From: dxmm@albury.nospam.net.au   
      
   On 16/04/14 06:11, Uncle Peter wrote:   
   > How easy would it be for me to change the current rating of a constant   
   > current supply?  One from a CREE LED light fitting, which I think is   
   > very roughly 0.5 amps at 7V.  I want to lower the current, the voltage   
   > is ok.   
   >   
   My memory of teaching Power Supplies (about 15 years ago), the constant   
   current was maintained but keeping the voltage developed across a   
   particular resistor constant, so, in theory, by increasing the value of   
   the resistor, a lower current would develop the same voltage across the   
   sensing resistor.   
      
   However, you would have to determine which resistor and which value .....!   
      
   Daniel   
      
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