There has been an unfortunate tendency to accept mathematical theories without adequate laboratory test of their practical applicability. This prompted an experimental study of the relation between intermodulation and harmonic distortion in various single amplifier stages and in a complete push-pull amplifier. The results indicate that the ratio of percentage intermodulation distortion to percentage harmonic distortion may vary between less than 0.2 and over 10. Accordingly, the widely published predictions of a ratio between 3.2 and 3.8 are shown to be often incorrect, probably because of the inadequate scope of the mathematical treatment.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.