12.07.2015 Views

The Potentiostat

The Potentiostat

The Potentiostat

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Gain-Phase Repositionwith 0 to 100 % Ir Compensationr+RdlAoRel + r + Rdl11+pτο1 + pτ′′1 + pτ′r3r−R4r+Rdl3r − R4+ Rdl1+ pτ′1 +pτefo fc ' fc '' ftThis figure is an illustration of the phaseshift change with decreasing positivefeedback for Ir compensation. <strong>The</strong> phaseshift progressively reduces when the Ircompensation is minimized from up to100%, down to 99%, down to 90%, andfinally down to no positive feedback at all –zero Ir compensation.

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