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Blumen on October 26, at 7: How can i test them?

Thx and best regards, Geert. In the datasheet example, a 10V DC is connected at the output, so that one can check the variation in voltage with a voltmeter or an oscilloscope.

Learn how your comment data is processed. Sanu sebastian on August 19, at The firehose by day and forty beers by night, An engineer may never sleep and still be just as bright.

Shahid on August 7, at 1: Please correct the pin numbers in image. Arvind Vijaykumar on June 1, at With no voltage applied to the LED clsmo1010 1 and 2and with dataasheet open base pin 6there should be a high resistance between pins 5 and 4.


Sarfaraz on November 8, at 9: These information are very good indeed. Sunil on March 3, at 3: 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. Mihai on October 28, at cosmo10110 Wade on February 5, at 9: Mihai on July 16, at 5: I like the way you explain things.

K Datasheet(PDF) – COSMO Electronics Corporation

I appriciate… I tried that emprical method for H11B1 optocoupler. The LED is cosmo10010 a diode, and it should not conduct both ways not get values on the meter both ways.

If i give the input of V DC what will be the response of this optocoupler…. Better check the datasheet for a test circuit.

cosmo datasheet & applicatoin notes – Datasheet Archive

Geert Van Droogenbroeck on November cksmo1010, at I hope it helps. 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. Emprical method you mention above or the testing circuit on the datasheet of H11B1?

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 dataasheet the phototransistor is good.


The optocoupler is FL C F, should i just join the emittor and collector pins?

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

I have two circuits. Mihai on February 2, at 5: Thanks for the easy to follow explanation of how to rest an optocoupler.

Thank you for the information… and i have one more clarifications. Mihai on February 6, at For response time or frequency response data, check the datasheet.

Did you reffer to isolation resistance when you mention some phototransistors have high resistance? Leave a Reply Cancel reply Your email address will not be published. The question is which one is the right testing method? Mihai on March 6, at 2: 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.