Rapid Communication: Cleaning up a Hartley oscillator

Abstract

In a programme to understand, and learn to control, radiofrequency interference from neurological prostheses, It was discovered ha a harmless-looking Hartley oscillator (one type of harmonic oscillator) generated n forest of harmonics extending to I GHZ. These harmonics were not difficult to eliminate. The point of this paper is lo emphasize that, given the selection of instruments used by most development engineers, the harmonics would probably have been missed.