Eddy currents against fungus. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Eddy currents against fungus. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Home, household, hobby

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In vegetable stores, country houses, outbuildings, mold and wood fungi often start up, destroying everything wooden: floors, ceilings, ceilings. They also spoil many foods. However, pests can be successfully dealt with using ... eddy currents. It is enough to lay a closed loop along the perimeter of the foundation of a rural house - a metal tire connected in a ring with a wire 8-10 mm thick. As a result of atmospheric phenomena, eddy currents will be induced in it.

Good results are obtained by a device operating on the principle of a "mine detector". Periodically, they process canned vegetables and fruits.

Eddy currents against fungus

The device works as follows. Made on transistors V1, V2 (Fig. 11), the DC/AC converter generates a pulse voltage of 40 V at a frequency of 1 kHz in the winding III of the transformer T300, which is supplied to the closed circuit L1.

Transformer T1 is wound on a Ш12Х12 core (window 12x26 mm). Winding 1 contains 5x2 turns of PEV 0,1 wire, II-29X2 turns of PEV 0,27, and winding III-2000 turns of PEV 0,1 wire. The contour also has Ø 200 mm, it is made of copper wire Ø 2,5 mm. If there is no generation, swap the leads of winding I or II.

The devices were assembled on circuit boards 120x60 mm in size made of foil-coated getinax or fiberglass (the drawing of each board is given next to the schematic diagram of the corresponding device) and placed in cases made of plexiglass 2-3 mm thick.

You can power automatic devices from a car battery or from an external 12 V power supply of a transistor tape recorder, or you can make a home-made source based on a TVK television transformer (Fig. 12).

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