Hey there.
Chuckle, yeah i designed the circuit just as an experimentation with comparators as i'm nearly finished my 1st year in electronic engineering. There is no resistor because i needed it for the led's which i should have specified as being 2 green and 1 blue, all superbright's. I left the resistor out because i believed the current would be safe enough to light the leds to a sufficient level.
What controls the current in the LED's
20ma for the green and around 13ma for the blue and no resistor also because i needed around a 3-4v drop for the blue led.
Whats the forward voltage drop for the other LED's
It does work, just needs tweaking.
You can only use the technical word 'tweaking' after you have graduated.!:
I did wonder if it was the lm358 current.
What does this statement mean,?
I'll look into the positive feedback also.
Cheers.