From: BobEngelhardt@comcast.net   
      
   On 8/30/2021 2:31 AM, Phil Allison wrote:   
   > bobenge...@gmail.com wrote:   
   >>   
   >>> ** Yep two:   
   >>>   
   >>> 1. The drop out voltage of a standard 12v reg IC is not 12.8 - more like   
   13.8.   
   >>> 2. The AC supply varies and may be be 10% low on occasion.   
   >>>   
   >>> So, you need a 15VAC tranny.   
   >>>   
   >>> OR you can make a "voltage doubler" supply with two diodes and two   
   electros.   
   >>>   
   >>> That will give about 33V DC - minus the same deductions.   
   >>>   
   >>   
   >> Thank you - that is helpful in 2 ways: pointing out what I missed &   
   >> was wrong about, and even more helpful is not having to correct my analysis.   
   >   
   > **   If your 12v tranny is really small, like say 100mA  -  it will output   
   about 15V to 16v  AC off load.   
   >   
   >       So would do at a pinch with a puny 10mA DC load .   
   >   
   >   
   > .......  Phil   
   >   
   >   
   >   
   >   
   >   
     Thanks again - I will take some measurements on the tranny.   
      
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