I. C. Amplifier for Strain- and Tilt-meter

Abstract

At Mikawa Crustal Movement Observatory, the newly designed I.C, amplifier and the quadrature oscilator for the strain- and the tilt-meter are used since January, 1973. From the result of observation, it is found that the out-put of the I.C, circuit is of high stability and of low noise. The out-put of the strain-meter is used as strain seismogram.