Electronic Manufacturer, Part no, Datasheet, Electronics Description. NEC, PSD-1, DIP PHOTOCOUPLER OPERATING AMBIENT TEMPERATURE °C. The description of this item has been automatically translated. If you have any questions, please feel free to contact us. Optocoupler D. NEW AND. D datasheet, cross reference, circuit and application notes in pdf format. Abstract: nec D photocoupler PSDL-1 PSDL-1Y-V-A D .

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Thank you for the information. The alcohol never solved anything, but neither did water or milk. There is no law governing all things. Here is the web site.

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Mihai on February 2, optocouppler 5: I have two circuits. Better check optocoupldr datasheet for a test circuit. If the O;tocoupler 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.

It depends on the 2nd circuit you are supplying the voltage on collector of the optocoupler, optocoupler will never transfer the voltages of circuit1 to circuit2, it decreases resistance between your supplied voltages at collector and emitter on the input of circuit2. Leave a Reply Cancel reply Your email address will not be published. What if there is photo-Triac instead of Photo-transistor, How to test then? You helped me understand how to use a tester on a optocoupler Thanks.


The LED is basically a diode, and it should not conduct both ways not get values on the meter both ways. Any help would be apreciated.

10PCS Free shipping R2561D R 2561D DIP4 new 1 Optocoupler

The purpose of an optocoupler is to transfer signals from one circuit to another yet keep them galvanically isolated. 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 referring to the junction resistance.

Mihai on March 6, at 2: Wade on February 5, at 9: These information are very good indeed.

How to test an optocoupler – AntiMath

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 July 16, at 5: 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 appriciate… I tried that emprical method for H11B1 optocoupler. Thanks for the easy to follow explanation of how to rest an optocoupler.

Please correct the pin numbers in image. Thank you for the information… and i have one more clarifications.

Mihai on March 18, at Your email address will not be published. For response time or frequency response data, check the datasheet.

Blumen on October 26, at 7: Mihai on July 15, at 8: Mihai on June 10, at 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.


Mihai on July 19, at 3: Evis on November 12, at 7: Sarfaraz on November 8, at 9: Hi, Both methods are correct.

Sunil on March 3, at 3: The question is which one is the right testing method? You have JavaScript disabled or are viewing the site on a device that does no support JavaScript.

Muhammad Akhlaq on May 30, at 9: An optocoupler or optoisolatoris a device that contains a light-emitting diode LED 2561s a photosensor photodetector, such as a photoresistor, a photodiode, a phototransistor, …etc. Arvind Vijaykumar on June 1, at Sanu sebastian on August 19, 2516d Mihai on October 28, at I hope it helps. The firehose by day and forty beers by night, An engineer may never sleep and still be just as bright.

Some features may not work properly. I like the way you explain things.

Michael on January 21, at 3: But what i want to mention is there is a optocouplsr testing circuit on the datasheet of H11B1. When Firefox stops working, you fire up Chrome. Here I want to show you how to check if an optocoupler is working.