Zero beating Metal Detector

Published:2012/9/13 21:11:00 Author:Ecco | Keyword: Zero beating, Metal Detector | From:SeekIC

Both oscillators are built using MPF102 or J310 FETs. The Mixer is BF998 dual gate MOSFET. Audio IC amplifier is LM386 which drives a speaker. I have used a stabilized supply for two oscillators and mixer. U1, a 78L05 is doing this job nicely. Source: NEXT.GR



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