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Topic: optocoupler trouble (Read 598 times) previous topic - next topic

dataplex

hi guys

i just wired up some coils to a 2n25 optocoupler. what it's supposed to do is turn the 9v battery on/off. picture included.

im currently running the blink program to switch the coils on and off, and it works...

BUT

for some reason the coils are much weaker when getting power from the transistor, than when i connect them directly to the battery.

i'm a real novice, but eager to learn. do you have any thoughts on this? why is the optocoupler sending out such a weak current?

thank you
-------http://ulfurhansson.com/

PaulS

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why is the optocoupler sending out such a weak current?

Could have something to do with you using a wimpy current source.

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i just wired up some coils to a 2n25 optocoupler.

Coils? You want to explain that?

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