Elektor July - August 2005

Elektor July - August 2005 English | PDF | 40 mb
? Negative-Output Switching Regulator
? Converting a DCM Motor
? Solar-powered SLA Battery Maintenance
? Simple Window Comparator
? Simple Stepper Motor Driver
? Extension for LiPo Charger
? Resistor-programmable Temperature Switch
? PCI Express
? Vehicle Diagnostics using OBD-2
? OBD-2 Analyser
? Chip Tuning
? Signal Wizard v.2. from UMIST
? FT369 One-Chip Servo Controller
? Gigabit Crossover Cable
? Toslink Repeater/Splitter
? Optical Mixer
? Mobile Phone Operated Lock
? Minimalist Microcontroller
? Energy-saving switch
? Overcurrent Cutout Switches
? Audio Click/plop Suppressor
? Simple Oscillator / Pipe Locator
? IR Testing with a Digital Camera
? Proximity Switch
? Discharge Circuit
? Gentle Battery Regulator
? Comparing Signed Integers
? Telephone Line Watchdog
? MSP430 Programmer
? Resistor Colour Band Decoder
? Micropower Voltage Regulator
? Garage Timer
? Phantom Supply from Batteries
? Simple Short-Circuit Detection
? Swapping without a Buffer
? Reflection Light Barrier with Delay
? Cable Tester
? DRM Direct Mixer Using an EF95/6AK5
? Two-Cell LED Torch
? Hard Drive Switch
? Remote Control Blocker
? Converter IC with Integrated Schottky Diode
? Virtual Prototyping Board
? Compact 200 W Output Stage
? Protection for Voltage Regulators
? Video Sync Generator
? Luxeon LEDs
? Bidirectional I2C Level Shifter
? Extended Timer range for the 555
? Fridge Thermostat
? USB for the Xbox
? 12-V Dimmer
? Low-cost LiPo Charger
? DIL / SOIC / TSSOP Experimenting Boards
? Digital VU Meter
? 3 V Headphone Amplifier
? Servo Points Actuator
? Short-Wave Superregenerative Receiver
? Searching for Components
? Medium-Wave Modulator
? Filter-based 50 Hz Sinewave Generator
? Long-Delay Stop Switch
? Transformerless 5-volt Power Supply
? Telephone Line Indicator
? PC IrDA Port
? Carriage Detection for Model Railways
? Short-Wave Regenerative Receiver
? Improved DECT Battery Charger
? 1:800 Oscillator
? MP3 Adapter for TV
? Transistor Dip Meter
? Three-component Li-ion Charger
? DRM Double Superhet Receiver using an EF95/6AK5
? Simulator for Bridge Measurements
? Code Lock with One Button
? LED Flasher for 230 V
? On-demand WC Fan
? Simple Microphone Preamplifier for Radio Amateurs
? 9-in-1 Logic Glue / Level Translators
? Universal I/O for Power Amps
? Modifying Stripboard for SO Packages
? Remote Control using RF (transmitter)
? Cheap Dot-mode Bargraph Display
? RF remote Control Extender (Receiver)
? Simple Cable Tester
? 1 MHz Frequency Counter
? High Voltage Regulator
? PDM Pulse Generator
? Low-cost Step-down Converter
? Noise Suppression for R/C Receivers
? EE-ternal Blinker
? Slave Flash with Red-Eye Delay
? Short-Wave Converter
? PIC PWM Controller
? DVI Interface
? CCO Metal Detector
? Balancing LiPo Cells
? Plant Growth Corrector
? Valve Sound Converter
? THD: Sallen-Key versus MFB
? An Electronic Watering Can
? Precision Headphone Amplifier
? USB Power Booster
? Dual Oscillator for ¦ÌCs
? Step-up Converter for 20 LEDs
? Passive 9th-order Elliptical Filter
? Adjustable Duty Cycle
? Bridge-Rectifier LED Indicator
? Stable USB power Supply
? Efficient Current Source for High-Power LEDs
? Low-drop Regulator with Indicator
? Simple Overcurrent Indicator
? Navigator Assistant


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