Converters logarithmic and their application to the measurement of application transmitted

摘要

The invention aims at improving logarithmic converters and/or amplifiers and concerns the applications of such devices, in particular in photometric analysis instruments. …??These amplifiers are characterised in that they are linear and have a gain which can be programmed by the computer mu P and may possibly be preceded by a reference voltage system. …??Application to the measurement of the light transmitted by samples. …IMAGE…