817 OPTOCOUPLER DATASHEET PDF

Photocoupler s Features. 1. Current transfer ratio PC Anode mark. PC Internal connection diagram. PC PC PC PC PC PC 1. Notice The content of data sheet is subject to change without prior notice. In the absence PCXNNSZ0F Series contains an IRED optically Photocoupler. Dual-in-line package: LTV 1-channel type. LTV 2-channel type. LTV- 4-channel type. * Wide lead spacing package: LTVM: 1-channel type.

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Mihai on July 19, at 3: I hope it helps. Muhammad Akhlaq on May 30, at 9: The output will not get high as soon as the input logic is made low and vice versa. This will short the collector and emitter and hence the Logic Output voltage will become zero. Mihai on June 10, at Mihai on November 20, at 1: Mihai on March 18, at Emprical method you mention above or the testing circuit on the datasheet of H11B1?

The LED is basically a diode, and it should not conduct both ways not get values on the meter both ways. So when current flows through the LED, the triac is triggered and it conducts both ways until the main current drops below optocouplerr certain level. If the input is at 2V DC, then the output resistance should be around — ohms.

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But what i want to mention is there is datasheey different testing circuit on the datasheet of H11B1. Learn how your comment data is processed.

Mohamed on October 9, at 9: Here is the web site. I have two circuits. Any help would be apreciated.

PC817 (EL817)

The alcohol never solved anything, but neither did water or milk. Sarfaraz on November 8, at 9: Sunil on March 3, at 3: Mihai on October 28, at I like the way you explain things. Mihai on July 15, at 8: The nice thing about standards is that you have so many to choose from.

The complete working can also be understood form the GIF file above.

The digital signal given to the IR LED will be reflected on the transistor but there will be no hard electrical connection between the two. Connected to ground 3 Emitter Emitter pin of transistor.

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. The purpose of an optocoupler is to transfer signals from one circuit to another yet keep them galvanically isolated. This comes in very handy when you are trying to isolate a noisy signal from your digital electronics, so if you are looking for an IC to provide optical isolation in your circuit design then this IC might be the right choice for you.

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Shahid on Optocoup,er 7, at 1: Viliam on September 7, at 1: Geert Van Droogenbroeck on November 18, at This site uses Akismet to reduce spam.

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 optocoupler is FL C F, should i just join optocoupoer emittor and collector pins? I appriciate… I tried that emprical method for H11B1 optocoupler.

PC (EL) [] : Sunrom Electronics/Technologies

Step 2 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. Evis on November 12, at 7: Here I want to show you how to check if an optocoupler is working.

Michael on January 21, at 3: