hi, whats the easiest way to power a 9v circuit from a 12v supply? or any other sub 12v circiut be it 2v, 3v etc
can it be powered with a voltage divider circuit, would that take into account fluctuations in the 9v circuit? or would i have to use a voltage divider consisting of a resistor and zener diode. or does it always have to be a voltage regulator?