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by grahamg
Fri Oct 21, 2005 12:35 am
Forum: General Discussion
Topic: 12v on Pic input
Replies: 24
Views: 6503

Re: 12v on Pic input

Hello Matt,<p>Application note AN521 from Microchip titled "Interfacing to AC power lines" states that you only need to limit the input current to the pic's input as the input protection diodes in the chip will keep the input voltage within correct limits. Any resistor between the value of 100K - 27...