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Magazine July/August 2009

Content

ElektorWheelie

The electronics behind a rather special kind of vehicle

Full-colour Night-flight Illumination

Smoggy, use your Walkman to detect electrosmog

Solar-driven Moisture Detector

Dimmable Aquarium Light with Simulated Sunrise and Sunset

Doubling Up with the PR4401/02

Digital Sweep and Sinewave Generator with direct frequency entry

Measuring Milliohms with a Multimeter

Improved Hybrid HeadPhone Amplifier

Lithium Battery Charger using BQ24103

Simple Temperature Measurement and Control

Pre-emphasis for FM Transmitter

SSR 2.0, OptoMOS semiconductor relays

Four-component Missing-pulse Detector

Hassle-free Placement of SMD Components

Control Interface via PC Keyboard

Programmable Nokia RTTTL Player

Six-digit Display with SPI Port

Low-drop Series Regulator using a TL431

Load Protection for Audio Amplifiers

Long Duration Timer using ATtiny2313

Frequency Divider with 50% Duty Cycle

PIC Detects Rotation Direction

Vocal Adaptor for Bass Guitar Amp

TurboGrafx-16 (PC-Engine) RGB Amplifier

Pulse Clock Driver with DCF Synchronisation

Two TV Sets on a Single Receiver

Remote Control for Network Devices

Momentary Action with a Wireless Switch

LEDify It!, mobile 3-watt LED Lamp

Simple Wireless and Wired Emergency Stop System

Luxeon Logic, brightness control for LED torches

Preamplifier for RF Sweep Generator

Frequency and Time Reference with ATtiny2313

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This complete range of The Audio Collection offers you access to more than 225 different audio circuits originally published in Elektor Electronics magazine between 1996 and 2008.

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Home › Products › Magazines › 2009 › Magazine July/August 2009

Magazine July/August 2009

Content

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