817A DATASHEET PDF

  • June 12, 2019

Lite-On LTVA: available from 21 distributors. Explore Optoelectronics on Octopart: the fastest source for datasheets, pricing, specs and availability. Photocoupler. Product Data Sheet. LTV/ / . (M, S, S-TA, S-TA1, S-TP). Series. Spec No.:DS Notice The content of data sheet is subject to change without prior notice. In the absence of confirmation by device specification sheets, SHARP takes no.

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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 datasheett at collector and emitter on the input of circuit2.

817a datasheet pdf

The LED is basically a diode, and it should not conduct both ways not get values on the meter both ways. These information are very good indeed. Blumen on October 26, at 7: Geert Dqtasheet Droogenbroeck on November 18, at The question is which one is the right testing method? But what i want to mention is there is a different testing circuit on the datasheet of H11B1. Ado on November 14, at Sunil on March 3, at 3: Arvind Vijaykumar on June 1, at Better check the datasheet for a test circuit.

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I was wondering if i could just bypass the optcoupler and see if it works. Some features may not work properly.

Any help would be apreciated. Muhammad Akhlaq on May 30, at 9: Pls let me know. Hi, First of all thanks for sharing datashewt an useful information. Thank you for the information… and i have one more clarifications.

Step 2 If the LED is good then we should check the phototransistor, you could datawheet 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.

The purpose of an optocoupler is to transfer signals from one circuit to another yet keep them galvanically isolated. If the input is at 2V DC, then the output resistance should be around — ohms. I was referring to the junction resistance.

Thx and best regards, Geert.

Mihai on February 2, at 5: 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 6, at 2: What if there is photo-Triac instead of Photo-transistor, How to test then? Mihai on July 16, at 5: 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.

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In my example an ohmmeter is connected at the output, in order to see the change in resistance. The firehose by day and forty beers by night, An engineer may never sleep and still be just as bright. Wade on February 5, at 9: Mihai on February 6, at Mihai on October 28, at I have two circuits.

Mihai on March 18, at Leave a Reply Cancel reply Your email address will datasheet be published.

How can i test them? First of all thanks for sharing datasgeet an useful information. I appriciate… I tried that emprical method for H11B1 optocoupler. For response time or frequency response data, check the datasheet.

A Datasheet(PDF) – STMicroelectronics

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The nice thing about standards is that you have so many to choose from. Thanks for the easy to follow explanation of how to rest an optocoupler. Here is the web site. Shahid on August 7, at 1: