| 摘要 |
Energy is conserved and the life of a lithium battery is extended in a timepiece by using a voltage reduction circuit for normal operation and a voltage regulating circuit during periods of heavy current drain, e.g., alarm or lamp function. A no-clock detector indicates the functional status of the timekeeping standard signal generator and voltage is raised to enable self-starting when oscillator signals are absent. A timer holds the regulated voltage on-line until operations stabilize after a period of heavy load and capacitors used in the voltage reduction circuit bolster the regulated voltage output during high load periods.
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