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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But use a emitter resistor in the range of 4.
So stick with figure 2 in the datasheet. Jan 20, 1.
cny74 2 datasheet pdf ibm – PDF Files
This will show the voltage drop versus current. Jan 22, 6. It should be easy now to get a picture of the resistor wattage. Jan 23, The output to the Arduino input port will be at the point named Channel II.
You May Also Like: The second part of circuits work on 5VDC, because there are some TTL components like shift registers, microcontroller etc. And the higher current.
I guess a 4. Discussion in ‘ General Electronics Chat ‘ started by gerald81Jan 20, The LED will also have a voltage drop.
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Have you done any calculations on LEDs and transistors before? From the datasheet at page two. And you will no problem at all.
Ok, looking the figure 4, at 15mA there is about 1. Use anything from 1Kohm to to 10K. Do you already have an account? I will use a trimmer instead a resistor.
And cng74-2 is also important. Jan 22, Assume using figure 2 in the datasheet.
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From the datasheet I think a LED current in range mA should be enough to turn the transistor into saturation. Tales from 80s Tech: You can use figure 2. Find the voltage drop at 15 mA and take this into your calculations please.
But the transistor in the opto will be more or less full on with a LED current of 15mA. You do not need a value that is ohm.
Jan 20, 2. We see that the Saturation voltage, collector emitter will be at typical.
Your name or email address: Jan 22, 7. Hence the emitter resistor will control the current. There is a simple formula to calculate the two resistor for each optocoupler? I do not know were you got the nA from.