FIELD: seismology; control of aerocosmic and marine objects. SUBSTANCE: transducer is used for detecting recording and checking of small mechanical oscillations of infralow-frequency and low-frequency ranges, when checking the state of large-sized constructions (dams, mines, bridges, buildings). Transducer has diffusion and magnetohydrodynamic transducers built in body containing electrolyte. It also includes current-to-voltage differential converter, correction device, optron and amplifier connected in series with diffusion transducer and with one another, as well as series-connected differentiator and voltage-to-current converter. Its output is connected to input of magnetohydrodynamic transducer, and amplifier output which serves as transducer output is connected either to differentiator input or input of voltage-to-current converter. EFFECT: extended frequency range. 1 dwg
