Tweet
Hi
Trying to revive an old "mine detector". It's a DIY project, that supposedly was good for finding out buried underwater iron pipes. Found some notes that go with it and they refer it as "122Hz" Detector.
It had dead batteries, tried feeding it from the lab psu --> draws 1.5A from both + and - rails and hums audibly, tinkering with controls produces various tones from the audio output, so chances are it might still work. New NiMh cells are on order, but until they arrive it's a bit hard to field test it.
Judging from the pictures and this (scarce) information, what would you think this think is good for? Any idea what the various controls are for?
About the construction, It seems it has 2 main coils, a heavy (TX?) coil that is in line with the tube and smaller (RX?) coil that is perpendicular to the tube.. juding from the connectors there is a 3rd reference coil. Overall leghth of the thing is about 2 meters. The missing label next to the bottom BNC connector read Ref voltage 4.85V
Trying to revive an old "mine detector". It's a DIY project, that supposedly was good for finding out buried underwater iron pipes. Found some notes that go with it and they refer it as "122Hz" Detector.
It had dead batteries, tried feeding it from the lab psu --> draws 1.5A from both + and - rails and hums audibly, tinkering with controls produces various tones from the audio output, so chances are it might still work. New NiMh cells are on order, but until they arrive it's a bit hard to field test it.
Judging from the pictures and this (scarce) information, what would you think this think is good for? Any idea what the various controls are for?
About the construction, It seems it has 2 main coils, a heavy (TX?) coil that is in line with the tube and smaller (RX?) coil that is perpendicular to the tube.. juding from the connectors there is a 3rd reference coil. Overall leghth of the thing is about 2 meters. The missing label next to the bottom BNC connector read Ref voltage 4.85V
Comment