Conclusions
The application of ac compensation circuits provided with double and double shunting decades is limited by the frequency range within which the precision of modulo division and the given minimum phase shift between the reference and compensation voltages is maintained. These limitations can be evaluated from (11) and (12), remembering that the phase shift is affected substantially by the capacitance of switching contacts.
Ac compensators with star-connected dividers are subject to easier requirements with respect to the capacitance of their switching elements. The division-ratio precision and minimum phase shift are fully determined only by the quality of the resistors in the circuit, i.e., by their meeting condition (7), which facilitates considerably the design of such dividers.
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Literature cited
K. B. Karandeev, Special Methods of Electrical Measurements [in Russian] (Gosénergoizdat, Moscow, 1963).
L. F. Kulikovskii and A. M. Melik-Shakhnazarov, AC Compensators [in Russian] (Gosénergoizdat, Moscow, 1960).
K. A. Netrebenko, Digital Automatic Compensators [in Russian] (Gosénergoizdat, Moscow, 1961).
E. I. Tenyakov, Transactions of the Conference on Automatic Control and Electrical Measuring Methods [in Russian] (Izd. AN SSSR, Siberian Branch, 1961).
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Gorelikov, N.I., Klistorin, I.F. Potential dividers in automatic AC digital voltmeters. Meas Tech 8, 733–736 (1965). https://doi.org/10.1007/BF00985634
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DOI: https://doi.org/10.1007/BF00985634