Narrow band electroencephalographic amplifier

Details Narrow band electroencephalographic amplifier Narrow band electroencephalographic amplifier

H - Electricity

03

F

330/13, 330/20,

H03F 3/195 (2006.01) H03F 1/48 (2006.01) H03F 3/45 (2006.01)

Patent

CA 1253585

- 19 - NARROW BAND ELECTROENCEPHALOGRAPHIC AMPLIFIER ABSTRACT OF THE DISCLOSURE A low noise, high gain differential amplifier suitable for EEG amplification is constructed in a shielded metal enclosure, preferrably on a ground plane circuit board. The amplifier is battery powered to eliminate all possibility of noise from the power system. The amplifier utilizes a pair of operational amplifiers to provide high input impedance for each of two input signals. A differential amplifier generates an internal signal which is filtered and amplified by a pair of bandpass amplifiers and overlapping low pass and high pass amplifiers.

505939

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