The modeled K2-W input impedance is >100 MΩ. The LTspice modeled result shows 1.00 nA of input current. Early SPICE simulations based on that model provided reasonable results. Therefore ...
Throughout this six-part series, 1-5 we have worked toward creating and evaluating a basic SPICE model for the Philbrick (GAP/R) K2-W, the first commercially available operational amplifier.
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