Elektor at 65: In the February 1981 Elektor magazine, we covered: an audio power meter, the Wagnephone mini keyboard, noise reduction, a process timer, high voltage from 723, possible extensions for the Elektor Junior Computer, a voiced/unvoiced detector, an emergency brake for a power supply, a low noise 2-meter pre-amp, and more. elektormagazine.com/magazine/elekt… #elektor65
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