T thabit ahmada New Member Mar 28, 2004 #1 i want to design a light depended circuit together whith its power supply.i preffer to use LDR as the sensor and LED as the indicator.i need an assistance from all of you to make such a circuit.
i want to design a light depended circuit together whith its power supply.i preffer to use LDR as the sensor and LED as the indicator.i need an assistance from all of you to make such a circuit.
R Russlk New Member Mar 28, 2004 #2 How does this work? Do you lower the sensor into the vessel until the index of refraction changes?