How on earth can I check a PC817 Optocoupler???!
As a lame beginner, I'm thinking if connecting it in series with a 330 Ohm Res. and supplying it 5v then the relay part should contact and one should be to check it with continuity or not?
There is also the below explanation from another forum that I cannot quite understand neither!
any help appreciated.
from another forum:
"I'll tell you my method
1. Find the input if you barely don't know which one is input.
2. Use avometer as ohmmeter to check which one is short for each pins.
3. Ohmmeter is work as current source so when you find short one then it is the pair of input pin.
4. Power up the input with series resistor.
5. Measure the output which one is short so you now know how the current flow.
6. When you power off input that output pins become open.
Your optocoupler is work.
"
As a lame beginner, I'm thinking if connecting it in series with a 330 Ohm Res. and supplying it 5v then the relay part should contact and one should be to check it with continuity or not?
There is also the below explanation from another forum that I cannot quite understand neither!
any help appreciated.
from another forum:
"I'll tell you my method
1. Find the input if you barely don't know which one is input.
2. Use avometer as ohmmeter to check which one is short for each pins.
3. Ohmmeter is work as current source so when you find short one then it is the pair of input pin.
4. Power up the input with series resistor.
5. Measure the output which one is short so you now know how the current flow.
6. When you power off input that output pins become open.
Your optocoupler is work.
"