FIELD: medical engineering. SUBSTANCE: method involves analyzing signal of transducer connected to bridge circuit fed by alternating non-sinusoid current power supply source from measuring bridge diagonal. The bridge circuit is fed with alternating non-sinusoid current having on-off time ratio that is not equal to 2. Bridge circuit unbalance sign is evaluated from selected polarity pulse duration. EFFECT: enhanced accuracy of immunological analyses. 7 cl, 9 dwg
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