Possibly one of the simplest metal detectors going, a BFO type metal detector built using discrete components. This circuit contains only three active devices...
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Page last updated: 08/08/2021 |
Metal Detectors
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Possibly one of the simplest metal detectors going, a BFO type metal detector built using discrete components. This circuit contains only three active devices... |
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Another simple yet very effective BFO type metal detector. It's two transistors (2N3904's) and one integrated circuit (LM386) making this unit quite able to drive either headphones or a small loud speaker... |
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And onto the third BFO type metal detector, and performance has again been improved still further. Three transistors (two BF245's, one 3N201) and one integrated circuit LM386 providing ample audio to drive either headphones or a small loud speaker... |
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Another BFO type metal detector, here using only discrete components as with BFO Metal Detector 1 However here with six transistors (all 2N3904's), a quite respectable output is obtained... |
