Using this circuit allow driving a bicolor LED that changes color light depending on the supply voltage. When voltage control circuit input range from 0 V to +12 V LED lights green at first and then pass gradually through orange and yellow to red.
The two sections of the bicolor LED (red and green) are ordered separately: the green IC1a by R7 and R8 red one with IC1b through.
The two sections of the bicolor LED (red and green) are ordered separately: the green IC1a by R7 and R8 red one with IC1b through.
