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I do not know were you got the nA from.
And you will no problem at all. Jan 22, Posted by rjjenkins in forum: Jan 22, 6.
Discussion in ‘ General Electronics Chat ‘ started by gerald81Jan 20, You have got how to calculate the LED series resistor correct. But the transistor in the cny74-4 datasheet will be more or less full on with a LED current of 15mA.
Jan 22, cny74-4 datasheet. Quote of the day. Have you done any calculations on LEDs and transistors before? The LED will also have a voltage drop. This will give you the LED voltage drop for a given current. Circular Touch Sensing with an EFM8 Microcontroller In this cny74-4 datasheet we will develop an algorithm for precisely locating a touch event that occurs somewhere on a circular cny74-4 datasheet sensor.
Jan 20, 2. I used this datasheet http: Jan 20, 1. And the higher current. By using a 4.
This will show the voltage drop versus current. You will have values well inside the spec of the opto. Jan cny74-4 datasheet, 7. So the current in a 4.
From the datasheet I think a LED current in range mA should be cny74-4 datasheet to turn the transistor into saturation. You do not need a datashwet that is ohm.
CNY Datasheet, PDF – Alldatasheet
Yes, my password is: Jan 22, 9. I would not have used a cny74-4 datasheet. You May Also Like: So stick with figure 2 in the datasheet. We see that the Saturation voltage, collector emitter will be at typical.
The higher Vce voltage drop. The voltage drop in the cny74-4 datasheet will be typical. And that is also important. Ok, looking the figure 4, at 15mA there is about 1.
Hello people, i’m new to electronic circuits. It is much the same The input is a LED and the output is a cny74-4 datasheet.
May 11, 5, 1, Jan 23, You can use figure 2. If you feel for it use two resistors in series to get close to the value. No need to have the transistor conducting max current. Jan 22, 4. Use anything from 1Kohm to to 10K.
Additional devices can be added in parallel cny74-4 datasheet support higher current demands. I cny74-4 datasheet use a trimmer instead a resistor. Posted by shetsachin in forum: There is a simple formula cny74-4 datasheet calculate the two resistor for each optocoupler?
The output to the Arduino input port will be at the point named Channel II. Your name or email address: It should be easy now to get a picture of the resistor wattage. Do you already have an account? From the datasheet at page two. In summary, hereafter you can see the formulas for cny74-4 datasheet wattage: Jan 16, 7 0.
If the opto is connected to some 5 volt logic gate or controller. I guess a 4.