Peculiarities in Construction of Amplifiers of the Piezo-Beam Signal for a Laboratory Hydro-Acoustic Research Complex

Amplifiers of the buildup signal of piezo emitters in the hardware of a hydroacoustic research complex are described. They are designed to amplify short-term signals with amplitude, frequency, and phase modulation at a frequency of 1 MHz. A feature of the linear signal amplifier with amplitude modulation is the use of an amplifier with current feedback, which is characterized by high speed properties. A feature of a switch signal amplifier with a constant amplitude (frequency and phase modulation) is the use of optocouplers in the control pulse shaper circuit of the output MOSFETs (metal–oxide–semiconductor field effect transistor), which ensured the symmetry of the pulses. The high duty cycle of the amplified signals made it possible to avoid the need for special heat sinks and to perform a simple and compact implementation of the circuits. The gain of the linear amplifier was 18 dB, the maximum amplitude of the output signal was 80 V, and the gain of the switch amplifier and switch signal amplitude were 26 dB and 200 V, respectively. Specific circuit solutions are given.