Ultrasonic atomizer with signalling device: 1 – atomizing chamber; 2 – ultrasonic piezoelectric radiator; 3, 14 – transistor; 4 – induction coil; 5 – phase shifting circuit; 6, 17, 19, 20 – resistors; 7 – transformer; 8, 11, 15, 18, 21 – capacitors; 9 – quartz resonator; 10 – DC cutoff capacitor; 12 – variable induction coil; 13 – autotransformer; 16 – sensory elements (plates); 22 – emitter repeater; 23 – trimming resistor; 24 – device to convert electric oscillations to acoustic vibrations