Optoelectronic coupler
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United States of America Patent
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Sep 20, 2005
Grant Date -
Mar 18, 2004
app pub date -
Jun 16, 2003
filing date -
Jun 25, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optoelectronic coupler includes two photodiodes and an optic light guide, where one of the two photodiodes serves as the transmitting diode and the other as the receiving diode and the light guide serves to guide the light emitted by the transmitting diode to the receiving diode. The transmitting diode and the receiving diode are mounted on a circuit board at a distance from each other and the light guide is constituted of a plastic or glass element mounted on the same circuit board. This arrangement provides for a simple optoelectronic coupler design that permits safe operation even from the perspective of explosion protection.
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