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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Quote of the day. And you will no problem at all. By using a 4.
Jan 22, 4. This will show the voltage drop versus current. Do you already have an account?
CNY Optocoupler | All About Circuits
Ok, looking the figure 4, at 15mA there is about 1. Discussion in ‘ General Electronics Chat ‘ started by gerald81Jan 20, Jan 16, 7 0. Hello people, i’m new to electronic circuits. No, create an account now. Find the voltage drop at 15 mA and take this into your calculations please. cnh74-2
And that is also important. You dstasheet use figure 2. If you feel for it use two resistors in series to get close to the value. Keep your kids engaged and get them excited about electrical engineering with these fantastic sites. If the opto is connected to some 5 volt logic gate or controller.
OptoCoupler Posted by mpuvdd in forum: Your name or email address: Jan 20, 2. Assume using figure 2 in the datasheet. This will give you the LED voltage drop for a given current. Jan 22, 3. Have you done any calculations on LEDs and transistors before? Yes, my password is: It is much the same The input is a LED and the output is a transistor.
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Use anything cnj74-2 1Kohm to to 10K. Optocoupler fails after month. You May Also Like: There is a simple formula to calculate the two resistor for each optocoupler? As regards the resistance of the transistor, which logic do i use? But the transistor in the opto will be more or less full on with a LED current of 15mA.
The LED will also have a voltage drop. Go for a LED current equal to 15mA. Tales from 80s Tech: But use a emitter resistor in the range of 4. You have got how to calculate the LED series resistor correct. I will use a trimmer instead a resistor. And the higher current.
CNY Datasheet(PDF) – TEMIC Semiconductors
No need to have the transistor conducting max current. Jan 24, Jan datasbeet, 7. From the datasheet I think a LED current in range mA should be enough to turn the transistor into saturation. Take a look once more on figure 5. Jan 20, 1.
Posted by rjjenkins in forum: Hence the emitter resistor will control the current. We see that the Saturation voltage, collector emitter will be at typical. The higher Vce voltage drop. I used this datasheet http: Jan 22, It should be easy now to get a picture of the resistor wattage.