audio computer programs, depending on the equipment you are using this microphone input and loudspeaker output could be more versatile. This design uses a variable gain microphone preamplifier built around IC1A, a variable steep Wien-bridge pass-band filter centered at about 1KHz provided
Telephone Call Voice Changer Read More »
Series 1930 may be probably familiar to you, for example from our article Series 1930 – Double Pole Rocker Switches with IP65. Till now, we had in stock types 1935.x with green and red backlight. We react to your requests for switch with the same excellent properties but without a backlight and for as good
Say stop to dust and water with the Marquardt 1932 switch Read More »
Google’s latest and hottest gadget needs little introduction. Since its public unveiling in April 2012, the tiny head-mounted Android computer has been collecting controversy and sociological analysis. It is currently available in limited beta to eminent members of the tech community and to a selection of “Glass Explorers.” As members of the latter program, we
Teardown: What's inside Google Glass? Read More »
