Sorry for asking such a basic question, but i just want to be 1000% sure before i design it into my pcb and find out its not right.
I basically have a 5V source, that i want to be isolated, but i want to be able to trigger a pin on the teensy (3.5).
Normally ive seen images on the net where the optoisolators output is taken from the collector side of the transistor, but this inverts the logic.
So im considering wiring it like this. Taking my output from the emitter side. Im not sure if i needed the 1k resistor on the collector side, but is it good practice to do so?
The 10k works as my week pull down when the optoisolator is off, but also allows me to get a voltage on the output at the emitter.
ive wired it up on a breadbord and i get 0.0003v when the isolator is off and 2.95v when the isolator is triggered. Would this be enough to trigger the teensy? Or does anyone recommend a better way to do this?
The optoisolator is a LTV-356T.
Sorry again for such a basic question
Trev
I basically have a 5V source, that i want to be isolated, but i want to be able to trigger a pin on the teensy (3.5).
Normally ive seen images on the net where the optoisolators output is taken from the collector side of the transistor, but this inverts the logic.
So im considering wiring it like this. Taking my output from the emitter side. Im not sure if i needed the 1k resistor on the collector side, but is it good practice to do so?
The 10k works as my week pull down when the optoisolator is off, but also allows me to get a voltage on the output at the emitter.
ive wired it up on a breadbord and i get 0.0003v when the isolator is off and 2.95v when the isolator is triggered. Would this be enough to trigger the teensy? Or does anyone recommend a better way to do this?
The optoisolator is a LTV-356T.
Sorry again for such a basic question
Trev