From: tony.sunnysky@gmail.com   
      
   On Saturday, 30 June 2018 22:28:54 UTC-4, m-m  wrote:   
   > Good starting point.  Thanks.   
   >   
   >   
   >   
   > In article ,   
   >  wrote:   
   >   
   > > On Fri, 29 Jun 2018 00:13:06 -0400, m-m  wrote:   
   > >   
   > > >I have a 4V, 0.75A, 3W power adapter (120V input) that powers a single   
   > > >LED that is too bright.   
   > > >   
   > > >Is there a way to make or purchase a dimmer that could work on the low   
   > > >power side?   
   > > >   
   > > >Thanks   
   > >   
   > > A resistor should work until you reach the point that the LED goes   
   > > out.   
   > > Without knowing the specs on the LED or the current it is running at I   
   > > am not sure where to start with the resistor but I would shove 10 ohms   
   > > in there and see what happens. Then work up or down from there.   
   >   
   > --   
   > m-m   
   > www.mhmyers.com   
      
   If the starting point is 4V 0.75A the ending point may be around half this   
   brightness or 3V @0.38A therefore the 1V drop @ 0.38A is around 2.6 Ohms 1/2W   
      
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