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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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Posted by rjjenkins in forum: You have got cnny74-2 to calculate the LED series resistor correct. Your name or email address: Hence the emitter resistor will control the current. And the higher current.

Jan 16, 7 0. Use anything from 1Kohm to to 10K. As regards the resistance of the transistor, which logic do i use? Posted by shetsachin in forum: The voltage drop in the transistor will be typical. It is much the same The input is a LED and the output is a transistor. You May Also Like: Have you done any calculations on LEDs and transistors before?


CNY datasheet & applicatoin notes – Datasheet Archive

In summary, hereafter you can see the formulas for resistors wattage: I guess a 4. You can use figure 2. The LED will also have a voltage drop.

We see that the Saturation voltage, collector emitter will be at typical. From the datasheet I think a LED current in range mA should be enough to turn the transistor into saturation. Hello people, i’m new to electronic circuits.

CNY74-4 Optocoupler

So stick with figure 2 in the datasheet. If the opto is connected to some 5 volt logic gate or controller. Take a look once more on figure 5. Replace the nA with the current determined by the transistor Vce which you set correct to 0. Jan 22, 5.

Optocoupler fails after month. This will show the voltage drop versus current. No, create an account now. The output to the Arduino input port will be at the point named Channel II.

【CNY742/CNY744 VISHAY】Electronic Components In Stock Suppliers in 2018【Price】【Datasheet PDF】USA

Tales from 80s Tech: Xny74-2 22, 8. Keep your kids engaged and get them excited about electrical engineering with these fantastic sites. I used this datasheet http: Go for a LED current equal to 15mA. Jan 22, 6. Find the voltage drop at 15 mA and take this into your calculations please.


I will use a trimmer instead a resistor. Do you already have an account? From the datasheet at page two.

Jan 22, 7. You will have values well inside the spec of the opto. If you feel for it use two resistors in series to get close to the value. The second part of circuits work on 5VDC, because there are some TTL components like shift registers, microcontroller etc. Jan 24, So the current in a 4.

cny74 2 datasheet pdf ibm – PDF Files

I do not know were you got the nA from. Jan 20, 2. Discussion in ‘ General Electronics Cy74-2 ‘ started by gerald81Jan 20, OptoCoupler Posted by mpuvdd in forum: