发明名称 |
I.C. Alarm signal generator |
摘要 |
A yelping alarm signal generator has a current controlled audio oscillator with a feedback loop around it that produces a control current that is a direct function of the oscillation frequency so that only one capacitor external to the integrated circuits is required.
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申请公布号 |
US4389638(A) |
申请公布日期 |
1983.06.21 |
申请号 |
US19810307057 |
申请日期 |
1981.09.30 |
申请人 |
SPRAGUE ELECTRIC COMPANY |
发明人 |
GONTOWSKI, JR., WALTER S. |
分类号 |
G08B3/10;(IPC1-7):G08B3/00 |
主分类号 |
G08B3/10 |
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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