Circuit forms efficient cosine calculator: 10/25/2001 EDN - Design
Ideas / The circuit in Figure 1 converts a 10V analog voltage
representing an angle between MIN and MAX and emits a voltage equal to
10 cos . This circuit can have an accuracy of better than 1% over 120 or
better than 0.2% over 90 . These figures represent an order-of-magnitude
improvement over a Taylor-series estimate for the same range and for...