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Published on: January 28, 2022
Stable sinusoidal driver circuit for tuning fork choppers
1Department of Chemistry and Materials and Molecular Research Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720, USA.
Abstract:
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.
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