发明名称 |
Booster circuit for electronic watch elements |
摘要 |
A booster circuit in an electronic watch having: hands for indicating time or a display portion such as a panel for displaying time digitally; a lamp for lighting the display portion by electroluminescence (EL element); and a sound generating portion for generating sound at an alarm setting time by vibration of a piezo-electric element. The booster circuit has a boosting member for driving the EL element and a boosting member for driving the piezo-electric element. These boosting members commonly use one coil.
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申请公布号 |
US4529322(A) |
申请公布日期 |
1985.07.16 |
申请号 |
US19820386639 |
申请日期 |
1982.06.09 |
申请人 |
SEIKO INSTRUMENTS & ELECTRONICS LTD. |
发明人 |
UEDA, MAKOTO |
分类号 |
H02M3/07;G04C10/00;G04G19/02;H05B33/08;(IPC1-7):G04C21/16 |
主分类号 |
H02M3/07 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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