Wednesday, March 23, 2011

Uses of Optoisolators

Consist of an LED (usually Infra-red) and a phototransistor close-coupled in a DIL IC package. Commonly used to isolate two sections of a circuit for safety reasons.

An example where you want to swap your case power or drive activity LED for something with a bit more bling, without endangering the motherboard. The optoisolator diode is connected in place of the case LED.




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