how to make ldr do high power work(12v motor) without becoming hot? Answered
my ldr works fine in controlling 1.5 & 5v motor but connecting in series but when i switch to 9v and 12v motor it becomes hot
maybe i can decrease its heat by adding resistor parallel to ldr so motor will get required current and ldr wont have to suffer all current
or maybe i have also changed power source in second case to a 12v and 3amp
i thought i am not ta\ing 3 amp current according to I=V/R but P=VI so if current decrese my power source's voltage .