This page has been robot translated, sorry for typos if any. Original content here.

Diagram of the device from mosquitoes and midges

Adjustment is reduced to the choice of the generation frequency range, which is set by changing the capacitance C1 and the resistance R 3. The range of 1-1.5 meters.

VT1 - MP36 - MP38.
R1-SPZ-b, SPO 100kOm
R2. -100KOhm
R 3. -10 kOhm C1. - 3300 uF
IN 1. - tel capsule:
TD-6, DEM-4m;
Dynamic head
0.1 GD-6: 0.025GD-