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OptoCoupler pc817

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hawking1122

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How to calculate values of resistors for diode and transistor?

Can you guys explain how to choose values of diode and transistor resistors (I mean the calculating process, where can I get parameters, what are parameters?) ?
 

ericgibbs

Well-Known Member
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Can you guys explain how to choose values of diode and transistor resistors (I mean the calculating process, where can I get parameters, what are parameters?) ?
hi,
The parameters are the specified values for voltage, current operating speed etc.
These are different for each type of opto-coupler, so it means you should get the opto's datasheet to be sure.
Lots of d/s are at Datasheet & Application Note Database, PDF, Circuits, Datasheets | Datasheet Archive
 
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