Input connections for differential amplifiers

摘要: Two polarized light beams from the same source are rotated by passage through Faraday rods having windings supplied a current to be measured. The then counterrotated second compensating current. Each beam is applied splitting semi-reflective mirror which displaces it into distinguishable components. Optical analyzers attenuate each in accordance with function of angular displacement reference or preferential polarization planes. Pairs photoresponsive detectors transduce resulting pairs electrical signals, pair signal different sign sense. Signals like combined and two signals inputs differential amplifier. amplifier output used develop proportional compensation for can displayed as measure input