A Versatile Signal Generator for Voltammetric Techniques

Publisher Website
Google Scholar
Abstract
A signal generator has been designed to produce precise triangular waves and a variety of ramp-and-hold signals. The circuit involves a network of Zener diodes and two conventional operational amplifier circuits. An externally generated ramp voltage is required and can be obtained from either an operational amplifier integrator or the sweep generator from a cathode ray oscilloscope. The ramp-and-hold signals have been proven to be extremely useful in stationary electrode polarography, especially when dealing with multicomponent system and complex reaction mechanisms. Triangular waves with scan periods from about 150 sec to less than 1 msec can be produced and a potential “hold” can be obtained at any desired point.