Articles in the April issue of Elektor magazine include:
- AVR software defined radio part 2: sampling signals.
- RFID reader hacks: reading Mifare and iClass RFID devices.
- Preamplifier 2012 part 1: introduction and line-in/tone/volume board.
- Electronics for starters (4): constant current sources.
See the complete table of contents at the Elektor April 2012 web site.
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