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CNY74-2 DATASHEET PDF

CNY/ TELEFUNKEN Semiconductors. Rev. A2, Dec 1 (9). Multichannel Optocoupler with Phototransistor Output. Description. The CNY and. CNYH includes 2 isolator channels. • CNYH includes 4 isolator channels. • Isolation test voltage VISO = VRMS. • Test class 25//21 DIN 40 Features. • CNYH includes 2 isolator channels. • CNYH includes 4 isolator channels. • Isolation test voltage VISO = VRMS.

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This will give you the LED voltage drop for a given current.

No need to have the transistor conducting max current. Have you done any calculations on LEDs and transistors before? Take a look once more on figure 5. Jan 22, 9. So the current in a 4. Jan 20, 1. You do not need a value that is ohm.

Tales from 80s Tech: But the transistor in the opto will be more or less full on with a LED current of 15mA.

You May Also Like: And you will no problem at all. So stick with figure 2 in the datasheet.

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CNY74-4 Optocoupler

Jan 22, 6. It is much the same The input is a LED and the output is a transistor. Jan 22, 4. Jan 24, I guess a 4. Posted by rjjenkins in forum: If the opto is connected to some 5 volt logic gate or controller.

From the datasheet at page two. Discussion in ‘ General Electronics Chat ‘ started by gerald81Jan 20, Your name or email address: Jan 22, 5.

This will show the voltage drop versus daatasheet. Go for a LED current equal to 15mA. The output to the Arduino input port will be at the point named Channel II. And the higher current. I would not have used a trimmer.

In summary, hereafter you can see the formulas for resistors wattage: From the datasheet I think a LED current in range mA should be enough to turn the transistor into saturation. Yes, my password is: Optocoupler fails after month. You have got how to calculate the LED series resistor correct. I do not know were you got the nA from. I will use a trimmer instead a resistor. Jan 16, 7 0. Use anything from 1Kohm to to 10K.

CNY Datasheet(PDF) – TEMIC Semiconductors

datahseet Find the voltage drop at 15 mA and take this into your calculations please. Assume using figure 2 daasheet the datasheet. Jan 22, 7. We see that the Saturation voltage, collector emitter will be at typical.

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No, create an account now. Posted by shetsachin in forum: Keep your kids engaged and get them excited about electrical engineering with these fantastic sites. If you feel for it use two resistors in series to get close to the value. By using a 4.

But use a emitter resistor in the range of 4. Jan 22, 8. The higher Vce voltage drop.

CNY Optocoupler | All About Circuits

Jan 23, cn7y4-2 Do you already have an account? Hello people, i’m new to electronic circuits. May 11, 5, 1, Ok, looking the figure 4, at 15mA there is about 1.

There is a simple formula to calculate the two resistor for each optocoupler? Jan 22,