From: rob@despammer.com   
      
   On 12/02/2020 11:28, tabbypurr@gmail.com wrote:   
   > On Wednesday, 12 February 2020 10:29:32 UTC, RobH  wrote:   
   >   
   >> I could not measure the resistance of the ldr correctly as it was either   
   >> off scale on the meter, or a negative resistance, depending on which way   
   >> round I had the positive and common leads on it.   
   >>   
   >> The Vc of the resistor voltage in the dark is 4.8v   
   >> The Vc of the resistor voltage in the light is 6.8v   
   >>   
   >>   
   >> Apologies for any confusion I may have  caused.   
   >   
   > If you're measuring an LDR as negative resistance, something is seriously   
   wrong with what you're doing.   
   >   
      
   Fair enough, and I may just give up with it then.   
      
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