Abstract

This communication describes the electronic design for improved electrometry and temperature control of ion-sensitive electrodes. Some features are: the use of a square wave pulsed metal-oxide semiconductor field-effect transistor (MOSFET) to replace the conventional chopped electrometer preamplifier unit; a solid-state-powered, MOSFET-controlled, reference voltage source substituting for the conventional ‘bucking’ voltage; new d.c. complementary stabilized power supplies, and differential amplifying units, combine to make possible many intriguing advances.

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