From: look165@numericable.fr   
      
   Why not a 7803 with just a filtering cap ?   
      
   In your need, you would need 2*1N4148 or 1N4448, that's enough.   
      
   Andy a écrit le 15/02/2019 à 15:32 :   
   > On Tuesday, January 15, 2019 at 2:26:15 PM UTC-6, David Snowdon wrote:   
   >> How about the 18650 in series with a Si diode, such as   
   >> a 1N4001 ?  The 0.6V drop should reduce the voltage   
   >> sufficient to be considered safe.   
   >>   
   >> David   
   >>   
   >> ---   
   >> Andy wrote:   
   >>> I have a door bell that uses 2 aa batteries.   
   >>>   
   >>> Would a 18650 work in such an application.   
   >>>   
   >>> I don't know if 4.1 volts would be too high.   
   >>>   
   >>> Thanks,   
   >>>           Andy   
   >> ---   
   >> This email has been checked for viruses by Avast antivirus software.   
   >> https://www.avast.com/antivirus   
   > How would I wire that up?   
   >   
   > It's been a while.   
   >   
   > Andy   
      
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