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[aprssig] info for TM-D710E in car

Rick Green rtg at aapsc.com
Wed Jan 23 20:09:18 UTC 2008

On Wed, 23 Jan 2008, Curt, WE7U wrote:

> The solenoid would have a delayed kick-in for the period when
> starting the engine.  Have it kick in after stable charge voltage is
> achieved.   Both batteries would get the full charge voltage that
> way, no diode drop.
   It looks like you've just written the design spec for the APO4!  Two 
relays, one with a zero timeout, and one with the selectable timeout. Use 
the same PIC and voltage sense circuitry to drive both logic loops.

Rick Green

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."
                                   -Benjamin Franklin

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