Lamp-trap for pests. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Home, household, hobby
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Everyone knows that insects, flying and ground, rush towards a light source. This “weakness” of theirs can be used to combat garden pests.
A socket connected to a vacuum cleaner is placed in front of an electric lamp lit at night in the garden. At certain intervals, the duration of which is set depending on the accumulation of insects in the illuminated area, the vacuum cleaner is turned on. The intervals of its operation are set by a multivibrator on transistors V1, V2 (Fig. 9).
The variable resistor R2 regulates the pause between the key and the vacuum cleaner for up to 120 minutes. The electrical household appliance operates for 20 s - while the contact plates of the K1 RSM-2 relay are closed (passport 1017.181.02). C1, C2 - electrolytic capacitors K50-6.
During the day, you can connect a tape recorder to the same device, on which sounds that scare away birds are recorded, or a moving puffball.
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