I'm a noob here and just starting to experiment with simple DC circuits and leds.
I would like to construct a night light that runs a single white led using a photocell. I know that the voltage will need to be more than 3V so I will need to use 3 X 1.5V cells. If the light is not sufficient, I may add more leds and of course adjust the voltage and resistance as required.
I have a couple of photocells with resistances of about 800 ohms in full light to 2K in full dark.
There's many designs on the net and none of them was really what I was looking for. I am also looking for a long battery life. (duh!)
Would someone be so kind as to direct me to a schematic that would suit my needs? Or draw one up for me? Perhaps with a pot so I can adjust the sensitivity?
Many thanks in advance!
Mike
I would like to construct a night light that runs a single white led using a photocell. I know that the voltage will need to be more than 3V so I will need to use 3 X 1.5V cells. If the light is not sufficient, I may add more leds and of course adjust the voltage and resistance as required.
I have a couple of photocells with resistances of about 800 ohms in full light to 2K in full dark.
There's many designs on the net and none of them was really what I was looking for. I am also looking for a long battery life. (duh!)
Would someone be so kind as to direct me to a schematic that would suit my needs? Or draw one up for me? Perhaps with a pot so I can adjust the sensitivity?
Many thanks in advance!
Mike