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Jeanie said:I have set up a simple LDR ciruit with LDR, LED; 1K resistor and 12K resistor in series and a transistor E to battery, C to LED and base to 1 resistor and when LDr exposed to ligh LED is on. When exposed to dark LED goes off
HEEEEEEEEEEELLLLLLLLLLLLLLLPPPPPPPPP![]()
Jeanie said:Hero,
I want some 15 year olds to set up a circuit using a 1K resistor, a 12 K resistor, a transistor, an LED and LDR. When exposed to dark the LED should light I did it once before so why is it working the opposite way now.Can you give a diagnosis.
They dont believe me now!!![]()
hi,Jeanie said:Tried to copy and paste my circuit diagram it just will not paste I dont want to add my lack of computer knowledge as well. Apparently i read the circuit wrong. i let out a variable resistor. I will try again tommorow and report to you guys thanks for all the replies and all the telling offs!