December 25, 2018

SHARP PC | Optocoupler; THT; Channels:1; Out: transistor; 5kV; DIP4 – This product is available in Transfer Multisort Elektronik. Check out our wide range of . Here I want to show you how to check if an optocoupler is working. So I’ve chosen one of the most commonly used optocouplers (PC – 4 pins) for the. Space distance. PC PCF. 8mm or more. 8mm or more. Symbol. Ratings. Unit. Input. IF. mA. IFM. 1 Distance Photocoupler. 1. Conform to European.

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Arvind Vijaykumar on June 1, at However, there might be problems with the other parameters of this optocoupler. Sanu sebastian on August 19, at I have a PC optocoupler by Sharp lying around, so I’d like to use it optocouple the circuit.

First of all thanks for sharing such an useful information. 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 have two circuits.

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Oct 17 ’15 at 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 input uses 5V. With the Arduino’s Schmitt trigger inputs, and a portion of luck, you might actually be able to get the signal out, so you might as well try it.

The optocoupler is FL C F, should i just join the emittor and collector pins? Did you reffer to isolation resistance when you mention some phototransistors have high resistance?


I guess, it should work mostly the same as a normal triac. I was wondering if i could just bypass the optcoupler and see if it works.

Good design is as little design as possible. Hi, Both methods are correct.

Learn how your comment data is processed. How can i test them? Im trying to connect a MIDI input cable to an arduino. The firehose by day and forty beers by night, An engineer may never sleep and still be just as bright. If the input is at 2V DC, then the output resistance should be around — ohms.

The question is which one is the right testing method? Mihai on November 20, at 1: Michael on January 21, at 3: Your email address will pd123 be published. Pls let me know. Sunil on March 3, at 3: In my example an ohmmeter is connected at the output, in order to see the change in resistance. What are the midi in voltage levels?

How to test an optocoupler – AntiMath

For the triac pins 4 and 6with no voltage applied to the LED pins 1, 2check with an ohmmeter the resistance 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 on the LED.

There is no problem with the absolute maximum ratings. Opptocoupler Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. If i give the input of V DC what will be the response of this optocoupler…. Mihai on March 6, at 2: Geert Van Droogenbroeck on November 18, at Shahid on August 7, at 1: 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 optoccoupler ways if the phototransistor is good.


Blumen on October 26, at 7: 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. The MIDI specification calls for a high-speed optocoupler.

This site uses Akismet to reduce spam. The purpose of an optocoupler is to transfer signals from one circuit to another yet keep them galvanically isolated.

SHARP – datasheet pdf

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. Hi, maybe a stupid question: 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.

Viliam on September 7, at 1: