On 04/07/2016 2:25 PM, geneb wrote:
  On Thu, 7 Apr 2016, Bill Sudbrink wrote:
  Maybe I'm overthinking this.  If I just put
 regulated +5 on the 7805 VIN will it work?
 
 Isn't the minimum input voltage for a 7805, 6vdc?
 g.
 
More like 7VDC input minimum (dropout voltage) for 7805 - there are data
sheets you know (comment directed at Original Poster).
If the OP wants to put 5VDC in, why not cut out the 7805?
John :-#)#
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