发明名称 |
Signal corrected optocoupled device |
摘要 |
A remote gain controlled optocoupled device is disclosed utilizing a DC reference voltage in the output section to compensate for variations in the optocoupling characteristics of the circuit. The DC voltage level output of the photodetector, which is a function of the light transfer characteristics of the circuit, is compared to a remotely controlled reference DC level. The output AC signal level, which substantially tracks the DC voltage output, is gain adjusted under control of the compared DC voltage levels.
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申请公布号 |
US4190747(A) |
申请公布日期 |
1980.02.26 |
申请号 |
US19780893795 |
申请日期 |
1978.04.05 |
申请人 |
BELL TELEPHONE LABORATORIES INC |
发明人 |
FEINER, ALEXANDER;LIU, CHAO KAI;WAABEN, SIGURD G |
分类号 |
H04B1/58;H04B10/00;H04M1/00;(IPC1-7):H04B1/58;H04B9/00 |
主分类号 |
H04B1/58 |
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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