Magic Eye Audio Detectors

Submitted by imre on Fri, 09/29/2006 - 02:00.

Tubes

This project included a complete power supply and circuitry to enable a voice activated Magic Eye tube. The user speaks into a microphone, it is amplified by the triode in the 6T8A (the tube to the right of magic eye tube), then the signal is rectified and a peak detected signal is sent to the magic eye tube. Inside the magic eye tube, there is another triode which further amplifiers the signal and then drives the deflection grid in the cathode ray device. I will post the circuit sometime soon. I gave it to my Dad for Father's Day - what a useless gift.

1st Detector in Action (Open Eye)
2nd Detector - Complete, Light Up

Here is the complete gallery.

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Magic Eye Audio Detectors

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