The log transmission circuit of LED signals

Published:2011/5/21 6:08:00 Author:Borg | Keyword: log transmission, LED signals | From:SeekIC

The figure is a transmission circuit of shifting D/A with LED. The circuit is to do log transmission to VD2 photo-current in the tested area, and the current is delivered to distant equipment in terms of dual-line currents. RP1 is used to set the intermediate range which is to be tested, and the temperature nature of the transformation coefficient is compensated by R5.



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