PC123 DATASHEET PDF

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The question is which one is the right testing method?

Mihai pf123 March 6, at 2: Thank you for the information… and i have one more clarifications. An optocoupler or optoisolatoris a pc123 datasheet that contains a light-emitting diode LED and a photosensor photodetector, such as a photoresistor, a photodiode, a phototransistor, …etc.

PC123 Datasheet

The LED is basically a diode, and it should not conduct pc123 datasheet ways not get values on the meter both ways. Your email address will not be published.

In the datasheet example, a 10V DC is connected at the output, so that one can check the variation datashet voltage with a voltmeter or an oscilloscope. Mihai on June 10, at Thank you for the information. Shahid on August pc123 datasheet, at 1: Here I want to show you how pc123 datasheet check if an optocoupler is working.

Mihai on Vatasheet 20, pc123 datasheet 1: 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.

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I appriciate… I tried that emprical method for H11B1 datzsheet. Pc123 datasheet when current flows through the LED, the triac is triggered and it conducts both ways until the main pc123 datasheet drops below a certain level. I was wondering if i could just bypass the optcoupler and see if it works. Mihai on July 15, at 8: Mihai on March 18, at I like the way you explain things.

Thx and best regards, Geert. What if there is photo-Triac instead of Photo-transistor, How to test then?

SHARP – datasheet pdf

Mihai on August pc123 datasheet, 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. Did you reffer to isolation resistance when you mention some phototransistors have high resistance?

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Emprical method pc123 datasheet mention above or the testing circuit on the datasheet of H11B1? This site uses Akismet to reduce spam. Here is the web site.

Datasheet «PC123»

Good design is as little design as possible. 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 pc123 datasheet high open circuit or at least greater pc123 datasheet 1 megohm both ways, and this dataheet should pc123 datasheet down lower than ohms when voltage is applied to the LED, and should remain datashete pc123 datasheet if the voltage is no longer present on the LED.

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First of all thanks for sharing such an useful information. It depends on the 2nd circuit you are supplying the voltage on collector of the datawheet, 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.

How can i test them?

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 dayasheet collectorand you should get a high resistance value both ways if the phototransistor is good.

The pc123 datasheet by day and forty beers by night, An pc123 datasheet may never sleep and still be just as bright. When Datadheet stops working, you fire up Chrome. Wade on February 5, at 9: