Abstract
IT is a well-known fact that when a sinusoidal E.M.F. (of the form E0 sin wt) is available, it is a relatively simple matter to design an electrical system such that alternating currents or potential differences will occur in the system, having a frequency which is a whole multiple of the applied E.M.F., e.g. 2w, 3w, etc. For example, when the E.M.F. E0, sin wt is applied to a diode-rectifier, the current in the anode circuit will include a component of double frequency, i.e. 2w. This is therefore one method of frequency multiplication. Several other methods could easily be mentioned.
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VAN DER POL, B., VAN DER MARK, J. Frequency Demultiplication. Nature 120, 363–364 (1927). https://doi.org/10.1038/120363a0
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DOI: https://doi.org/10.1038/120363a0
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