MULTICHANNEL BIOPOTENTIAL AMPLIFIER Russian patent published in 2000 - IPC

FIELD: medical engineering. SUBSTANCE: device has electrodes for reading biopotentials, analysis unit, indication unit, nine operation amplifiers added, ten resistance voltage dividers having given relations between the resistors and 8-12 Hz frequency test pulses shaper. The first to eighth resistance voltage dividers are placed between outlets of the first to eighth operation amplifiers and the ninth operation amplifier. Outlets of the first to eighth resistance voltage dividers are connected to inverting inputs of the first to eighth operation amplifiers, the ninth resistance voltage divider being placed between the outlet of the ninth operation amplifier and outlet of the tenth resistance voltage divider connected to 8-12 Hz frequency test pulses shaper outlet. The ninth resistance voltage divider outlet is connected to inlet of the ninth operation amplifier. Non- inverting inlets of the first to ninth operation amplifiers are connected to the first to ninth electrodes for reading biopotentials. The first to ninth operation amplifiers inlets are connected to the first to ninth electrodes for reading biopotentials. The first to eighth operation amplifiers outlets are connected to the first to eighth inlets of the analysis unit which outlet is connected to the indication unit inlet. EFFECT: simplified design. 2 dwg