If you’re looking for dozens of new circuits and DIY electronics project ideas, Elektor has you covered. The Elektor Circuit Special 2024 is out! In the 132-page edition is packed with a range of circuits and projects, including a compact hi-fi mono amp, a fingerprint sensor switch, and more. Visit the Circuit Special 2024 download page to access all the files associated with the issue. After you give in and start building DIY electronics projects of your own, make sure you share your progress on the Elektor Labs platform!
 
Elektor Circuit Special 2024 cover
Elektor Circuit Special 2024

Inside the Elektor Circuit Special 2024

The Elektor Circuit Special is a community favorite, especially for Circuits & Circuit Design lovers. As usual, it is packed with circuits, new projects, and more! Let’s take a closer look at what's inside the magazine.
 
Circuit Special 2024 TOC
  • Digital Load for High-Current Testing
  • Vocal Remover: Instant Karaoke Circuit
  • Audio A/B Selector with Gain Control: Switches from Microphone to Line Inputs
  • Better Charging for the LIR2032: Be Kind to Your Coin Cells
  • Touch Sensing Made Simple: A DIY Guide for Any Microcontroller
  • Universal Infrared Remote Switch: A New Life for Old Remotes
  • Fingerprint Sensor Switch: A Useful Proof-of-Identity Device
  • Thyristor-Based Power Supply Protection
  • Three-Phase Generator with Raspberry Pi Pico
  • Power an ESP32 from a Single Li-ion Cell
 
Digital Load circuit
Digital Load for High-Current Testing
  • Compact 12-W Hi-Fi Mono Amplifier: Small But Powerful
  • USB Battery Interface
  • Microcontroller-Powered Moo Box: Making Playful Sounds with a Microcontroller
  • Powering Low-Draw Devices with Power Banks: A “Stay Alive” Solution
  • Small Class-A Audio Amplifier with Current Output: Drive Speakers with Current Instead of Voltage
  • Pseudo-Balanced Module: High CMRR with Unbalanced Audio Links
  • Ni-MH Cells Automatic Charger: Refill All Your Battery Packs in One Go!
  • DC-DC 3-A Power Converter: Upgrade Your Fixed-Voltage Sources
 
Mono amp project
The finished mono amp prototype and a simple wiring diagram.
  • Remote Water Heater Monitor: Voltage and Current Detection for AC Lines
  • Attenuators for Audio Signals (1): Adjustable Via Jumpers
  • Pimp My Car Battery Charger (1): Don’t Throw It Away, Mod It!
  • A Board for the Blue One: PCB for Alps Motorized Potentiometer with Feedback
  • 50-Hz Reference from 60-Hz Mains Voltage: How to Use 50-Hz Electronics in 60-Hz Environments
  • Digital Isolators: Realizing Galvanic Isolation Easily
  • LM386 Ramp Generator
  • Door Opener for the Musically Talented
  • Elektor Classic: Surf Synthesizer
  • Pimp my Car Battery Charger (2): Don’t Throw It Away, Mod It!
  • A Timer for Ultra-Long Delays: Set It and Forget It!
 
power converter circuit special
The DC-DC converter.
  • Lamp Current Monitor with a Raspberry Pi Pico
  • Infrared Telegraphy
  • Fnirsi SWM-10: Repair Battery Packs With This Portable Intelligent Spot Welding Machine
  • Stereo Audio Codec for the ESP32 and Co.
  • Tin Soldering Techniques: Make Them Well Right Away!
  • Attenuators for Audio Signals (2): Switching Via Relays
  • USB-C Power: Drawing Power from USB-C Power Adapters
  • Three Circuits with Two and Three Counter ICs: 4017 ICs Working Together
  • Active Components – The Diode
  • Jack In and Jack Out: A Useful Insert Option for Audio Circuits

Head over to the Circuit Special 2024 download page to access all the essential files associated with the articles and proejcts.

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