FIELD: electricity.
SUBSTANCE: device includes electroacoustical transducer connected to amplifier connected to feedback circuit, and power source. In addition it features current rate sensor for power circuit of electroacoustical transducer implemented by feedback circuit with phase inverter. Phase inverter input is connected to current rate sensor, while output is connected to amplifier input.
EFFECT: simplified construction, enhanced process load and operation stability of device.
3 dwg
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