Abstract
SUMMARY A computer programmable sweep generator for use in voltammetric electro chemical studies has been constructed from a reversible binary counter and a digital-to-analog converter. The generator produces staircase ramps, triangular waves, and sawtooth waves. The initial potential, upper potential limit, sweep direction, and resolution (step size and sweep rate) can be controlled by a 12-bit computer word. This generator is characterized by low drift, high sweep rate accuracy, high reproducibility of its various settings regardless of sweep rate, and ease with which it can be controlled by a computer. In combination with the proper clock and potentiostat, it can be used to implement closed-loop, on-line computer control of electrochemical measurements.
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