发明名称 |
Feedback circuit for a display sign and method |
摘要 |
A feedback circuit for a display sign has a number of lights. A resistor is coupled in series with the lights. A voltage measuring circuit is coupled to the resistor.
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申请公布号 |
US7602305(B2) |
申请公布日期 |
2009.10.13 |
申请号 |
US20050274647 |
申请日期 |
2005.11.15 |
申请人 |
SKYLINE PRODUCTS, INC. |
发明人 |
LINDSAY CHARLES LEE;BUSH CHARLES HUNTER |
分类号 |
G08B21/00 |
主分类号 |
G08B21/00 |
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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