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Problem with 5V regulated power supply + buffer

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ahydra said:
What do you mean by "bypassed" - connect the 0.1uF caps between the +V and 0V lines of the PIC and the display?
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Exactly. Put one close to the PIC, one close to the output of the 7805, and another close to the display.
Where does the bigger cap go?
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If you are using the 7805 then on the input of that. If just 3AAs, then where the 4.5V power wires enter the board.
 
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