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Low frequency ultrasonic generator, amplifier, output regulation of the working process with the same DZ-1. Difference is in the low-frequency ultrasonic signal generator and the power amplifier and a level-emitter-follower, to increase the load-carrying capacity, to triple output. Modulator is made up of transistors VT12 and VT13 non-steady state of multivibrator, VT13 collector output. Output the rectangular wave directly, VT14, VT15 emitter-follower forming undulating waves of modulations. S1A and S1B linkage, when S1 is in the "1" position, the whole circuit breaker does not work when S1 is in the "2" position, the power is switched on, continuous ultrasonic direct output modulation