Table 3. Technical characteristics of vibration emitters.

Table 3. Technical characteristics of vibration emitters..

Table 3. Technical characteristics of vibration emitters

Name characteristics	Vibration emitter type
Name characteristics	VN-GL	VN	VNT-2	KVP-2	KVP-6	KVP-7
Operating principle	piezoelectric	piezoelectric	electromagnetic	piezoceramic	piezoceramic	electromagnetic
Installation location	enclosing structures, window glazing, utility lines	enclosing structures, window glazing, utility lines	window glass, utility lines	internal and external walls, floor slabs, utility pipes, glass thicker than 6 mm	internal and external walls, floor slabs, utility pipes, glass thicker than 6 mm	window glass up to 6 mm thick
Effective suppression radius of one vibration emitter, m	3 (brick wall 0.5 m) 4 (concrete wall 0.25 m)	3 (brick wall 0.5 m) 4 (concrete wall 0.25 m)		6±1 (wall type NB-18-30 GOST 10922-64)	6±1 (wall type NB-18-30 GOST 10922-64)	1.5±0.5 (on glass 4 mm thick)
Capacitance/resistance	15000pF/3 kOhm	5000 pF/5.6 kOhm	/110 Ohm
Nominal excitation voltage, V	50	50	2
Range working frequencies, kHz	0.175 – 5.6	0.175 – 5.6	0.175 – 5.6	0.175 – 5.6	0.175 – 5.6	0.175 – 5.6
Overall dimensions, mm	Zh45×50	Zh45×42	46x22x18	G40× 30	W50×39	W30×10
Weight, kg	0.4	0.3	0.04	0.25	0.55	0.02