Hi! You said:

WIL REEDER wrote:
> The circuit posted this AM or last PM with the fuse in the ground line is
> dangerous. If the fuse blows or is removed, the whole circuit beyond the
> fuse, yes, even the line marked ground, is HOT! Fuse needs to be in the
> line ahead of the diode. Be careful!

I think you're talking about this circuit:
       o---|>|-----/\/\/\/\-----*----------*----------*-------o
          Diode       R1        |          |          |
                                \          |          |
                                /          | +        |
     115V AC                 R2 \     C1 =====   C2 =====     To PIC
                                /          |          |
                                \          |          |
          Fuse        R3        |          |          |
       o----~------/\/\/\/\-----*----------*----------*-------o GND

> Where the resistors are in the order (not EXACTLY equal to) of: R1=R3=5M and
> R2=400K. So we will get a voltage drop of aprox 4.5V on R2 with an input
> voltage of 115V (full 5V with 130V input).

Could you explain where the fuse should be placed to make it safe, and
why?

Thank you,
Nuno.

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