Driving a 180ma relay from PIC port


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  1. #1


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    Well....I changed the DC+ from the LM317 raw input to the 5v regulated output and all is fine.

    Drawing 120ma as compared to 180.

    ??

    I didn't want to draw current through the regulator, hence my using the input side.....it should have worked that way....are you guys sure the 2N2222 can do 180ma with a pic port?

    Works fine now....another one of those "twilight zone" moments in electronics.

  2. #2


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    I could have been keeping the 317 from doing it's job and therefore affecting the 5v supply to the PIC....the transformer was only rated for 300ma.

    Probably the case.

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