FIELD: radio engineering, communication.
SUBSTANCE: instrumentation amplifier comprises: an input precision converter of (1) of a first (2) and a second (3) input voltage source connected to a common power supply bus (4), a first (9), a second (10) and a third (11) feedback resistor, an active adder (12) with an inverting (13) and a non-inverting (14) input.
EFFECT: high coefficient of attenuation of input in-phase voltage and eliminating the in-phase component in output signals of operational amplifiers, which improves efficiency of the amplitude characteristic thereof.
4 cl, 26 dwg
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