Vegetable stores, summer houses, outbuildings buildings often infest mold and wood fungi, destroying all wooden: floors, ceilings, ceilings. Spoil them and many food products. However, pests can to deal successfully with... eddy currents. Enough on the perimeter of the Foundation rural house to pave a closed loop is connected to the metal ring the tire ate the wire thickness of 8-10 mm. In atmospheric phenomenon will be induced eddy currents.
Good results are obtained instrument operating on the principle of "mine detector". Periodically they treated canned vegetables and fruits.
The device operates as follows. Transistors V1, V2 (Fig. 11) DC-DC converters AC I generates a frequency of 40 kHz in the winding III of the transformer T1 of the pulse voltage of 300 V, which comes on a closed loop L1.
Transformer T1 is wound on a core SH (window 12x26 mm). Winding 1 contains 5x2 turns of wire sew 0,1, II 29X2 turns of PEV is 0.27, and the winding III-2000 of turns of wire sew 0,1. Contour and has O 200 mm, it is made of copper wire Ø 2.5 mm. If the missing generation, reverse the findings of the winding I or II.
Collected devices on circuit boards the size of 120x60 mm of foil Micarta or fiberglass (figure each Board next to Dan fundamental the scheme of the corresponding device) and placed in a housing made of Plexiglas thickness of 2-3 mm.
Nourish automatic devices can from a car battery or a from the external power supply (12 V) of the transistor tape recorder or to make homemade source-based television transformer TCE (Fig. 12).
