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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And you will no problem at all.

TEMIC – datasheet pdf

Jan 22, 3. Jan 22, 6. Jan 22, 5.

Jan 22, 8. Hence the emitter resistor will control the current. Yes, my password is: As regards the resistance of the transistor, which logic do i use? You do not need a value that is ohm. Optocoupler fails after month. But the transistor in the opto will be more or less full on with a LED current of 15mA.

Posted by shetsachin in forum: Cny742 of the day.

cny74 2 datasheet pdf ibm

It should be easy now to get a picture of the resistor wattage. Ok, looking the figure 4, at 15mA there datasgeet about 1. Take a look once more on figure 5. Jan 24, No need to have the transistor conducting max current.


Use anything from 1Kohm to to 10K. There is a simple formula to calculate the two resistor for each optocoupler? Have you done any calculations on LEDs and transistors before?

I do not know were you got the nA from. This will give you the LED voltage drop for a given current.

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Jan 22, 7. You have got how to calculate the LED series resistor correct. And the higher current. If the opto is connected to some 5 volt logic gate or controller. Your name or email address: Assume using figure 2 in the datasheet.

You May Also Like: You can use figure 2. The higher Vce voltage drop. So the current ddatasheet a 4. If you feel for it use two resistors in series to get close to the value.

From the datasheet at page two. Tales from 80s Tech: I used this datasheet http: Jan 22, 9. And that is also important.

CNY Datasheet(PDF) – TEMIC Semiconductors

I will use a trimmer instead a resistor. The voltage drop in the transistor will be typical. OptoCoupler Posted by mpuvdd in forum: The output to the Arduino input port will be at the point named Channel II. From the datasheet I think a LED current in range mA should be enough to turn dataasheet transistor into saturation.


May 11, 5, 1, This will show the voltage drop versus current. Jan 22, I guess a 4. But use a emitter resistor in the range of 4. Keep your kids engaged and get them excited about electrical engineering with these fantastic sites.

Jan 20, 2. Hello people, i’m new to electronic circuits. Jan 23, It is much the same The input is a LED and the output is a transistor.

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By using a 4.