E absolute maximum ratings at 25°C free-air temperature (unless otherwise noted)†. Input-to-output peak voltage (8-ms half sine wave): 4N kV. standard single channel phototransistor couplers. These families include the 4N35, 4N36, 4N37, 4N38 couplers. Each optocoupler consists of. Cosmo 4n35 optoisolator for DC voltage measuring. Hi all, I’ve encountered a problem. I’ve tried to set the input current to the opto by using 5V.

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Is there any cheap optoisolator that you guys can recommend? Cosmo 4n35 optoisolator for DC voltage measuring Hi Keith, here is my circuit, Post added at But it is quite expensive at 11usd per unit.

I guess there’s no substitute for the hcpl eh?

Thanks Post added at Cosmo 4n35 optoisolator for DC voltage measuring. PNP transistor not working 2. ModelSim – How to force a struct type written in SystemVerilog? Synthesized tuning, Part 2: A crude option if you just cksmo a rough voltage measurement would be to correct the measured value.


The time now is How do you get an MCU design to market quickly? Choosing IC with EN signal 2. I don’t mind if the output voltage is not same as the input, but if it’s proportional, I can mend the voltage reading by inserting a constant in the microcontroller. AF modulator in Transmitter what is the A?

cosmo 4N35 datasheet & applicatoin notes – Datasheet Archive

So you circuit is working correctly – although maybe not how you want it to. Distorted Sine output from Transformer 8. Another option is to use a micro which has 8 adc inputs measure it and send it thro the opto.

I am not sure it would be much simpler than using a to turn it into a pulse train though. Hierarchical block is unconnected 3.

Equating complex number interms cossmo the other 6. Originally Posted by nandhu I think I will just let the ADC port get the signals directly from the contacts.


How reliable is it? Cosmo 4n35 optoisolator for DC voltage measuring I can only coamo at your circuit. It would be useful to know what you are trying to measure – where the source voltage comes from.

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Looking for a sensor for measuring V AC 9. I need to use 8 pieces lol.

Opto 4n35 for voltage sensing? Similar Threads use of a optoisolator in a power supply 4N35 fairchild 2. PV charger battery circuit 4. What is the function of TR1 in this circuit 3.

Cosmo 4n35 optoisolator for DC voltage measuring Yes, that is what I thought. If that doesn’t make sense then maybe it will help to post your circuit, Keith. But I think it would be complicated as I would need 8 timer and 8 4n35 for my project.

Cosmo 4n35 optoisolator for DC voltage measuring Cismo you have a high voltage available to drive the LED then the accuracy will improve although you will dissipate more power in the LED drive resistor.

It’s just a prototype.