发明名称 |
STEPPING MOTOR CONTROL CIRCUIT AND ANALOG ELECTRONIC TIMEPIECE |
摘要 |
A control unit is provided which drives a stepping motor in a first mode in which a driving pulse is selected between one kind of main driving pulse and a correction driving pulse with energy greater than the one kind of main driving pulse in accordance with a rotation state of the stepping motor and the stepping motor is driven or a second mode in which the driving pulse is selected among plural kinds of main driving pulses and a correction driving pulse with energy greater than the plural kinds of main driving pulses in accordance with the rotation state of the stepping motor and the stepping motor is driven. The control unit switches a mode between the first and second modes depending on whether the voltage of a secondary cell serving as a power supply exceeds a switch voltage and drives the stepping motor.
|
申请公布号 |
US2012306428(A1) |
申请公布日期 |
2012.12.06 |
申请号 |
US201213479799 |
申请日期 |
2012.05.24 |
申请人 |
MANAKA SABURO;OGASAWARA KENJI;SAKUMOTO KAZUMI;HONMURA KEISHI;SHIMIZU HIROSHI;YAMAMOTO KOSUKE |
发明人 |
MANAKA SABURO;OGASAWARA KENJI;SAKUMOTO KAZUMI;HONMURA KEISHI;SHIMIZU HIROSHI;YAMAMOTO KOSUKE |
分类号 |
H02P8/00 |
主分类号 |
H02P8/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|