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Additional information about this material, like producer contact address, etc. I only have a digital multi meter. I like the way you explain things.
TCET1108 OPTOCOUPLER PHOTOTRANS 260% 4DIP TCET1108 1108 T1108 ET1108
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. An optocoupler or optoisolatoris a device that contains a light-emitting diode LED and datashete photosensor photodetector, such as a photoresistor, a photodiode, a phototransistor, …etc.
Mohamed on October 9, at 9: Michael on January 21, at 3: Learn how your comment data is processed. Arvind Vijaykumar on June 1, at These information are very good indeed.
Sunil on March 3, at 3: Hi, The MOC, is a phototriac coupler, meaning that instead of the phototransistor, it has a phototriac, which is basically a triac with the gate driven by the LED. I have two circuits. You helped me understand how to use a tester on a optocoupler Thanks.
Mihai on February 6, at In my example an ohmmeter is connected at the output, in order to see the change in resistance. Hi, First of all thanks for sharing such an useful information. The purpose of an optocoupler is to transfer signals from one circuit to another yet keep them galvanically isolated. Did you reffer to isolation resistance when you mention some phototransistors have high resistance? I appriciate… I tried that emprical method for H11B1 optocoupler.
For the triac pins 4 and et110with no voltage applied to the LED pins 1, 2check with an ohmmeter the resistance between pins 4 and 6, it should be high open circuit or at least greater than 1 megohm both ways, and this resistance should go down lower datasheft ohms when voltage is applied to the LED, daatsheet should remain low even if the voltage is no longer present on the LED.
I guess, it should work mostly the same as a normal triac. 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.
Thank you for the information. Material Data Center offers a comprehensive plastics database, calculation tools, CAE interfaces, a literature database and an application database.
I hope it helps. The question is which one is the right testing method? Siroos on October 14, at Mihai on September 17, at Mihai on February 2, at 5: Nupra on March 18, at 6: If the LED is good then we should check the phototransistor, you could measure it with the ohmmeter just like the LED between pins 3 and 4 the emitter and collectorand you should get a high resistance value both ways if the phototransistor is good.
Mihai on March 18, at Good design is as little design as possible. Kannan E on July 19, at 9: Viliam on September 7, at 1: Wade on February 5, at 9: When Firefox stops working, you fire up Chrome.
Thanks for the easy to follow explanation of how to rest an optocoupler. Any use of this information falls under the rules of our disclaimer.
ET pdf Datasheet P1 Part Num IC-ON-LINE
Copyright laws are applicable for the content of this system. Geert Van Droogenbroeck on November 18, at Mihai on June 10, at I was wondering if i could just bypass the optcoupler and see if it works. Muhammad Akhlaq on May 30, at 9: The nice thing about standards is that you have so many to choose from. Evis on November 12, at 7: Check here, which other Etoma datasheets, application examples or technical articles are available in Material Data Center.
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If you get a value either satasheet or no value at all, then certainly there is a problem with the LED, and you should find another optocoupler. This site uses Akismet to reduce spam.