XPost: sci.electronics.design   
   From: spam@me.com   
      
   jlarkin@highlandsniptechnology.com wrote:   
      
   > On Sun, 8 Nov 2020 21:08:18 -0000 (UTC), "Don"  wrote:   
   >   
   >>This project shows how to build a 1.5 VDC pseudocell to take the place   
   >>of an AA sized battery. The mechanical aspect of this project offers   
   the   
   >>greatest challenge. The electronic portion utilizes an easy to use   
   LM317   
   >>adjustable voltage regulator to convert a 5 VDC source to 1.5 VDC.   
   >>   
   >>(excerpt)   
   >>   
   >>https://crcomp.net/pseudocell/index.php   
   >>   
   >>(Thank you In Advance to readers who alert me to typos and whatnot.)   
   >>   
   >>Danke,   
   >   
   > Why not hang a D-cell on the other side of the wall? That would give   
   > you battery backup   
      
   The clock will drift and pretty soon be useless. He needs WWVB to keep   
   time. The batteries can last up to 3 years. See my pervious post.   
      
      
      
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