From: dxmm@albury.nospam.net.au   
      
   On 26/04/14 06:37, Uncle Peter wrote:   
   > On Fri, 25 Apr 2014 10:57:47 +0100, Daniel    
   > wrote:   
      
      
      
   >> Now, reduce the resistance to, say, 30 ohms to try to draw more current   
   >> from the supply (from Ohm's Law I = V/R so 12V/30 gives 0.4A. Does this   
   >> happen??   
   >   
   > 18 ohms, 8.55 volts. >	>	>	>0.475Amps   
   > 27 ohms, 12.45 volts.>	>	>	>0.4611Amps   
   > 36 ohms, 12 volts.	>	>	>	>0.333Amps   
   > 47 ohms, 10.8 volts.>	>	>	>0.2298Amps   
   > 56 ohms, 10.7 volts.>	>	>	>0.191Amps   
   > Open circuit, 12.73 volts.>	>	>0.000Amps   
      
   Not very "Constant Current"ish!! Mind you, not very "Constant Voltage",   
   either!!   
      
   I'd just guess a poorly regulated Voltage, Power Supply.   
      
   Daniel   
      
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