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But what i want to mention is there is a different testing circuit on the datasheet of H11B1.

cosmo j 18 c datasheet & applicatoin notes – Datasheet Archive

There is no law governing all things. So when current flows through the LED, the triac is triggered and it conducts both ways until the main current drops below a certain level. Cosmo10110 check the datasheet for a test circuit. Mihai on February 2, at 5: These information are very good indeed.

Siroos on October 14, at Good design is as little design as possible. I appriciate… I tried that emprical method for H11B1 optocoupler.


Sunil datasheey March 3, at 3: I use analog ohmmeter with 2 internal batteries, 3V to turn on LED pins 1 and 2and digital V-metar on diode tester mode on transistor side. Thanks darasheet the easy to follow explanation of how to rest an optocoupler. Thank you for the information. An optocoupler or optoisolatoris a device that contains a light-emitting diode LED and a photosensor photodetector, such as a photoresistor, a photodiode, a phototransistor, …etc. I was wondering if i could just bypass the optcoupler and see if it works.

atx power supply datasheet baz1670347e, cosmo/1010/817/d36/c

Leave a Reply Cancel reply Your email address will not be published. Pls let me know. Blumen on October 26, at 7: Daasheet Vijaykumar on June 1, at I like the way you explain things. What if there is photo-Triac instead of Photo-transistor, How to test then?

Mihai on July 19, at 3: The nice thing about standards is that you have so many to choose from. Mihai on July 16, at 5: Shahid on August 7, at 1: If the input is catasheet 2V DC, then the output resistance should be around — ohms. I only have a digital multi meter.


How the optocoupler Type SFH acts when the positive line is open. Please correct the pin numbers in image.

cosmo datasheet & applicatoin notes – Datasheet Archive

Any help would be apreciated. If you get a value either way or no value at all, then certainly there is a problem with the LED, and you should find another optocoupler.

Thx and best regards, Geert. In my example an ohmmeter is connected at the output, in order to see the change in resistance. Some features may not work properly. Mihai on September 17, at Hi, maybe a stupid question: Viliam on September 7, at 1: