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Title: Voltage conversion system for electronic timepiece

Abstract: A voltage conversion system for an electronic timepiece having a power source, which system generates power at lower voltage level than that of the power source for operating at least one of a frequency standard, a frequency converter, a time counter circuit and a display system. The voltage conversion system comprises an oscillator circuit coupled to the power source to generate output signals, a plurality of capacitors, and a plurality of switching elements responsive to the output signals for alternately setting the capacitors in a parallel connected condition and a series connected condition, whereby an output voltage lower than that of the power source is generated at an output terminal of the system.


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Inventors: Morokawa, Shigeru (Tokyo, JP)

Application Number: 912268
Filing Date: 1978-06-05
Publication_date: 1980-06-03
Assignee: Citizen Watch Co., Ltd. (Tokyo, JP)
Primary Class(es): 368/67 331/57, 331/66, 331/143, 368/79, 368/83, 968/890, 968/DIG1
Other Classes:
US Patent Ref:
3999368Dec, 1976Yoshida58/23.
3999370Dec, 1976Morokawa58/23.
4094137Jun, 1978Morokawa58/23.

Other Refs:
Primary Examiner: Truhe, J. V.
Assistant Examiner: Pojunas, Jr., Leonard W.
Attorney: Jordan; Frank J.