Stable sinusoidal driver circuit for tuning fork choppers.
A circuit is presented which can drive tuning fork choppers, such as the Bulova L40 and L2 series. The advantages of this circuit over the factory-supplied 5A-type driver are better drive-amplitude stability, freedom from drift due to line-voltage variations, and a cleaner, transient-free sinusoidal reference signal. Test results indicate an improvement in long-term stability by as much as a factor of 4.
Podolske
J
J
Department of Chemistry and Materials and Molecular Research Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720, USA.