Zero beat Metal detector

Published:2012/9/13 21:08:00 Author:Ecco | Keyword: Zero beat, Metal detector | From:SeekIC

This is the design circuit for a sensing the metal. Metal detectors have two oscillators. One is tunable and the other is Fix with a loop. Both are Tuned at same frequency. Outputs from this two oscillators are then mixed in a mixer which produces only the difference. Means, if both oscillators are at the same frequency, there is nothing heard in the speaker. This is the figure of the circuit. Source: NEXT.GR



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