[time-nuts] Parallel voltage regulators

Brooke Clarke brooke at pacific.net
Thu Oct 25 00:02:33 EDT 2007

Hi Tom:

When I had that problem a work around was to parallel a battery with the power 
supply (using a diode).  The battery supplies the extra current while the oven 
warms up.  If the power supply voltage is a little higher than the battery 
voltage when the oven is warmed up then the diode disconnects the battery.  A 
resistor shunting the diode will then set a small charging current.

Have Fun,

Brooke Clarke
http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam

Tom Clifton wrote:
> Thanks for all the good feedback! Looks like the LM388
> is the way I'm to go.  Got to toddle off to the local
> surplus shop in the morning to see what they have in
> the goodie bin. If they don't have it eBay is full of
> them.
> Tom
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