Circuit arrangement for generating of sinusoidal oscillations of the same frequency by summing up of a plurality of rectangular oscillations

摘要

The sineware generator produces its sinewave output by adding several square wave sings which are of identical frequency but which are displaced progressively in phase. A shift register with feedback is coupled to a clock generator and has the same number of stages as there are square waves that need to be produced. The clock generator frequency is an integral multiple of the frequency of the required sinusoidal output signal. The outputs of each stage of the shift register are connected over resistors to a common point where they are added together to give the sinewave or more precisely, an approximated sinewave.