Thank you for reading this
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I a wondering about protection for the PIC port if I am using a Dallas iButton device. I have seen circuits using a 33R resistor in series and a FR107 Fast recover diode across the probe. And another up to the supply rail.
My question is why the use (specific) of a fast recovery diode Will a ordinary or even a Schottky diode be the same ..Is there a reason ?
Sorry if posted in wrong place.
I a wondering about protection for the PIC port if I am using a Dallas iButton device. I have seen circuits using a 33R resistor in series and a FR107 Fast recover diode across the probe. And another up to the supply rail.
My question is why the use (specific) of a fast recovery diode Will a ordinary or even a Schottky diode be the same ..Is there a reason ?
Sorry if posted in wrong place.