On Mon, 1 Jun 1998 23:52:55 -0300, Lewis H. Cobb wrote:

>Dennis - I'm going to have to hang onto your e-mail address - you might
>save my arse on a few occassions as I move forward with this little design
>- haha.  Thanks very much again for the tips.  Looks like I might be ok on
>this one - The micro I probably will use will be the '620 in most cases and
>it's spec'd down to 3 volts - no biggy problems here - by the time the user
>will be inserting the second battery , the little bugger will have powered
>up, initialized and then gone to sleep again - when the second battery
>comes "on-line" and the Vdd jumps to 6V - nothing will (should) happen -
>the only way to get the micro up and going is to press the button on the
>front panel.

When the second battery is inserted, isn't the series circuit momentarily
interrupted, droppind VDD to 0 again while the contact with the first
battery is lost?

Could a larger byspass cap or memory cap hold enough charge during this
time to keep the PIC powered?

How about a different battery holder?

Dan