Setting circuit for electronic timepiece - using setting pulses with variable pulse train frequency altered in stages

摘要

The setting circuit is for an electronic timepiece with an oscillator, a frequency divider and a counter network, supplying signals to a digital display. The circuit uses setting pulses with a variable pulse train frequency, fed into the counter network. A setting pulse generator automatically supplies a variable setting pulse train frequency after selection of the time setting operation. The pulse train frequency may be varied in stages and the setting pulse generator pref. comprises a voltage-controlled oscillator (20). The control input (21) of the latter is coupled to a time constant circuit (R1, C) the capacitor (C) of which is bypassed by a setting switch (S) for normal running of the timepiece.