Experimental Design in Simulation - A Sine/Cosine Oscillator (Part 1: basic theory)

 When Barrie Gilbert turns his mind to an area of design, expect the unexpected. In this first article in a series of several, Barrie starts the design of a versatile audio test bench sine-cosine generator. Apart from being the goal, the design is also a vehicle to explore the strong points and traps of using Spice simulators for design work. Yet another goal of this design series is to show how current mode circuits can often solve design problems more elegantly and efficiently than traditional voltage mode circuits.