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C datasheet, C circuit, C data sheet: COSMO – High Reliability Photocoupler,alldatasheet, datasheet, Datasheet search site for Electronic. DEMKO · FIMKO FI · NEMKO P · Datasheet. Legislation and Compliance. RoHS Certificate of Compliance. Statement of conformity. cosmo datasheet, cross reference, circuit and application notes in pdf format.

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The question is which dahasheet is the right testing method? Blumen on October 26, at 7: Mihai on July 16, at 5: Evis on November 12, at 7: Kannan E on July 19, at 9: Shahid on August 7, at 1: The nice thing about standards is that you have so many to choose from.

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.

For the triac pins 4 and 6with no voltage applied to the LED pins 1, 2check with an ohmmeter the datashete 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 than ohms when voltage is applied to the LED, and should remain low even if the voltage is no longer present datazheet the LED.


Good design is as little design as possible.

Thanks for the easy to follow explanation of how to rest an optocoupler. Any help would be apreciated.

K Datasheet(PDF) – COSMO Electronics Corporation

Please correct the pin numbers in image. Better check the datasheet for a test circuit. Mihai on July 19, at 3: You helped me understand how to use a tester on a optocoupler Thanks.

If csomo1010 LED is good then we should check the phototransistor, you could measure it with the ohmmeter just like the LED between pins cos,o1010 and 4 the emitter and collectorand you should get a high resistance value both ways if the phototransistor is good.

You have JavaScript disabled or are viewing the site on a device that does no support JavaScript. Hi, maybe a stupid question: Mihai on February 2, at 5: 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. The firehose by day and forty beers by night, An engineer may never sleep and still be just as bright. I was referring coemo1010 the junction resistance.

The alcohol never solved anything, but neither did water or milk. What if there is photo-Triac instead of Photo-transistor, How to test then? Mihai on March 18, at The LED is basically a diode, and it should not conduct both ways not get values on the meter both ways. Mihai on June 10, at Did you reffer to isolation resistance when you mention some phototransistors have high resistance?


How the optocoupler Type SFH acts when the positive line is open. 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.

I hope it helps. Thank you for the information. If the input is at 2V DC, then the output resistance should be around — ohms.

There is no law governing all things. Here is the web site.

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

With no voltage applied to the LED pins 1 and 2and with an open base pin 6there should be a high resistance between pins 5 and 4. I was wondering if i could just bypass the optcoupler and see if it works. Mihai on March 6, at 2: Siroos on October 14, dataeheet I appriciate… I tried that emprical method for H11B1 optocoupler.

For response time or frequency response data, check the datasheet. These information are very good indeed. Mohamed on October 9, at 9: Hi, Both methods are correct. Wade on February 5, at 9: Here I want to show you how to check if an optocoupler is working.