Method of and apparatus for low noise current amplification

Details Method of and apparatus for low noise current amplification Method of and apparatus for low noise current amplification

H - Electricity

03

F

330/13, 330/22

H03F 3/45 (2006.01) H03F 1/26 (2006.01)

Patent

CA 1219044

METHOD OF AND APPARATUS FOR LOW NOISE CURRENT AMPLIFICATION Abstract of Disclosure This disclosure is concerned with novel techniques and circuit configurations for rendering high gain operational amplifiers and related differ- encing amplifiers adaptable for use with very low impedance signal sources to permit amplification of low-power signals with ultra-low noise, high D. C. stability high gain, and wide frequency response, through development of the signal current as a very small increment on a much larger pre- existing current forced in opposite directions through an electronic switching device connected to such amplifier and producing minimal uncorrelated noise therein.

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