Geomagnetic Field Detector
This basic oscillator will detect the Earth magnetic field. The ferrite rod and coil are taken from an old Medium Wave receiver and a small magnet is glued at one end. Tune to a medium wave commercial station until you hear a beat note. Any movement of the ferrite rod will produce an audible note that depends on the prevailing Earth magnetic field. Screening is essential. Use a plastic box padded, on the inside, with copper wires running parallel to the rod and grounded in one place only. A small hole is made in the box in order to adjust the trimmer capacitor with a plastic screwdriver. An American equivalent to the BC337 could be the 2N2369A but I did not try it out.
Circuit Diagram
July 25, 2009
Geomagnetic field detector
Electronics is the study and use of electrical that operate by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves. and semiconductors. The pure study of such devices is considered as a branch of physics, while the design and construction electronic circuits to solve practical problems is called electronic engineering.
Popular article
-
Long Range IR Transimmiter Most of the IR remotes work reliably within a range of 5 metres The circuit complexity increases if you design th...
-
introduction:- This nifty sound level meter is a perfect one chip replacement for the standard analog meters. It is completely solid state a...
-
REMOTE CONTROL FOR HOME APPLIANCES Connect this circuit to any of your home appliances (lamp,fan, radio, etc) to make the appliance turn on/...
-
Charge No one knows what charge really is anymore than anyone knows what gravity is. Both are models, constructions, fabrications if...
0 comments:
Post a Comment