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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CNY datasheet & applicatoin notes – Datasheet Archive

Do you already have an account? And you will no problem at all. May 11, 5, 1, Jan 20, 2. By using a 4. This will show the voltage drop versus current. Jan 20, 1.

You do not need a value that is ohm. Jan 22, Yes, my password is: From the datasheet at page two.

But the transistor in the opto will be more or less full on with a LED current of 15mA. Fny74-2 anything from 1Kohm to to 10K.

The LED will also have a voltage drop. From the datasheet I think a LED current in range mA should be enough to turn the transistor into saturation. Quote of the day. Jan 22, 9. Your name or email address: Ok, looking the figure 4, at 15mA there is about 1. OptoCoupler Posted by mpuvdd in forum: And the higher current. Discussion in ‘ General Electronics Chat ‘ started by gerald81Jan 20, Go for a LED current equal to 15mA.


Jan 24, Have you cnyy74-2 any calculations on LEDs and transistors before? Replace the nA with the current determined cny4-2 the transistor Vce which you set correct to 0.

So the current in a 4. I will use a trimmer instead a resistor. I guess a 4. You will have values well inside the spec of the opto. Tales from 80s Tech: Jan 22, 3. I used this datasheet http: Find the voltage drop at 15 mA and take this into your calculations please.

It is much the same The input is a LED and the output is a transistor. Posted by rjjenkins in forum: I do not know were you got the nA from. The higher Vce voltage drop. Jan 22, 8. Assume using figure 2 in the datasheet.

CNY Datasheet(PDF) – TEMIC Semiconductors

There is a simple formula to calculate the two resistor for each optocoupler? And that is also important.

The output to the Arduino input port will be at the point named Channel II. Take a look once more on figure 5. Optocoupler fails after month. Jan 22, 4. If you feel for it use two resistors in series to get close to the value. If the opto is connected to some 5 volt logic gate or controller. Posted by shetsachin in forum: It should be easy now to get a picture of the resistor wattage. Jan 22, 7. No need to have the transistor conducting max current.


CNY74-4 Optocoupler

No, create an account now. In summary, hereafter you can see the formulas for resistors wattage: So stick with figure 2 in the datasheet. This will give you the LED voltage drop for a given current.