Position: Index > Unclassified >

Stable optocoupler

2017-09-04 12:25  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


A circuit stabilizes the current-transfer ratio (CTR) of an optically coupled isolator used as a linear transducer. The optocoupler produces a voltage output that is proportional toa€”but electrically isolated froma€”the voltage input. However, the output voltage is directly affected by changes in the CTR, and the CTR can change substantially with temperature and current. To a lesser extent the CTR changes with time over the life of the optocoupler. The circuit employs a feedback circuit containing a second optocoupler.
Stable optocoupler

The feedback signal tends to oppose changes in the overall CTR.



Reprinted Url Of This Article:
http://www.next.gr/sens-detectors/optical/stable-optocoupler-l12201.html