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New Elektor Zener Diode Tester

Discover the Elektor Zener Diode Tester Kit, a DIY bench instrument for testing Zener diodes, LEDs, and semiconductor devices up to 54 V.

A Phono Preamp Built on Forgotten Design
Moving-coil cartridges put out barely a millivolt, and getting that to line level...
- New Elektor Zener Diode Tester
  Discover the Elektor Zener Diode Tester Kit, a DIY bench instrument for testing...
- Analog Power Supply: Three Automatic Rip...
  Three transformer stages switch in automatically, so the pass transistor only ever...
- CA3089 RSSI Chip Repurposed as Ionospher...
  An FM IF amplifier IC becomes a shortwave propagation meter. Instead of tuning a...
- Two RS232 Terminals on One Serial Host
  Run two RS232 terminals in parallel on a single serial host — no power supply,...